Document:

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                                                                   EXHIBIT 10.06

                         CHAIN LINK TECHNOLOGIES, INC.

                         SECURITIES PURCHASE AGREEMENT

                              As of June 11, 1999
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                         SECURITIES PURCHASE AGREEMENT

  SECURITIES PURCHASE AGREEMENT made as of this 11th day of June, 1999, by and
among Chain Link Technologies, Inc., a Delaware corporation (together with any
predecessors or successors thereto as the context requires, the "Company"), Raj
Jain, Ram Duraiswamy and Nicholas Fergis, (each individually a "Founder," and
collectively the "Founders"), and the investment partnerships and other
investors named in Exhibit A attached hereto (collectively the "Investors," and
                   ---------
each individually an "Investor").

  WHEREAS, the Company has duly authorized for issuance to the Investors an
aggregate of 1,391,212 shares of Convertible Participating Preferred Stock,
$0.001 par value per share ("Convertible Preferred Stock"); 1,391,212 shares of
6% Redeemable Preferred Stock, par value $0.001 per share ("Redeemable Preferred
Stock") and a warrant to purchase 412,917 shares of Common Stock of the Company,
par value $0.001 per share (the "Common Stock");

  WHEREAS, each of the Investors desires to purchase, and the Company desires to
sell, the respective number of shares of Convertible Preferred Stock and
Redeemable Preferred Stock as set forth on Exhibit A attached hereto,
                                           ---------
representing an aggregate purchase and sale of 1,391,212 shares of Convertible
Preferred Stock; 1,391,212 shares of Redeemable Preferred Stock and the Warrant;

  WHEREAS, each of the Investors desires to purchase, and the Founders listed on
Exhibit A hereto desire to sell, an aggregate of 602,858 shares of Common Stock
---------
held by such Founders;

  WHEREAS, the parties hereto desire to set forth herein the terms of their
ongoing relationship in connection with the Company;

  NOW THEREFORE, in consideration of the foregoing and the mutual covenants and
agreements hereinafter set forth, the parties hereto agree as follows:

SECTION 1.  PURCHASE AND SALE
            -----------------

  1.1     Description of Securities. The Company's authorized capital stock
          -------------------------
 consists of Common Stock, Convertible Preferred Stock and Redeemable Preferred
Stock. The Common Stock, Convertible Preferred Stock and Redeemable Preferred
Stock have the rights, preferences and other terms set forth in the Amended and
Restated Certificate of Incorporation of the Company (the "Amended Certificate")
set forth on Exhibit B attached hereto. For purposes of this Agreement, the
             ---------
shares of Convertible Preferred Stock to be acquired by the Investors from the
Company hereunder are referred to as the "Convertible Preferred Shares," the
shares of Redeemable Preferred Stock to be acquired by the Investors from the
Company are referred to herein as the "Redeemable Preferred Shares," the shares
of Common Stock to be acquired by the Investors from the Founders are referred
to as the "Common Shares," the shares of Common Stock issuable upon conversion
of the Convertible Preferred Shares are referred to as the "Conversion Shares,"
the shares of Common Stock issuable upon exercise of the Warrant are referred to
as the "Warrant Shares," and the Convertible Preferred Shares, the Redeemable
Preferred Shares, the Common Shares, the Conversion Shares, the Warrant and the
Warrant Shares are sometimes referred to herein as the "Securities."
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  1.2     Sale and Purchase.  Upon the terms and subject to the conditions
          -----------------
contained herein, and in reliance upon the representations and warranties set
forth in Sections 2 and 3 hereof, at the Closing (a) each Investor is hereby
purchasing from the Company, and the Company is hereby issuing, selling,
transferring and delivering to the Investors, the number of shares of
Convertible Preferred Stock set forth opposite the name of such Investor on
Exhibit A attached hereto, at a purchase price equal to $1.2220 per share; (b)
---------
each Investor is hereby purchasing from the Company, and the Company is hereby
issuing, selling, transferring and delivering to the Investors, the number of
shares of Redeemable Preferred Stock set forth opposite the name of such
Investor on Exhibit A attached hereto, at a purchase price equal to $3.0908 per
            ---------
share; (c) each Investor is hereby purchasing from the Founders listed on
Exhibit A attached hereto, and each such Founder is hereby selling, transferring
---------
and delivering to the Investors, the number of Common Shares set forth on
Exhibit A at a purchase price of $4.3128 per share, which sale, transfer and
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delivery by the Founders and purchase by the Investors shall occur immediately
prior to the other transactions described in this Section 1.2; and (d) each
Investor is hereby purchasing from the Company, and the Company is hereby
issuing, selling, transferring and delivering to the Investors, the Warrant, and
each of the Company and the Founders hereby grant the Investors the rights set
forth herein and in the various agreements executed and delivered concurrently
herewith.

  1.3     Closing.  The closing of the purchase and sale of the Convertible
          -------
Preferred Shares, the Redeemable Preferred Shares, the Warrant and the Common
Shares as contemplated by Section 1.2 (the "Closing") shall take place at the
offices of Brobeck, Phleger & Harrison LLP, at Two Embarcadero Place, Two
Embarcadero Place, 2200 Geng Road, Palo Alto, California at 10:00 a.m.  on June
11, 1999 (the "Closing Date") or at such other time and place as the Company and
the Investors shall mutually agree.

SECTION 2.  REPRESENTATIONS AND WARRANTIES OF THE COMPANY AND THE FOUNDERS
            --------------------------------------------------------------

  In order to induce the Investors to enter into this Agreement, the Company and
each of the Founders, jointly and severally, make the following representations
and warranties to each of the Investors.

  2.1     Organization and Corporate Power.  The Company is a corporation duly
          --------------------------------
organized, validly existing and in good standing under the laws of the State of
Delaware and is qualified to do business as a foreign corporation in each
jurisdiction in which the failure to be so qualified would have a material
adverse effect on the assets, liabilities, condition (financial or other),
business, results of operations or prospects of the Company (a "Material Adverse
Effect").  The Company has all requisite corporate power and authority to own or
lease its properties, to carry on its business as presently conducted, to enter
into and perform this Agreement and the agreements contemplated hereby and to
carry out the transactions contemplated hereby and thereby, including the
issuance of the Securities.  The copies of the Certificate of Incorporation and
Bylaws of the Company, as amended to date and certified by the Secretary of
State of the State of Delaware and the Secretary of the Company, respectively
(the "Certificate of Incorporation" and the "Bylaws," respectively), which have
been furnished to the Investors by the Company, are correct and complete at the
date hereof and no amendments

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thereto are pending. The Company is not in violation of any term of its
Certificate of Incorporation or Bylaws.

  2.2     Authorization and Non-Contravention.  The Company has full right,
          -----------------------------------
authority and corporate power to enter into this Agreement and each agreement,
document and instrument to be executed and delivered by or on behalf of it
pursuant to or as contemplated by this Agreement and to carry out the
transactions contemplated hereby and thereby.  The execution, delivery and
performance by the Company of this Agreement and all other agreements, documents
and instruments to be executed and delivered by the Company as contemplated
hereby, and the issuance and delivery of (i) the Convertible Preferred Shares,
(ii) the Conversion Shares, upon conversion of the Convertible Preferred Shares,
(iii) the Warrant, (iv) the Warrant Shares, upon exercise of the Warrant and (v)
the Redeemable Preferred Shares have been duly authorized by all necessary
corporate and other action of the Company.  This Agreement and all documents
executed by the Company pursuant hereto are valid and binding obligations of the
Company enforceable in accordance with their terms.  The execution, delivery and
performance by the Company of this Agreement and all other agreements, documents
and instruments to be executed and delivered by the Company as contemplated
hereby and the issuance and delivery by the Company of (i) the Convertible
Preferred Shares, (ii) the Conversion Shares, upon conversion of the Convertible
Preferred Shares, (iii) the Warrant, (iv) the Warrant Shares, upon exercise of
the Warrant and (v) the Redeemable Preferred Shares, do not and will not, except
as set forth in Schedule 2.2: (A) violate, conflict with or result in a default
(whether after the giving of notice, lapse of time or both) or loss of benefit
under any material contract or obligation to which the Company is a party or by
which any of its assets are bound, or any provision of the Certificate of
Incorporation or Bylaws of the Company; (B) violate or result in a violation of,
or constitute a default under, any provision of any law, regulation or rule, or
any order of, or any restriction imposed by, any court or governmental agency
applicable to the Company; (C) require from the Company any notice to,
declaration or filing with, or consent or approval of any governmental authority
or third party; or (D) accelerate any obligation under or give rise to a right
of termination of or result in a loss of a material benefit under any indenture
or loan or credit agreement or any other material agreement, contract,
instrument, mortgage, lien, lease, permit, authorization, order, writ, judgment,
injunction, decree, determination or arbitration award to which the Company is a
party or by which the property of the Company is bound or affected, or result in
the creation or imposition of any mortgage, pledge, lien, security interest or
other charge or encumbrance on any of the assets or properties of the Company.

  2.3     Capitalization.  Immediately prior to the Closing, the authorized
          --------------
capital stock of the Company consists of 22,217,576 shares of Common Stock, of
which 12,095,826 shares are issued and outstanding, 1,391,212 shares of
Convertible Preferred Stock, none of which are issued and outstanding and up to
all of which may be purchased under this Agreement, and 1,391,212 shares of
Redeemable Preferred Stock, none of which are issued and outstanding and up to
all of which may be purchased under this Agreement.  The Company has authorized
and reserved 1,391,212 shares of Common Stock for issuance upon conversion of
the Convertible Preferred Shares and 412,917 shares of Common Stock for issuance
upon exercise of the Warrant.  The Company has reserved for issuance upon
exercise of options or grants of stock awards under the Company's 1997 Equity
Incentive Plan or other stock option plan (the "Option Plan") 2,680,253 shares
of Common Stock.  Options for the purchase of 1,584,425 shares of Common Stock
are currently outstanding.  Except as described in the previous sentence and

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except for the Convertible Preferred Shares and the Warrant, and except as set
forth on Schedule 2.3, the Company has not issued or agreed to issue, and is not
         ------------
obligated to issue any warrants, options or other rights to purchase or acquire
any shares of its capital stock, nor any securities convertible into such shares
or any warrants, options or other rights to acquire any such convertible
securities, nor to accelerate the vesting of any of the foregoing, and none of
the options or rights described in Schedule 2.3, if any, is subject to
                                   ------------
accelerated vesting by reason of the transactions contemplated hereby or any
subsequent securities issuance by the Company.  As of the Closing, and after
giving effect to the transactions contemplated hereby, all of the outstanding
shares of capital stock of the Company have been duly and validly authorized and
issued and are fully paid and nonassessable and have been offered, issued, sold
and delivered in compliance with applicable federal and state securities laws
and not subject to any preemptive rights.  The Company has not redeemed any
capital stock or securities from any shareholder or former shareholder or
otherwise repurchased the interest of any equity holder in the Company.  The
Conversion Shares issuable upon conversion of the Convertible Preferred Shares
and the Warrant Shares issuable upon the exercise of the Warrant will, upon
issuance, be duly and validly authorized and issued, fully paid and
nonassessable and not subject to any preemptive rights and will be issued in
compliance with federal and state securities laws.  The relative rights,
preferences and other provisions relating to the shares of Convertible Preferred
Stock, Redeemable Preferred Stock and Common Stock are as set forth in the
Amended Certificate attached as Exhibit B hereto.  There are no preemptive
                                ---------
rights, rights of first refusal, put or call rights or obligations or anti-
dilution rights with respect to the issuance or sale of the Company's capital
stock, other than as described in Schedule 2.3 hereto and rights to which the
                                  ------------
Investors and the Founder are entitled as set forth in this Agreement and the
Amended Certificate.  Except as set forth herein, there are no rights to have
the Company's capital stock registered for sale to the public under the laws of
any jurisdiction, no agreements relating to the voting of the Company's voting
securities, and no restrictions on the transfer of the Company's capital stock
(except for such restrictions that may exist under applicable federal and state
securities laws).  After giving effect to the transactions contemplated hereby,
the outstanding shares of the Company's capital stock will be held beneficially
and of record by the persons identified in Schedule 2.3 in the amounts indicated
                                           ------------
thereon, free and clear of all liens and encumbrances.

  2.4     Subsidiaries; Investments.  The Company has no subsidiaries and does
          -------------------------
not own any securities or interests issued by any other business organization or
governmental authority or any direct or indirect interest in or control over any
corporation, joint venture, partnership, limited liability company or other
entity.

  2.5     Financial Statements and Matters.
          --------------------------------

          (a) The Company has previously furnished to the Investors copies of
its unaudited financial statements for the fiscal years ended December 31, 1998,
1997 and 1996 together with copies of its unaudited financial statements for the
three-month period ended March 31, 1999 (collectively, the "Financial
Statements"). The Financial Statements were prepared in conformity with
generally accepted accounting principles applied on a consistent basis, are
complete, correct and consistent in all material respects with the books and
records of such Company, fairly and accurately present the financial position of
such Company as of the dates thereof and the results of operations and cash
flows of such Company for the periods

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shown therein (subject to the absence of footnotes and normal year-end
adjustments in the case of the unaudited statements) and are attached hereto at
Schedule 2.5.

          (b) The projections which have been separately prepared and disclosed
in writing to the Investors represent good faith estimates of the performance of
the Company for 1999 and future years based upon assumptions which are set forth
therein and which were in good faith believed to be reasonable when made and
continue to be reasonable as of the date of this Agreement; provided, however,
                                                            --------  -------
that such projections do not constitute a commitment, guarantee or assurance of
the future performance of the Company.

  2.6     Absence of Undisclosed Liabilities.  Except as and to the extent
          ----------------------------------
reflected or reserved against in the unaudited balance sheet of the Company at
March 31, 1999 contained in the financial statements referred to in Section
2.5(a), (the "Base Balance Sheet") or as set forth in Schedule 2.6 attached
                                                      ------------
hereto, the Company does not have and is not subject to any liability or
obligation of any nature, whether accrued, absolute, contingent or otherwise,
other than those incurred in the ordinary course of business subsequent to March
31, 1999, other than any such liability or obligation which would not have a
Material Adverse Effect.

  2.7     Absence of Certain Developments.  Since December 31, 1998, except as
          -------------------------------
set forth in Schedule 2.7 attached hereto, the Company has conducted itself in
             ------------
the ordinary course of business and there has not been any: (i) material adverse
change in the financial condition of the Company or in the assets, liabilities,
condition (financial or other), business, results of operations or prospects of
the Company, (ii) declaration, setting aside or payment of any dividend or other
distribution with respect to, or any direct or indirect redemption, purchase or
acquisition of, any of the capital stock of the Company, or any issuance or sale
by the Company of any shares of its capital stock, including, without
limitation, any cash dividend or in kind distribution of accounts receivable,
inventory or other assets of the Company, (iii) waiver or release of any
valuable right of the Company or cancellation or discharge of any valuable debt
or claim held by the Company, including any writedown, write-off or other
compromise of any material accounts receivable, (iv) loss, destruction or damage
to any property which is material to the assets, liabilities, condition
(financial or other), properties, business, results of operations or prospects
of the Company, whether or not insured, (v) acquisition or disposition of any
material assets or other transaction by the Company other than in the ordinary
course of business, (vi) transaction or agreement involving the Company and any
officer, director, employee or shareholder of the Company, or any loans to any
of the foregoing, (vii) increase, direct or indirect, or other change in the
compensation paid or payable to any officer, director, employee or agent of the
Company or any establishment or creation of any employment, deferred
compensation or severance agreement or employee benefit plan with respect to
such persons or the amendment to any of the foregoing, (viii) material loss of
personnel of the Company, material change in the terms and conditions of the
employment of the Company's key personnel or any labor trouble involving the
Company, (ix) arrangements relating to any royalty, dividend or similar payment
based on the sales volume of the Company, whether as part of the terms of the
Company's capital stock or by any separate agreement, (x) agreement with respect
to the endorsement of the Company's products, (xi) any (A) change in the
Company's general collection policies, credit practices or payment policies, (B)
material change in the Company's collection or payment policies with respect to
any material customers, (C) pricing arrangements or other sales arrangements
which are not in the ordinary course of business and consistent with past
practices, or (D) recognition of

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revenues or deferral of expenses in a manner inconsistent with past practices,
(xii) loss or any development that could result in a loss of any significant
customer, account or employee of the Company, (xiii) incurrence of indebtedness,
other than in the ordinary course of business, or the mortgage, encumbrance or
placement of any lien on any properties or assets used in the business of the
Company, (xiv) transaction or agreement involving fixed price terms or fixed
volume arrangements, (xv) transaction not occurring in the ordinary course of
business, (xvi) change in accounting methods or practices, collection policies,
pricing policies or payment policies, (xvii) revaluation by the Company of any
of its material assets, (xviii) amendment or termination of any material
contract, agreement or license to which the Company is a party or by which
either is bound, (xix) amendment to the Company's Certificate of Incorporation
or Bylaws, or (xx) any agreement with respect to any of the foregoing actions.

  2.8     Accounts Receivable; Accounts Payable; Inventories.
          --------------------------------------------------

          (a) All of the accounts receivable of the Company are reflected on the
Base Balance Sheet in accordance with generally accepted accounting principles
and represent bona fide completed sales made in the ordinary course of business,
are valid claims and, to the Company's and the Founders' best knowledge, are not
subject to any set offs or counterclaims and, except as set forth in Schedule
2.8(al, are fully collectible in the normal course of business after deducting
the reserve set forth in the Base Balance Sheet. Since the date of the Base
Balance Sheet, the Company has collected its accounts receivable in the ordinary
course and in a manner which is consistent with its prior practices and has not
accelerated any such collection. Except as set forth in Schedule 2.8(a), the
                                                        ---------------
Company has no accounts receivable or loans receivable from any person, firm or
corporation which is an affiliate of the Company or any Founder or from any
director, officer or employee of the Company or any affiliate thereof.

          (b) All of the accounts payable and notes payable of the Company arose
in bona fide arms' length transactions in the ordinary course of business, and
no such account payable or note payable is delinquent by more than sixty (60)
days in its payment. Since the date of the Base Balance Sheet, the Company has
paid its accounts payable in the ordinary course and in a manner which is
consistent with its prior practices. Except as set forth in Schedule 2.8(b), as
                                                            ---------------
of the date hereof, the Company has no accounts payable to any person, firm or
corporation which is an affiliate of the Company or to any director, officer or
employee of the Company or any affiliate thereof.

          (c) Except as disclosed in Schedule 2.8(c), all of the Company's
                                     ---------------
inventory items are of a quality and quantity salable in the ordinary course of
its business at profit margins consistent with the Company's experience in prior
years. All inventory items shown on Schedule 2.8(c) reflect write-downs to
                                    ---------------
realizable values in the case of items which have become obsolete or unsalable
(except at prices less than cost) through regular distribution channels in the
ordinary course of the business of the Company.  The values of the inventories
stated in the Base Balance Sheet reflect the normal inventory valuation policies
of the Company and were determined in accordance with generally accepted
accounting principles, practices and methods consistently applied.  Since
December 31, 1998, no inventory items have been sold or disposed of except
through sales in the ordinary course of business at profit margins consistent
with the Company's experience in prior years, and all sales commitments made for
the Company's

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products are at prices not less than inventory values plus selling expenses and
said profit margins.

  2.9     Properties.
          ----------

          (a) Real Property. The Company owns no real property. All of the real
              -------------
property leased by the Company as tenant or lessee is identified on Schedule
                                                                    --------
2.9(a) (collectively referred to herein as the "Leased Real Property").  The
------
Company hereby makes the following representations and warranties with respect
to the Leased Real Property:

              (i) Leases.  The copies of the leases of the Leased Real Property
                  ------
  (collectively, the "Leases") delivered by the Company to the Investors and the
  information with respect to each of the Leases set forth in Schedule 2.9(a)
                                                              ---------------
  is complete, accurate, true and correct. With respect to each of the Leases,
  except as set forth on Schedule 2.9(a):
                         ---------------

                  (A) each of the Leases is in full force and effect and has not
          been modified, amended, or altered, in writing or otherwise;

                  (B) all obligations of the landlord or lessor under the Leases
          which have accrued have been performed, and to the best of the
          knowledge of the Company, no landlord or lessor is in default under
          any Lease;

                  (C) all obligations of the tenant or lessee under the Leases
          which have accrued have been performed, and the Company is not in
          default under any Lease, and no circumstance presently exists which,
          with notice or the passage of time, or both, would give rise to a
          material default by the Company; and

                  (D) the Company has obtained or will obtain prior to the
          Closing the consent of each landlord or lessor under any Leases whose
          consent is required to consummate the transactions contemplated
          hereby, and such transactions will not give any landlord or lessor
          under any Lease any remedy, including, without limitation, any right
          to declare a default under any Lease.

              (ii) Title and Description.  The Company holds a valid and
                   ---------------------
  enforceable leasehold interest in the Leased Real Property pursuant to the
  Leases, subject only to the right of reversion of the landlord or lessor under
  the Leases, free and clear of all other prior or subordinate interests,
  including, without limitation, mortgages, deeds of trust, ground leases,
  leases, subleases, assessments, tenancies, claims, covenants, conditions,
  restrictions, easements, judgments or other encumbrances or matters affecting
  title, and free of encroachments onto or off of the Leased Real Property,
  except for (x) easements, covenants, restrictions and similar encumbrances
  that do not and could not materially interfere with the use of the Leased Real
  Property as currently used and improved, and (y) minor encroachments that do
  not and could not materially adversely affect the value or use of the Leased
  Real Property as currently used and improved and that could be removed without
  material cost ((x) and (y) are collectively referred to as "Permitted
  Encumbrances"), and except for matters set forth on Schedule 2.9(a).
                                                      ---------------

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          (b) Personal Property. Except as disclosed in the Base Balance Sheet,
              -----------------
the Company has good and marketable title to all of its personal property.
Except as set forth in Schedule 2.9(b), none of such personal property or assets
is subject to any mortgage, pledge, lien, conditional sale agreement, security
agreement, encumbrance or other charge except as specifically disclosed in the
Base Balance Sheet. The Base Balance Sheet reflects all material personal
property of the Company, and such properties are sufficient for the Company to
continue the business of the Company as currently conducted by the Company. All
leasehold improvements, furnishings, machinery and equipment of the Company are
in good repair, have been well maintained, and substantially comply with all
applicable laws, ordinances and regulations, and such machinery and equipment is
in good working order.

  2.10    Tax Matters.  The Company has timely filed all federal, state, local
          -----------
and foreign income, excise and franchise tax returns, real estate and personal
property tax returns, sales and use tax returns and other tax returns required
to be filed by the Company and has paid all Taxes (as hereinafter defined)
required to be paid by it through the date hereof whether disputed or not,
except Taxes which have not yet accrued or otherwise become due, for which
adequate provision has been made in the pertinent financial statements referred
to in Section 2.5 above.  The provision for Taxes on the Base Balance Sheet is
sufficient as of its date for the payment of all accrued and unpaid federal,
state, county and local Taxes of any nature of the Company as of the date of the
Base Balance Sheet, and any applicable Taxes owing to any foreign jurisdiction,
whether or not assessed or disputed.  All Taxes and other assessments and levies
which the Company was or is required to withhold or collect have been withheld
and collected and have been, or will be, timely paid over to the proper
governmental authorities.  Except as set forth in Schedule 2.10, the Company has
                                                  -------------
not received notice of any audit or of any proposed deficiencies from the
Internal Revenue Service or any other taxing authority (other than routine
audits undertaken in the ordinary course and which have been resolved on or
prior to the date hereof).  There are in effect no waivers of applicable
statutes of limitations with respect to any Taxes owed by the Company for any
year.  Neither the Internal Revenue Service nor any other taxing authority is
now asserting or, to the best knowledge of the Company, threatening to assert
against the Company any deficiency or claim for additional Taxes or interest
thereon or penalties in connection therewith.  Except as set forth on Schedule
                                                                      --------
2.10, the Company has never been a member of an affiliated group of corporations
----
filing a combined federal income tax return and does not have any liability for
Taxes of any other person under Treasury Regulations (S) 1.1502.6 (or any
similar provision of foreign, state or local law) or otherwise.  The Company is
not a party to any tax allocation or sharing arrangement.

  As of the Closing (i) the Company will be a domestic C Corporation, (ii) the
Company will not have, during the one-year period preceding the Closing, made
any purchases of its own stock, (iii) the Company's (and any predecessor's)
aggregate gross assets, as defined by Section 1202(d)(2) of the Code, at no time
between the date of incorporation of the Company and through the Closing have
exceeded $50,000,000, taking into account the assets of any corporations
required to be aggregated with the Company in accordance with Section 1202(d)(3)
of the Code and (iv) the Company will be an eligible corporation, as defined by
Section 1202(e)(4) of the Code.

  As used herein, the term "Taxes" shall mean any federal, state, local,
foreign or other taxes, including without limitation income taxes, estimated
taxes, excise taxes, sales taxes, goods

                                       8
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and services taxes, use taxes, gross receipts taxes, franchise taxes, employment
and payroll related taxes, withholding taxes, stamp taxes, transfer taxes and
property taxes, whether or not measured in whole or in part by net income.

  2.11    Certain Contracts and Arrangements.  Except as set forth on Schedule
          ----------------------------------                          --------
2.11 attached hereto (with true and correct copies heretofore delivered to the
-----
Investors) or as otherwise expressly contemplated hereby, the Company is not a
party to or subject to or bound by:

          (a) any plan or contract providing for collective bargaining or the
like, or any contract or agreement with any labor union;

          (b) any contract, lease or agreement creating any obligation of the
Company to pay to any third party $100,000 or more with respect to any single
such contract or agreement, which such contract, lease or agreement is not
cancelable without penalty upon sixty (60) days' notice or less;

          (c) any contract or agreement for the sale, license, lease or
disposition of products creating any obligation of or to the Company in excess
of $100,000;

          (d) any contract or agreement for the marketing of products or
services for a price in excess of $100,000;

          (e) any contract containing covenants directly or explicitly limiting
the freedom of the Company to compete in any line of business or with any person
or entity other than with respect to the subject matter of such contract;

          (f) any license agreement (as licensor or licensee) involving the
payment of more than $100,000 annually (other than in connection with the resale
of off-the-shelf end- user licenses);

          (g) any contract or agreement for the purchase of any leasehold
improvements, equipment or fixed assets for a price in excess of $100,000;

          (h) any indenture, mortgage, promissory note, loan agreement, guaranty
or other agreement or commitment for borrowing in excess of $100,000 or any
pledge or security arrangement;

          (i) any joint venture, partnership, manufacturing, development or
supply agreement creating an obligation of more than $100,000 in one year;

          (j) any endorsement or any other advertising, promotional or marketing
agreement creating an obligation of more than $100,000 in one year;

          (k) any employment contracts, non-competition agreements, or
agreements with present or former officers, directors, employees or stockholders
of the Company or persons or organizations related to or affiliated with any
such persons (excluding any agreements between such persons and former employees
thereof of which the Company has no knowledge),

                                       9
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including without limitation any leases of Company stores or other facilities,
or any amendment to any such existing contract or agreement;

          (l) any stock redemption or purchase agreements or other agreements
affecting or relating to the capital stock of the Company, including, without
limitation, any agreement with any stockholder of the Company which includes,
without limitation, anti-dilution rights, registration rights, voting
arrangements, operating covenants or similar provisions, but excluding any stock
option agreement issued under the Stock Option Plan to directors, officers,
employees or consultants, copies of which have been provided to the Company or
its counsel;

          (m) any pension, profit sharing, retirement or stock options plans;

          (n) any royalty, dividend or similar arrangement based on the sales
volume of the Company;

          (o) any contract or agreement involving fixed price or fixed volume
arrangements in excess of $100,000;

          (p) any acquisition, merger or similar agreement;

          (q) any contract with a governmental body involving annual payments to
or by the Company in excess of $100,000;

          (r) any outstanding power of attorney;

          (s) any agreement with any stockholder or former stockholder of the
Company or any affiliate of any such stockholder;

          (t) any agreements with independent contractors involving payments by
the Company in excess of $100,000;

          (u) any administrative service agreements or arrangements with any
affiliated or unaffiliated persons or entities; or

          (v) any other contract not executed in the ordinary course of
business.

  All of the contracts and commitments of the Company are in full force and
effect and neither the Company, nor, to the best knowledge of the Company, any
other party thereto is in default thereunder (nor, to the best knowledge of the
Company, has any event occurred which with notice, lapse of time or both would
constitute a default thereunder), except to the extent that any such default
would not have a Material Adverse Effect, and the Company has not received
notice of any alleged default under any such contract, agreement, understanding
or commitment.

  2.12    Intellectual Property.  Except as set forth in Schedule 2.12:
          ---------------------

          (a) The Company has exclusive ownership of, free and clear of claims
or rights of any other person, or possesses exclusive licenses or other rights
to use, all Intellectual Property Rights listed in Schedule 2.12 (the "Company
                                                   -------------
Rights"), with full right to use, develop,

                                       10
<PAGE>

modify, sell, license, sublicense, dispose of, and bring actions for
infringement of, which rights the Company believes are sufficient for the
conduct of its business as presently conducted or proposed to be conducted
(other than with respect to "off-the-shelf" software utilized in the Company's
internal operations and which is generally commercially available to the public
at retail).

          (b)    The business of the Company as presently conducted and the
marketing of the products and services of the Company do not violate agreements
which the Company has with any third party or infringe any patent, trademark,
copyright or trade secret or, to the best knowledge of the Company, any other
Intellectual Property Rights of any third party.

          (c)    No claim is pending or, to the best knowledge of the Company,
threatened against the Company nor has the Company received any notice or claim
from any person asserting that any of the Company's present or contemplated
activities infringe or may infringe any Intellectual Property Rights of such
person, and the Company is not aware of any infringement by any other person of
any rights of the Company under any Intellectual Property Rights.

          (d)    To the best knowledge of the Company, none of the Company's
employees, consultants or independent contractors is in violation of any
agreement or in breach of any agreement or arrangement with former or present
employers relating to proprietary information or assignment of inventions.

          (e)    As used herein, the term "Intellectual Property Rights" shall
mean all intellectual property rights, including, without limitation, all of the
registered rights set forth on Schedule 2.12 and all patents, patent
                               -------------
applications, patent rights, trademarks, trademark applications, trade names,
service marks, service mark applications, copyrights, copyright applications,
computer programs and other computer software, inventions, designs, samples,
specifications, schematics, know-how, trade secrets, proprietary processes and
formulae, including production technology and processes, all source and object
code, algorithms, promotional materials, customer lists, vendor and dealer lists
and marketing research, and all documentation and media constituting, describing
or relating to the foregoing, including without limitation, manuals, memoranda
and records. Notwithstanding anything to the contrary in this Section 2.12, any
representation and warranty in this Section 2.12 with respect to patents, patent
applications and patent rights, shall be deemed made to the best knowledge of
the Company, to the extent not so qualified elsewhere in this Section 2.12.
Schedule 2.12 contains a list and brief description of all Intellectual Property
-------------
Rights owned by or registered in the name of the Company or of which the Company
is the licensor or a licensee of a material right or in which the Company has
any material right and, in each case, a brief description of the nature of the
right.

          (f)    Except as set forth in Schedule 2.12, to the best of its
                                        -------------
knowledge, all computer software products that are owned by the Company,
exclusively licensed to the Company, licensed, sold or otherwise distributed to
others by the Company or are otherwise required for the conduct of its business
("Software") are Year 2000 Compliant. As used herein, "Year 2000 Compliant"
shall mean with respect to any such Software, the ability of such Software to
perform the following-date related functions:

                                       11
<PAGE>

           (i)    consistently handle date information before, during and after
     January 1, 2000, including, but not limited to, accepting date input,
     providing date output and performing calculations on dates or portions of
     dates;

           (ii)   function accurately in accordance with the documentation
     relating to the applicable software and without interruption before, during
     and after January 1, 2000, without any change in operations associated with
     the advent of the new century;

           (iii)  respond to two-digit date input in a way that resolves any
     ambiguity as to the century; and

           (iv)   store and provide output of date information in ways that are
     unambiguous as to century.

     2.13  Litigation. Except as set forth in Schedule 2.13, there is no
           ----------                         -------------
litigation or governmental-proceeding or investigation pending or, to the best
knowledge of the Company and the Founders, threatened against the Company or
affecting any of its properties or assets or against any officer, director or
key employee of the Company in his or her capacity as an officer, director or
employee of the Company, which litigation, proceeding or investigation is
reasonably likely to have a Material Adverse Effect, or which may call into
question the validity or hinder the enforceability of this Agreement or any
other agreements or transactions contemplated hereby; nor, to the best knowledge
of the Company and the Founders, has there occurred any event nor does there
exist any condition on the basis of which any such litigation, proceeding or
investigation might be properly instituted or commenced. None of the matters
listed on Schedule 2.13 will have Material Adverse Effect. Schedule 2.13
          -------------                                    -------------
attached hereto sets forth all litigation, claims, proceedings or investigations
involving the Company or any of its officers, directors and shareholders in
connection with the business of the Company occurring, arising or existing
during the previous five (5) years.

     2.14  Employee Benefit Plans. The Company does not maintain or contribute
           ----------------------
to any employee benefit plan, fringe benefit, stock option, bonus or incentive
plan, severance pay policy or agreement, retirement, pension, profit sharing or
deferred compensation plan or agreement, or any similar plan or agreement (an
"Employee Benefit Plan") other than the Employee Benefit Plans identified and
described in Schedule 2.14 attached hereto.  To the Company's knowledge, the
             -------------
terms and operation of each such Employee Benefit Plan comply and have
heretofore complied in all material respects with all applicable laws and
regulations relating to such Employee Benefit Plans. There are no unfunded
obligations of the Company under any retirement, ,pension, profit-sharing,
deferred compensation plan or similar program. The Company is not required to
make any payments or contributions to any Employee Benefit Plan pursuant to any
collective bargaining agreement or, to the best knowledge of the Company, any
applicable labor relations law, and all Employee Benefit Plans are terminable at
the discretion of the Company without liability to the Company upon or following
such termination. Except as described in Schedule 2.14, the Company has never
                                         -------------
maintained or contributed to any Employee Benefit Plan providing or promising
any health or other nonpension benefits to terminated employees other than as
required by part 6 of subtitle B of title I of the Employee Retirement Income
Security Act of 1974, as amended ("ERISA"). With respect to any Employee Benefit
Plan, there has occurred no "prohibited transaction," as defined in Section 406
of ERISA or

                                       12
<PAGE>

Section 4975 of the Code, or breach of any duty under ERISA or other applicable
law which could result, directly or indirectly, in any taxes, penalties or other
liability to the Company. No litigation, arbitration or governmental
administrative proceeding (or investigation) or other proceeding (other than
those relating to routine claims for benefits) is pending or, to the best
knowledge of the Company, threatened with respect to any such Employee Benefit
Plan.

     Each Employee Benefit Plan which has ever been maintained by the Company
and which has been intended to qualify under Section 401 (a) or 501(c)(9) of the
Code has received a favorable determination or approval letter from the Internal
Revenue Service ("IRS") regarding its qualification under such section and has,
in fact, been qualified under the applicable section of the Code from the
effective date of such Employee Benefit Plan through and including the Closing
Date (or, if earlier, the date that all of such Employee Benefit Plan's assets
were distributed). No event or omission has occurred which would cause any such
Employee Benefit Plan to lose its qualification under the applicable Code
section and each asset held under any such Employee Benefit Plan may be
liquidated or terminated without the imposition of any redemption for surrender
charge or comparable liability. Except as set forth in Schedule 2.14, the
                                                       -------------
Company has never maintained any Employee Benefit Plan which has been subject to
title IV of ERISA or Code Section 412, including, but not limited to, any
"multiemployer plan" (as defined in Section 3(37) or Section 4001(a)(3) of
ERISA).  Each reference to "Company" in this Section 2.14 also refers to any
                                             ------------
other entity which would have ever been considered a single employer with the
Company under ERISA Section 4001 (b) or part of the same "controlled group" as
the Company for purposes of ERISA Section 302(d)(8)(C).

     2.15    Workforce Matters. As of the date of this Agreement, the Company
             -----------------
employs approximately eighty (80) full-time employees and one (1) part-time
employee and has contracts with four (4) independent contractors. The Company is
not delinquent in payments to any of its employees or independent contractors
for any wages, salaries, commissions, bonuses or other direct compensation for
any services performed for it to the date hereof or amounts required to be
reimbursed to such employees or independent contractors. Except as set forth in
Schedule 2.15 attached hereto, upon termination of employment of any of said
-------------
employees or independent contractors, no severance or other payments will become
due. Except as set forth in Schedule 2.15, the Company has no policy, practice,
                            -------------
plan or program of paying severance pay or any form of severance compensation in
connection with the termination of employment or services. The Company is and
heretofore has been in compliance in all material respects with all applicable
laws and regulations respecting labor, employment, fair employment practices,
terms and conditions of employment, and wages and hours. There are no charges of
employment discrimination or unfair labor practices except as set forth in
Schedule 2.15, nor are there any strikes, slowdowns, stoppages of work, or any
-------------
other concerted interference with normal operations existing, pending or, to the
best knowledge of the Company, threatened against or involving the Company.
There are no union organizing activities pending, or, to the best knowledge
ofthe Company, threatened with respect to the Company and no question concerning
representation exists respecting the employees of the Company. To the best
knowledge of the Company, there are no grievances, complaints or charges that
have been filed under any dispute resolution procedure (including, but not
limited to, any proceedings under any dispute resolution procedure under any
collective bargaining agreement) that are reasonably likely to have a Material
Adverse Effect. No arbitration or similar proceeding involving the Company is
pending and no claim therefor has been asserted. To the best knowledge of the
Company, no collective

                                       13
<PAGE>

bargaining agreement is in effect or is currently being or is about to be
negotiated by the Company. The Company is and heretofore has been in compliance
in all material respects with the requirements of the Immigration Reform Control
Act of 1986. There are no changes pending or, to the best knowledge of the
Company, threatened with respect to (including, without limitation, the
resignation of) the senior management or key supervisory personnel or
independent contractors of the Company nor has the Company received any notice
or information concerning any prospective change with respect to such senior
management or key supervisory personnel. Schedule 2.15 attached hereto contains
                                         --------------
a list of all managers, employees; consultants, independent contractors and
sales persons of the Company who, individually, are anticipated to receive base
compensation for the fiscal year ended December 31, 1999 in excess of $100,000,
including the current job title and aggregate annual compensation of each such
individual.

       2.16  List of Certain Vendors.  Schedule 2.16 sets forth a list of all
             -----------------------   -------------
equipment vendors to whom during the fiscal year ended December 31, 1998 the
Company made payments aggregating $100,000 or more, showing, with respect to
each, the name, address and dollar volume involved. To the best knowledge of the
Company, no such vendor has any plan or intention to terminate or reduce its
business with the Company or to materially and adversely modify its relationship
with the Company.

       2.17  Environmental Matters.
             ---------------------

             (a)    Except as set forth in Schedule 2.17 attached hereto, to the
                                           -------------
best of its knowledge, (i) the Company has never generated, transported, used,
stored, treated, disposed of, or managed any Hazardous Waste (as defined below);
(ii) no Hazardous Material (as defined below) has ever been or is threatened to
be spilled, released, or disposed of at any site presently or formerly owned,
operated, leased, or used by the Company, or has ever been located in the soil
or groundwater at any such site; (iii) no Hazardous Material has ever been
transported from any site presently or formerly owned, operated, leased, or used
by the Company for treatment, storage, or disposal at any other place; (iv) the
Company does not presently own, operate, lease, or use, nor has the Company
previously owned, operated, leased, or used, any site on which underground
storage tanks are or were located; and (v) no lien has ever been imposed by any
governmental agency on any property, facility, machinery, or equipment owned,
operated, leased, or used by the Company in connection with the presence of any
Hazardous Material.

             (b)    Except as set forth in Schedule 2.17 hereto, to the best of
                                           -------------
its knowledge, (i) the Company has no liability under, nor has it ever violated
in any material respect, any Environmental Law (as defined below); (ii) the
Company, any property owned, operated, leased, or used by the Company, and any
facilities and operations thereon, are presently in compliance in all material
respects with all applicable Environmental Laws; (iii) the Company has never
entered into or been subject to any judgment, consent decree, compliance order,
or administrative order with respect to any environmental or health and safety
matter or received any request for information, notice, demand letter,
administrative inquiry, or formal or informal complaint or claim with respect to
any environmental or health and safety matter or the enforcement of any
Environmental Law; and (iv) the Company has no reason to believe that any of the
items enumerated in clause (iii) of this subsection will be forthcoming.

                                       14
<PAGE>

               (c)    For purposes of this Section 2.17, (i) "Hazardous
                                           ------------
Material" shall mean and include any hazardous waste, hazardous material,
hazardous substance, petroleum product, oil, toxic substance, pollutant,
contaminant, or other substance which may pose a threat to the environment or to
human health or safety, as defined or regulated under any Environmental Law;
(ii) "Hazardous Waste" shall mean and include any hazardous waste as defined or
regulated under any Environmental Law; (iii) "Environmental Law" shall mean any
environmental or health and safety-related law, regulation, rule, ordinance, or
by-law at the foreign, federal, state, or local level, whether existing as of
the date hereof, previously enforced, or subsequently enacted; and (iv)
"Company" shall mean and include the Company, each of its subsidiaries and
predecessors in interest and all other entities for whose conduct the Company or
any of its subsidiaries is or may be held responsible under any Environmental
Law.

       2.18    Business; Compliance with Laws.
               ------------------------------

               (a)    The Company has all necessary franchises, permits,
licenses and other rights and privileges necessary to permit it to own its
property and to conduct its business as it is presently conducted. The Company
is currently and has heretofore been in compliance in all material respects with
all federal, state, local and foreign laws and regulations.

               (b)    None of the Company, any executive officer or director of
the Company, or any affiliate of any of the foregoing has, at any time within
the past five (5) years: (i) filed, or has had filed against any such person, a
petition under the federal bankruptcy laws or any state insolvency laws or has
had a receiver, fiscal agent or similar officer appointed by a court for the
business or property of any such person, or any partnership of which any such
person was a general partner at or within two (2) years before the time of such
filing, or any corporation or business association of which such person was an
executive officer at or within two (2) years prior to such filing; (ii) been
convicted in a criminal proceeding or named as a subject of a pending criminal
proceeding (excluding traffic violations and other minor offenses); (iii) been
subject to any order, judgment, or decree (not subsequently reversed, suspended
or vacated) of any court of competent jurisdiction permanently or temporarily
enjoining it or him from, or otherwise imposing limits or conditions on its or
his engaging in any securities, investment advisory, banking, insurance or other
type of business or acting as an officer or director of a public company; (iv)
been found by a court of competent jurisdiction in a civil action or by the
Securities and Exchange Commission (the "SEC") or the Commodity Futures Trading
Commission or similar state agency to have violated any federal or state
commodities, securities or unfair trade practices law, which such judgment or
finding has not been subsequently reversed, suspended, or vacated; or (v) taken
any action, been a party to or subject to any proceeding or been otherwise
involved in any matter which, if the Company were to file a registration
statement on Form S-1 with the SEC on the date hereof, would be required to be
disclosed pursuant to Item 401 (f) or Item 401 (g) of SEC Regulation S-K.

       2.19    Investment Banking; Brokerage. There are no claims for investment
               -----------------------------
banking fees, brokerage commissions, finder's fees or similar compensation
(exclusive of professional fees to lawyers and accountants) in connection with
the transactions contemplated by this Agreement payable by the Company or the
Founder or based on any arrangement or agreement made by or on behalf of the
Company or the Founder.

                                       15
<PAGE>

       2.20    Insurance. Except as set forth on Schedule 2.20, the Company has
               ---------                         -------------
fire, casualty, product liability and business interruption and other insurance
policies, with extended coverage, sufficient in amount to allow it to replace
any of its material properties which might be damaged or destroyed or sufficient
to cover liabilities to which the Company may reasonably become subject
(including, without limitation, liabilities relating to the so called "Year
2000" compliance matters), and such types and amounts of other insurance with
respect to its business and properties, on both a per occurrence and an
aggregate basis, as are customarily carried by persons engaged in the same or
similar businesses as the Company.  There is no default or event which could
give rise to a default under any such policy.

       2.21    Transactions with Affiliates. There are no loans, leases,
               ----------------------------
contracts or other continuing transactions between the Company and any officer,
director or five percent (5%) shareholder thereof or any family member or
affiliate of the foregoing persons and there have been no such transactions
within the past five (5) years except as set forth in Schedule 2.21 attached
                                                      --------------
hereto. No shareholder, director or officer of the Company nor any of their
respective family members or affiliates, owns directly or indirectly on an
individual or joint basis any interest in, or serves as an officer or director
or in another similar capacity of, any competitor, supplier or lessor of the
Company, or any organization which has a material contract or arrangement with
the Company, except as set forth in Schedule 2.21.
                                    -------------

       2.22    Customers. Schedule 2.22 attached hereto sets forth the name of
               ---------  --------------
each customer of the Company who accounted for more than ten percent (10%) of
the revenues of the Company for the twelve (12) months ended December 31, 1998
(the "Customers"). The relationships of the Company with its Customers are good
commercial working relationships. No Customer of the Company has canceled or
otherwise terminated its relationship with the Company, or has during the last
twelve (12) months decreased materially its usage of the services or purchase of
products of the Company. Schedule 2.22 attached hereto sets forth a list of
                         -------------
each former customer of the Company who has terminated its relationship with the
Company since January 1, 1997 and who represented greater than $100,000 of
business to the Company in the twelve (12) calendar months preceding such
termination. No Customer, has, to the best knowledge of the Company, any plan or
intention to terminate, to cancel or otherwise materially and adversely modify
its relationship with the Company or to decrease materially or limit its usage
of services, or purchase or distribution of the products of the Company.

       2.23    Warranty and Related Matters. Schedule 2.23 attached hereto sets
               ----------------------------  --------------
forth the terms of the Company's standard product warranty at the date hereof
with respect to all products or services that the Company distributes, services,
markets or sells for itself, any customer or any third party (each such product
or service shall be referred to herein as a "Company Product"). There are no
existing or, to the best knowledge of the Company, threatened in writing,
product liability, warranty or other similar claims against the Company alleging
that any Company Product is defective or fails to meet any product or service
warranties except as set forth in Schedule 2.23. The warranty reserve set forth
                                  -------------
on its current balance sheet is sufficient to cover outstanding warranty claims.

       2.24    Corporate Records. The corporate record books of the Company
               -----------------
accurately record in all material respects all corporate action taken by its
stockholders, board of directors, governing bodies and committees. The copies of
the corporate records of the Company made

                                       16
<PAGE>

available to the Investors for review, are true and complete copies of the
originals of such documents.

       2.25    Disclosure. The representations and warranties made or contained
               ----------
in this Agreement, the schedules and exhibits hereto and the certificates and
statements executed or delivered in connection herewith, and the information
concerning the business of the Company delivered to the Investors in connection
with or pursuant to this Agreement when taken together, do not and shall not
contain any untrue statement of a material fact and do not and shall not omit to
state a material fact required to be stated therein or necessary in order to
make such representations, warranties or other material not misleading in light
of the circumstances in which they were made or delivered. There have been no
events or transactions, or facts or information which have come to the attention
of the management of the Company and which have not been disclosed herein or in
a schedule hereto, having a direct impact on the Company or its assets,
liabilities, financial condition, business, results of operations or prospects
which, in the reasonable judgment of such management, have or could be expected
to have a Material Adverse Effect.

       2.26    Section 83(b) Elections. To the Company's knowledge, all
               -----------------------
individuals who have purchased shares of the Company's Common Stock that are
subject to a risk of forfeiture have timely filed elections under Section 83(b)
of the Code (as defined below) and any analogous provisions of applicable state
tax laws.

       2.27    Additional Representations and Warranties of the Founders. In
               ---------------------------------------------------------
addition to the foregoing, each of the Founders hereby additionally represents
and warrants to the Investors that:

               (a)    Authorization. All acts and conditions required by law on
                      -------------
the part of such Founder necessary for the authorization, execution and delivery
of this Agreement and the transactions contemplated herein, and the performance
of all obligations of such Founder hereunder, have been duly performed and
obtained and this Agreement constitutes a valid and legally binding obligation
of such Founders, enforceable in accordance with its terms.

               (b)    Title to the Common Shares. Such Founder has good and
                      --------------------------
marketable title to the Common Shares to be transferred to the Investors under
this Agreement, free and clear of any lien, pledge, security interest or other
encumbrance, and, upon delivery of the Common Shares at the Closing as provided
for in this Agreement, the Company will acquire good and marketable title
thereto.

               (c)    No Violation or Default. The execution, delivery and
                      -----------------------
performance of this Agreement and the consummation of the transactions
contemplated hereby will not result in any violation or default of any provision
of any instrument, judgment, order, writ, decree or contract to which such
Founder is a party or by which such Founder is bound, or require any consent
under or be in conflict with or constitute, with or without the passage of time
and giving of notice, either a violation or default under any such provision.

               (d)    No Action or Proceeding. There is no action, suit,
                      -----------------------
proceeding, or investigation pending or threatened against such Founder that
questions the validity of this

                                       17
<PAGE>

Agreement or the right of the Founder to enter into this Agreement or to
consummate the transactions contemplated hereby. Such Founder acknowledges and
agrees that the sale of the Shares pursuant hereto is made in exchange for fair
and reasonably equivalent consideration.

           (e)    Access to and Review of Company Information. The Founder
                  -------------------------------------------
acknowledges that he has had available to him all information which he considers
material in connection with the transactions contemplated by this Agreement and
has been afforded an opportunity to ask questions and receive answers from the
Company regarding the transactions contemplated by this Agreement.

           (f)    Investigation; Future Gains; etc. Such Founder has entered
                  --------------------------------
into this Agreement based on his own knowledge, investigation and analysis and
that of his advisors. Such Founder understands that the Company's plans for the
future, if successful, may result in the Company's capital stock becoming
significantly more valuable and that the future value of the Common Shares could
far exceed the amounts such Founder will receive under this Agreement. Such
Founder acknowledges and understands that the Company may pursue various
acquisitions and liquidity events. Nevertheless, such Founder is selling his
Common Shares of his own free will with full understanding of such recent
acquisitions. Neither the Company nor any Releasee (as defined herein) has made
any representation to the Founder about the advisability of this decision or the
potential future value of his Common Shares. Such Founder agrees that neither
the Company nor any Releasee is under any obligation to disclose to such Founder
any information or opinion they may have about the potential future value of the
Company's capital stock, even if such information is material.

           (g)    Sophistication. Such Founder has a prior and current business
                  --------------
and personal relationship with the Company, its officers and directors and has
the benefit of the business and financial experience of his professional
advisors who are unaffiliated with the Company, and who are not compensated by
the Company. Such Founder has the capacity to protect his own interests in
connection with the sale of the Common Shares.

           (h)    Tax Consequences. Such Founder has reviewed with his own tax
                  ----------------
and other advisors the federal, state, and local tax consequences of the sale of
the Common Shares. Such Founder is relying solely on such advisors and not on
any statements or representations of the Company or any of its agents or any of
the Releasees. Such Founder understands that he shall be responsible for his own
tax liability that may arise as a result of the transactions contemplated by
this Agreement.

SECTION 3. REPRESENTATIONS AND WARRANTIES OF THE INVESTORS
           -----------------------------------------------

     Each Investor hereby represents and warrants to the Company as follows:

     3.1   Investment Status. Each Investor is an "accredited investor" as such
           -----------------
term is defined in Rule 501 under the Securities Act of 1933, as amended (the
"Securities Act").  Each Investor is purchasing the Securities for its own
account, for investment only and not with a view to, or any present intention
of, effecting a distribution of such securities or any part thereof except
pursuant to a registration or an available exemption under applicable law.  Each
such Investor acknowledges that its respective Securities have not been
registered under the Securities

                                       18
<PAGE>

Act or the securities laws of any state or other jurisdiction and cannot be
disposed of unless they are subsequently registered under the Securities Act and
any applicable state laws or exemption from such registration is available. Each
such Investor further acknowledges that the offer and sale of the Securities was
not accomplished by the publication of any advertisement.

     3.2   Authority. Each Investor has full right, authority and power under
           ---------
its charter, Bylaws or governing partnership agreement, as applicable, to enter
into this Agreement and each agreement, document and instrument to be executed
and delivered by or on behalf of such Investor pursuant to or as contemplated by
this Agreement and to carry out the transactions contemplated hereby and
thereby, and the execution, delivery and performance by such Investor of this
Agreement and each such other agreement, document and instrument have been duly
authorized by all necessary action under such Investor's charter, Bylaws or
governing partnership agreement, as applicable. This Agreement and each
agreement, document and instrument executed and delivered by each Investor
pursuant to or as contemplated by this Agreement constitute, or when executed
and delivered will constitute, valid and binding obligations of each of the
Investors enforceable in accordance with their respective terms.

     3.3   Investment Banking; Brokerage Fees. No Investor has incurred or
           ----------------------------------
become liable for any broker's or finder's fee, banking fees or similar
compensation relating to or in connection with the transactions contemplated
hereby.

SECTION 4. CONDITIONS OF PURCHASE BY THE INVESTORS
           ---------------------------------------

     Each Investor's obligation to purchase and pay for the Securities to be
purchased by it shall be subject to the fulfillment to the Investors'
satisfaction, or the waiver by the Investors, on or before and at the Closing
Date of the following conditions:

     4.1   Certificate of Incorporation; Option Pool. The Company shall have
           -----------------------------------------
completed the following transactions on terms satisfactory to the Investors:

           (a)    The Company shall have adopted the Amended Certificate in the
form attached hereto as Exhibit B and such Amended Certificate shall have become
                        ---------
effective under the laws of the State of Delaware; and

           (b)    The Company's 1997 Equity Incentive Plan shall have 1,000,000
unallocated shares to be available for stock option grants to employees,
directors and consultants as determined by the Board of Directors.

     4.2   Representations; Satisfaction of Conditions. The representations and
           -------------------------------------------
warranties of the Company and each Founder contained in this Agreement shall be
true and correct on and as of the Closing Date, as applicable, each of the
conditions specified in this Section 4 shall have been satisfied or waived in
writing by Investors that are intended to hold not less than a majority of the
Convertible Preferred Shares and Redeemable Preferred Shares following the
consummation of the transactions contemplated hereby, and the Company shall have
delivered a certificate to the foregoing effect signed by its President.

                                       19
<PAGE>

     4.3    Opinion of Counsel. The Investors shall have received an opinion
            ------------------
from the Company's and the Founders' counsel dated as of the Closing Date,
substantially in the form attached hereto as Exhibit C.
                                             ---------

     4.4    Authorization. The Board of Directors and stockholders of the
Company shall have duly adopted resolutions in the form reasonably satisfactory
to the Investors and shall have taken all action necessary for the purpose of
authorizing the Company to consummate all of the transactions contemplated
hereby and the Investors shall have received a certificate of the Secretary of
the Company setting forth a copy of such resolutions and the Amended Certificate
and Bylaws of the Company and such other matters as may be reasonably requested
by the Investors.

     4.5    Employee Agreements Regarding Confidentiality. Except as set forth
            ---------------------------------------------
on Schedule 4.5, each service provider of the Company shall have executed the
   ------------
Company's form Employment Agreement in the form (or substantially the form)
attached hereto as Exhibit D and copies of such executed agreements shall have
                   ---------
been made available to special counsel for the Investors.

     4.6    Approvals and Consents. The Company and each Founder shall have made
            ----------------------
all filings with and notifications of governmental authorities, regulatory
agencies and other entities required to be made by them in connection with the
execution and delivery of this Agreement and the performance by them of the
transactions contemplated hereby and the Investors shall have received copies of
all required authorizations, waivers, consents and permits to permit the
consummation of the transactions contemplated by this Agreement, in form and
substance satisfactory to the Investors.

     4.7    Delivery of Closing Documents. On the Closing Date, the Company and
            -----------------------------
each Founder shall have delivered, or shall have caused to be delivered, to the
Investors, all in form and substance satisfactory to the Investors, the
following:

            (a)    Executed copies of the Stockholders Agreement, the
Registration Rights Agreement, the Indemnification Agreement and the Voting
Agreement in the forms attached hereto as Exhibit E, Exhibit F and Exhibit G and
                                          ---------  ---------     ---------
Exhibit H, respectively;
---------

            (b)    Certificates issued by (i) the Secretary of State of the
State of Delaware certifying that the Company has legal existence and is in good
standing; and (ii) the Secretary of State (or similar authority) of each
jurisdiction in which the Company has qualified to do business as a foreign
corporation (or is required to be so qualified) as to such foreign
qualification;

            (c)    A certificate executed by the President of the Company as to
the matters contemplated by Section 4.2, and to the further effect that the
business of the Company has been operated only in the ordinary course since the
date of the Base Balance Sheet (including without limitation that there have
been no material asset sales or dividends or distributions to stockholders since
such date) except as indicated in such certificate;

            (d)    A certificate of the Secretary of the Company which shall
certify the names of the officers of the Company authorized to sign this
Agreement and the other

                                       20
<PAGE>

documents, instruments or certificates to be delivered pursuant to this
Agreement by the Company or any of its officers, together with the true
signatures of such officers;

               (e)    Certificates evidencing the Convertible Preferred Shares,
Redeemable Preferred Shares, Common Shares and the Warrant to be purchased by
the Investors hereunder; and

               (f)    Such other supporting documents and certificates as the
Investors may reasonably request and as may be required pursuant to this
Agreement.

       4.8     No Material Adverse Change. Since the date of the Base Balance
               --------------------------
Sheet, there shall have been no material adverse change in the financial
condition, properties, assets, liabilities, business, operations or prospects of
the Company, whether or not in the ordinary course of business.

       4.9     All Proceedings Satisfactory; Due Diligence Review. All corporate
               --------------------------------------------------
and other proceedings taken prior to or at the Closing in connection with the
transactions contemplated by this Agreement, all documents and evidences
incident thereto, shall be reasonably satisfactory in form and substance to the
Investors, and the Investors shall have completed and shall be satisfied with
their due diligence review.

       4.10    No Violation or Injunction. The consummation of the transactions
               --------------------------
contemplated by this Agreement shall not be in violation of any law or
regulation, and shall not be subject to any injunction, stay or restraining
order.

       4.11    No Litigation. No action or proceeding by or before any court,
               -------------
administrative body or governmental agency shall have been instituted or
threatened which seeks to enjoin, restrain or prohibit, or might result in
damages in respect of, this Agreement or the complete consummation of the
transactions contemplated by this Agreement. No law or regulation shall be in
effect and no court order shall have been entered in any action or proceeding
instituted by any party which enjoins, restrains or prohibits this Agreement or
the complete consummation of the transactions contemplated in this Agreement.

       4.12    Fees and Expenses. The Company agrees to pay to the Investors
legal fees and related expenses incurred by the Investors, up to a maximum of
$40,000, in connection with the transactions contemplated by this Agreement.

       4.13    Election of Directors. The Company shall take proper corporate
               ---------------------
action, so that effective at the Closing, the size of the Board of Directors
shall be set at four (4) members, and one of whom shall be the nominee of TA
Associates (the "Investors' Nominee"). The Investors' Nominee shall further be
appointed as a member of the Compensation Committee and Audit Committee of the
Company's Board of Directors and the Company shall enter into an Indemnification
Agreement with the Investors' Nominee in the form attached hereto as Exhibit G.
                                                                     ---------

                                       21
<PAGE>

SECTION 5. COVENANTS OF THE COMPANY
           ------------------------

     The Company (which term shall be deemed to include, for purposes of this
Section 5, any subsidiary of the Company formed after the date of this
Agreement) agrees with the Investors that it shall comply with the following
covenants from and after the Closing except as shall otherwise be expressly
agreed pursuant to a written consent or consents executed by Investors holding
not less than a majority of the Convertible Preferred Shares and Conversion
Shares held by the Investors as a group and a majority of the Redeemable
Preferred Stock held by the Investors as a group, until the closing of a
Qualified Public Offering (as defined in the Company's Amended Certificate and
as in effect at the date hereof); provided that the Company's obligation under
Section 5.3 hereof shall survive for so long as the Investors' Nominee serves on
the Board of Directors of the Company.

     5.1   Financial Statements. The Company will maintain a system of accounts
           --------------------
in accordance with generally accepted accounting principles, keep full and
complete financial records and furnish to the Investors the following reports:
(a) within ninety (90) days after the end of each fiscal year commencing with
the year ending December 31, 1999, a copy of the consolidated balance sheet of
the Company as at the end of such year, together with consolidated statements of
income, retained earnings and cash flows of the Company for such year, audited
and certified by independent public accountants of recognized national standing
reasonably satisfactory to the Board of Directors, prepared in accordance with
generally accepted accounting principles and practices consistently applied; (b)
within thirty (30) days after the end of each month commencing with the month
ending June 30, 1999, a consolidated unaudited balance sheet of the Company as
at the end of such month and unaudited statements of income for the Company for
such month and for the year to date, each of the foregoing balance sheets and
statements to set forth in comparative form the corresponding figures for the
prior fiscal period and to include a brief written discussion and analysis by
management of the results shown therein; and (c) such other financial
information as Investors holding a majority of the Convertible Preferred Shares
or Conversion Shares and Redeemable Preferred Shares may reasonably request.

     5.2   Budget and Operating Forecast; Inspection.
           -----------------------------------------

           (a)    The Company will prepare and submit to the Board of Directors
of the Company and the Investors an annual budget and plan for each fiscal year
of the Company at least thirty (30) days prior to the beginning of such fiscal
year, together with management's written discussion and analysis of such budget
and plan. The budget shall be accepted as the budget for such fiscal year when
it has been approved by a majority of the full Board of Directors of the
Company. The Company shall review the budget periodically and shall advise the
Board of Directors of all changes therein and all material deviations therefrom.

           (b)    The Company will, upon reasonable prior notice to the Company
and subject to applicable security clearances, permit authorized representatives
(including, without limitation, accountants and legal counsel) of the Investors
reasonably acceptable to the Company, to visit and inspect any of the properties
of the Company and its subsidiaries, including its books of account (and to make
copies thereof and take extracts therefrom), and to discuss its affairs,
finances and accounts with its officers, administrative employees and

                                       22
<PAGE>

independent accountants, all at such reasonable times and as often as may be
reasonably requested by the Investors. The foregoing shall be in addition to,
and not in lieu of, the Investors' inspection rights under applicable law.

     5.3   Board of Directors; Indemnification. The Company shall pay or
           -----------------------------------
reimburse each Director for his reasonable travel expenses incurred in
connection with attending meetings or other functions of the Board of Directors
and committees thereof and for the reasonable costs incurred by him in
connection with any other work on behalf of the Company.  The Amended
Certificate and Bylaws of the Company will in respect of all times during which
any nominee of any of the Investors serves as a director of the Company provide
for exculpation and indemnification of the directors and limitations on the
liability of the directors to the fullest extent permitted under applicable
state law, and the Company shall obtain and maintain a reasonable amount of
directors and officers' liability insurance coverage on terms satisfactory to
the Investors' Nominee covering, among other things, violations of federal or
state securities laws.

     5.4   Key Person Insurance. The Company will use its best efforts to
           --------------------
promptly obtain and maintain in effect "key person" term life insurance policy
on the life of Raj Jain, Ram Duraiswamy, and Nicholas W. Fergis in the amount of
$1,000,000, which shall be payable to the Company, as named beneficiary under
such policy. At the request of the Investors (or their successors or
transferees) holding a majority of the Convertible Preferred Shares and the
Redeemable Preferred Shares, the proceeds of such insurance policy shall be
distributed pro rata to the Investors and the estate of the Founder based on
their respective holdings of the capital stock of the Company, with the
remaining proceeds to be retained by the Company.

     5.5   Conduct of Business; Material Adverse Changes. The Company will
           ---------------------------------------------
continue to engage principally in the business now conducted by the Company or a
business or businesses similar thereto or reasonably compatible herewith. The
Company will promptly advise the Investors of any event which represents or is
reasonably likely to result in a material adverse change in the condition
(financial or otherwise), business or prospects of the Company, and of each suit
or proceeding commenced or threatened against the Company which, if adversely
determined, in the reasonable judgment of the Company, is reasonably likely to
have a Material Adverse Effect. The Company will promptly advise the Investors
of any recall of the Company's products and services, any other material adverse
developments relating to the Company's products and services, and any suit or
proceeding commenced or threatened which is related to the Company's products
and services.

     5.6   Management Compensation. All compensation decisions for key
           -----------------------
management of the Company (including stock options and grants) shall be made by
a compensation committee of the Board which shall include the Investors' Nominee
(the "Compensation Committee"). All employment agreements providing for a term
of employment shall be subject to the prior review and approval of the
Compensation Committee. Notwithstanding the foregoing, the Company agrees to
comply with the Founders' Bonus Plan which is attached hereto as Schedule 5.6.
                                                                 ------------

                                       23
<PAGE>

SECTION 6. SURVIVAL; INDEMNIFICATION
           -------------------------

     6.1   Survival of Representations; Warranties and Covenants. All covenants,
           -----------------------------------------------------
agreements, representations and warranties of the Company, the Founders and the
Investors made herein and in the certificates, lists, exhibits, schedules or
other written information delivered or furnished to any Investor in connection
herewith (a) are material, shall be deemed to have been relied upon by the party
or parties to whom they are made and shall survive the Closing regardless of any
investigation on the part of such party or its representatives, and (b) shall
bind the parties' successors and assigns (including, without limitation, any
successor to the Company by way of acquisition, merger or otherwise), whether so
expressed or not, and, except as otherwise provided in this Agreement, all such
covenants, agreements, representations and warranties shall inure to the benefit
of the Investors' successors and assigns and to their transferees of Securities,
whether so expressed or not.

     6.2   Indemnification.
           ---------------

           (a)    Each Founder with respect to Section 6.2(a)(i) (or at the sole
option of the Investors with respect to any matter subject to indemnification
under Section 6.2(a)(i), the Company) and the Company with respect to Section
6.2(a)(ii) and (iii), each agree to defend, indemnify and hold harmless the
Investors, their affiliates and respective direct and indirect partners
(including partners of partners and stockholders and members of partners), and
the members, stockholders, directors, officers, employees and agents of each of
the foregoing and each person who controls any of them within the meaning of
Section 15 of the Securities Act or Section 20 of the Securities Exchange Act of
1934, as amended (parties receiving the benefit of the indemnification agreement
herein shall be referred to collectively as "Indemnified Parties" and
individually as an "Indemnified Party"), from and against any and all losses,
claims, damages, obligations, liens, assessments, judgments, fines, liabilities,
and other costs and expenses (including, without limitation, interest, penalties
and any investigation, legal and other expenses) incurred in connection with,
and any amount paid in settlement of, any action, suit or proceeding or any
claim asserted, as the same are incurred, of any kind or nature whatsoever which
may be sustained or suffered by any such Indemnified Party (a "Loss" or
"Losses"), without regard to any investigation by any of the Indemnified
Parties, based upon, arising out of, by reason of or otherwise in respect of or
in connection with (i) any inaccuracy in or breach of any representation or
warranty made by the Company or any Founder in this Agreement, or in any
schedule or certificate delivered by or on behalf of the Company or the Founders
as part of or pursuant to this Agreement, or any claim, action or proceeding
asserted or instituted or arising out of any matter or thing covered by such
representations or warranties, (ii) any breach of any covenant or agreement made
by the Company in this Agreement or in any agreement or instrument delivered
pursuant to this Agreement, or (iii) third party or governmental claims relating
in any way to the status of the Indemnified Party as a security holder,
director, agent, representative or controlling person of the Company or
otherwise relating to their involvement with the Company (including, without
limitation, any and all Losses under the Securities Act, the Exchange Act or
other federal or state statutory law or regulation, at common law or otherwise,
which relates directly or indirectly to the registration, purchase, sale or
ownership of any securities of the Company or to any fiduciary obligation owed
with respect thereto), including, without limitation, in connection with any
third party or governmental action or claim relating to any action taken or
omitted to be taken or alleged to have been taken or omitted to have been

                                       24
<PAGE>

taken by any Indemnified Party as shareholder, director, agent, representative
or controlling person of the Company or otherwise, alleging so-called control
person liability or securities law liability; provided, however, that the
Company will not be liable under this clause (iii) to the extent that any such
Loss arises from and is based on (A) an untrue statement or omission or alleged
untrue statement or omission in a registration statement or prospectus which is
made in reliance on and in conformity with written information furnished to the
Company in an instrument duly executed by or on behalf of such Indemnified Party
specifically stating that it is for use in the preparation thereof or (B) a
knowing and willful violation of the federal securities laws by an Indemnified
Party, as finally determined by a court of competent jurisdiction; provided
further, however, that the liabilities of the Founders under this Section 6.2
shall be limited to not more than $2,600,000 in the aggregate.

          (b)    If the indemnification provided for in Section 6.2(a)(iii)
above for any reason is held by a court of competent jurisdiction to be
unavailable to an Indemnified Party in respect of any Losses referred to
therein, then the Company, in lieu of indemnifying such Indemnified Party
thereunder, shall contribute to the amount paid or payable by such Indemnified
Party as a result of such Losses (i) in such proportion as is appropriate to
reflect the relative benefits received by the Company and the Investors, or (ii)
if the allocation provided by clause (i) above is not permitted by applicable
law, in such proportion as is appropriate to reflect not only the relative
benefits referred to in clause (i) above but also the relative fault of the
Company and the Investors in connection with the action or inaction which
resulted in such Losses, as well as any other relevant equitable considerations.
In connection with any registration of the Company's securities, the relative
benefits received by the Company and the Investors shall be deemed to be in the
same respective proportions that the net proceeds from the offering (before
deducting expenses) received by the Company and the Investors, in each case as
set forth in the table on the cover page of the applicable prospectus, bear to
the aggregate public offering price of the securities so offered. The relative
fault of the Company and the Investors shall be determined by reference to,
among other things, whether the untrue or alleged untrue statement of a material
fact or the omission or alleged omission to state a material fact relates to
information supplied by the Company or by the Investors and the parties'
relative intent, knowledge, access to information and opportunity to correct or
prevent such statement or omission.

     Each of the Company and the Investors agrees that it would not be just and
equitable if contribution pursuant to this Section 6.2(b) were determined by pro
rata or per capita allocation or by any other method of allocation which does
not take account of the equitable considerations referred to in the immediately
preceding paragraph. In connection with the registration of the Company's
securities, in no event shall an Investor be required to contribute any amount
under this Section 6.2(b) in excess of the lesser of (i) that proportion of the
total of such Losses equal to the proportion of the total securities sold under
such registration statement which is being sold by such Investor or (ii) the
proceeds received by such Investor from its sale of securities under such
registration statement. No person found guilty of fraudulent misrepresentation
(within the meaning of Section 11(f) of the Securities Act) shall be entitled to
contribution from any person who was not found guilty of such fraudulent
misrepresentation.

          (c)    The indemnification and contribution provided for in this
Section 6.2 will remain in full force and effect regardless of any investigation
made by or on behalf of the

                                       25
<PAGE>

Indemnified Parties or any officer, director, partner, member, employee, agent
or controlling person of the Indemnified Parties.

            (d)    The provisions of this Section 6.2 are in addition to and
shall supplement those set forth in the Registration Rights Agreement referred
to in Section 4.7(a).

     6.3    Release. Each Founder, for himself, his predecessors, heirs,
            -------
executors, administrators, assigns, and successors, hereby fully releases,
remises, acquits, and discharges the Company, and each of its present or former
officers, directors, shareholders, employees, agents, attorneys, parents,
subsidiaries, affiliates, partners, joint venturers, successors and assigns and
TA Associates, its affiliates, partners and joint venturers (collectively,
"Releasees") and covenants not to sue or otherwise institute or cause to be
instituted or in any way participate in (except at the request of the Company)
any legal or other proceedings or actions against any Releasee with respect to
those matters arising out of such Founder's investment in, or ownership of, the
Common Shares or the purchase thereof by the Investors.

            (a)    Uncertain Claims. Each Founder hereby acknowledges that he
                   ----------------
has considered the possibility that he may not now fully know the nature or
value of the claims which are generally released pursuant to paragraph (a) above
and that such general release extends to all claims of every nature and kind,
known or unknown, suspected or unsuspected, past or present, however arising,
and that any and all rights granted to the Founder pursuant to Section 1542 of
the California Civil Code or any analogous applicable state or federal law or
regulation are hereby expressly waived. Said Section 1542 of the Civil Code of
the State of California reads as follows:

            "A general release does not extend to claims which the
            creditor does not know or suspect to exist in its favor at
            the time of executing the release, which, if known by
            him, must have materially affected its settlement with
            the debtor."

SECTION 7. GENERAL
           -------

     7.1   Amendments, Waivers and Consents. For the purposes of this Agreement
           --------------------------------
and all agreements executed pursuant hereto, no course of dealing between or
among any of the parties hereto and no delay on the part of any party hereto in
exercising any rights hereunder or thereunder shall operate as a waiver of the
rights hereof and thereof. No provision hereof may be waived otherwise than by a
written instrument signed by the party or parties so waiving such covenant or
other provision. No amendment to this Agreement may be made without the written
consent of the Company and the Investors. Any actions required to be taken or
consents, approvals, votes or waivers required or contemplated to be given by
the Investors under this Agreement or the agreements contemplated hereby (except
as set forth in such agreements) shall require a vote of a majority of the
Investors based on the relative holdings of capital stock of the Company of the
Investors as a group at the relevant time (or, if the Investors have not yet
been issued capital stock of the Company, based on the intended relative
holdings of capital stock of the Company of the Investors as a group as
contemplated herein), and any such action by such percentage of Investors shall
bind all of the Investors.

                                       26
<PAGE>

     7.2   Legend on Securities. The Company and the Investors acknowledge and
           --------------------
agree that the following legend shall be typed on each certificate evidencing
any of the securities issued hereunder held at any time by an Investor:

                 "THE SECURITIES REPRESENTED HEREBY HAVE NOT
                 BEEN REGISTERED UNDER THE SECURITIES ACT OF
                 1933, AS AMENDED (THE "ACT"), OR ANY STATE
                 SECURITIES OR BLUE SKY LAWS AND MAY NOT BE
                 OFFERED, SOLD, TRANSFERRED, HYPOTHECATED OR
                 OTHERWISE ASSIGNED EXCEPT (1) PURSUANT TO A
                 REGISTRATION STATEMENT WITH RESPECT TO SUCH
                 SECURITIES WHICH IS EFFECTIVE UNDER THE ACT OR
                 (2) PURSUANT TO AN AVAILABLE EXEMPTION FROM
                 REGISTRATION UNDER THE ACT RELATING TO THE
                 DISPOSITION OF SECURITIES AND (3) IN ACCORDANCE
                 WITH APPLICABLE STATE SECURITIES AND BLUE SKY
                 LAWS."

     7.3   Governing Law. This Agreement shall be deemed to be a contract made
           -------------
under, and shall be construed in accordance with, the laws of the State of
California, without giving effect to conflict of laws principles thereof.

     7.4   Section Headings and Gender. The descriptive headings in this
           ---------------------------
Agreement have been inserted for convenience only and shall not be deemed to
limit or otherwise affect the construction of any provision thereof or hereof.
The use in this Agreement of the masculine pronoun in reference to a party
hereto shall be deemed to include the feminine or neuter, and vice versa, as the
context may require.

     7.5   Counterparts. This Agreement may be executed simultaneously in any
           ------------
number of counterparts, each of which when so executed and delivered shall be
taken to be an original; but such counterparts shall together constitute but one
and the same document.

     7.6   Notices and Demands. Any notice or demand which is required or
           -------------------
provided to be given under this Agreement shall be deemed to have been
sufficiently given and received for all purposes when delivered by hand,
telecopy, telex or other method of facsimile, or five (5) days after being sent
by certified or registered mail, postage and charges prepaid, return receipt
requested, or two (2) days after being sent by overnight delivery providing
receipt of delivery, to:

           (a)    if to the Company or any Founder, at 1252 Borregas Avenue,
Sunnyvale, California 94089 or at such other address designated by the Company
or the Founder to the Investors and the other parties hereto in writing with a
copy to Fenwick & West LLP, Two Palo Alto Square, Palo Alto, California 94306,
Attn: Fred M. Greguras, Esq.; and

           (b)    if to the Investors, at the mailing addresses as shown on
Exhibit A attached hereto, or at such other address designated by an Investor to
---------
the Company in writing with a copy to Brobeck, Phleger & Harrison LLP, Two
Embarcadero Place, 2200 Geng Road, Palo Alto, California 94303, Attn: Warren T.
Lazarow, Esq.

                                       27
<PAGE>

     7.7   Dispute Resolution. Except as provided below, any dispute arising out
           ------------------
of or relating to this Agreement or any other agreement contemplated hereby,
including the Registration Rights Agreement, Stockholders' Agreement, Voting
Agreement and Indemnification Agreement, or the breach, termination or validity
hereof or thereof shall be finally settled by binding arbitration conducted
expeditiously in accordance with the J.A.M.S./Endispute Comprehensive
Arbitration Rules and Procedures (the "J.A.M.S. Rules"). The arbitration shall
be governed by the United States Arbitration Act, 9 U.S.C. (S)(S)1-16, and
judgment upon the award rendered by the arbitrators may be entered by any court
having jurisdiction thereof. The place of arbitration shall be Santa Clara
County, California.

     Such proceedings shall be administered by the neutral arbitrator in
accordance with the J.A.M.S.  Rules as he/she deems appropriate, however, such
proceedings shall be guided by the following agreed upon procedures:

                (i)    mandatory exchange of all relevant documents, to be
     accomplished within forty-five (45) days of the initiation of the
     procedure;

                (ii)   no other discovery;

                (iii)  hearings before the neutral arbitrator which shall
     consist of a summary presentation by each side of not more than three (3)
     hours; such hearings to take place on one or two days at a maximum; and

                (iv)   decision to be rendered not more than ten (10) days
     following such hearings.

     Notwithstanding anything to the contrary contained herein, the provisions
of this Section 7.7 shall not apply with regard to any equitable remedies to
which any party may be entitled hereunder.

     Each of the parties hereto (a) hereby irrevocably submits to the
jurisdiction of any United States District Court of competent jurisdiction for
the purpose of enforcing the award or decision in any such proceeding, (b)
hereby waives, and agrees not to assert, by way of motion, as a defense, or
otherwise, in any such suit, action or proceeding, any claim that it is not
subject personally to the jurisdiction of the above-named courts, that its
property is exempt or immune from attachment or execution (except as protected
by applicable law), that the suit, action or proceeding is brought in an
inconvenient forum, that the venue of the suit, action or proceeding is improper
or that this Agreement or the subject matter hereof may not be enforced in or by
such court, and hereby waives and agrees not to seek any review by any court of
any other jurisdiction which may be called upon to grant an enforcement of the
judgment of any such court. Each of the parties hereto hereby consents to
service of process by registered mail at the address to which notices are to be
given. Each of the parties hereto agrees that its or his submission to
jurisdiction and its or his consent to service of process by mail is made for
the express benefit of the other parties hereto. Final judgment against any
party hereto in any such action, suit or proceeding may be enforced in other
jurisdictions by suit, action or proceeding on the judgment, or in any other
manner provided by or pursuant to the laws of such other jurisdiction.

                                       28
<PAGE>

     7.8   Remedies; Severability. Notwithstanding Section 7.7, it is
           ----------------------
specifically understood and agreed that any breach of the material provisions of
this Agreement by any person subject hereto will result in irreparable injury to
the other parties hereto, that the remedy at law alone will be an inadequate
remedy for such breach, and that, in addition to any other remedies which they
may have, the parties hereto may enforce their respective rights by actions for
specific performance (to the extent permitted by law). The Company may refuse to
recognize any unauthorized transferee as one of its shareholders for any
purpose, including, without limitation, for purposes of dividend and voting
rights, until the relevant party or parties have complied with all applicable
provisions of this Agreement and the Stockholders Agreement. Whenever possible,
each provision of this Agreement shall be interpreted in such a manner as to be
effective and valid under applicable law, but if any provision of this Agreement
shall be deemed prohibited or invalid under such applicable law, such provision
shall be ineffective to the extent of such prohibition or invalidity, and such
prohibition or invalidity shall not invalidate the remainder of such provision
or the other provisions of this Agreement.

     7.9   Integration. This Agreement, including the exhibits, documents and
           -----------
instruments referred to herein or therein, constitutes the entire agreement, and
supersedes all other prior agreements and understandings, both written and oral,
among the parties with respect to the subject matter hereof, including, without
limitation, the letter of intent between the parties hereto in respect of the
transactions contemplated herein, which letter of intent shall be completely
superseded by the representations, warranties and covenants of the Company
contained herein.

     7.10  Certain Definitions. For purposes of this Agreement, the term:
           -------------------

           (a)    "affiliate" of a person means (i) with respect to a person,
any member of such person's family (including any child, step-child, parent,
step-parent, spouse, sibling, mother-in-law, father-in-law, son-in-law,
daughter-in-law, brother-in-law or sister-in-law); (ii) with respect to an
entity, any officer, director, stockholder, partner, member or investor in such
entity or of or in any affiliate of such entity; and (iii) with respect to a
person or entity, any person or entity which directly or indirectly controls, is
controlled by, or is under common control with such person or entity.

           (b)    "control" (including the terms "controlled by" and "under
common control with") means the possession, directly or indirectly or as trustee
or executor, of the power to direct or cause the direction of the management
policies of a person, whether through the ownership of stock, as trustee or
executor, by contract or credit arrangement or otherwise;

           (c)    "person" means an individual, corporation, partnership,
limited liability company, association, trust or any unincorporated
organization; and

           (d)    "subsidiary" of a person means any corporation more than fifty
(50D/o) percent of whose outstanding voting securities, or any partnership,
limited liability company joint venture or other entity more than fifty percent
(50%) of whose total equity interest, is directly or indirectly owned by such
person.

     7.11  Legal Fees. The Company and the Investors shall each bear their own
           ----------
costs and other expenses that they incur with respect to the negotiation,
execution, delivery and

                                       29
<PAGE>

performance of this Agreement. If the Closing is effected, the Company shall pay
the reasonable fees, not to exceed $40,000 in the aggregate, and expenses of
Brobeck, Phleger & Harrison, LLP, special counsel to the Investors.

     7.12   Counterparts. This Agreement may be executed in two or more
            ------------
counterparts, each of which shall be deemed an original, but all of which
together shall constitute one and the same instrument.

     7.13   Confidential Information. The Investors acknowledge that they have
            ------------------------
and will acquire information and materials from the Company that is marked or
stated to be "confidential" (collectively "Confidential Information"), which in
no event will include any information which is available in the public domain as
of the date hereof or becomes part of the public domain through no fault of the
Investors or that the Company regularly gives to third parties without
restriction on user disclosure. Investors and their officers, directors,
partners, employees, agents and representatives agree not to disclose to others
(other than to attorneys or other professional advisors or to such Investors'
limited partners or to other affiliates of the Investor, which persons shall
agree to keep the material confidential) or use Confidential Information,
commercially or otherwise, in a manner that can be reasonably expected to be
detrimental to the Company, provided that nothing contained in this Section 7.13
shall impair the Investors' exercise of any rights or remedies hereunder or
agreements contemplated hereby or under applicable law.

                                       30
<PAGE>

     IN WITNESS WHEREOF, the parties hereto have caused this Securities Purchase
Agreement to be duly executed and delivered by their proper and duly authorized
representatives as of the day and year first above written.

                                    COMPANY:

                                    CHAIN LINK TECHNOLOGIES, INC.

                                    By: /s/ Raj Jain
                                        ---------------------------------
                                        Name:     Raj Jain
                                        Title:    President

                                    FOUNDERS:

                                    /s/ Raj Jain
                                    -------------------------------------
                                    Raj Jain

                                     /s/ Ram Duraiswamy
                                    -------------------------------------
                                    Ram Duraiswamy

                                    /s/ Nicholas W. Fergis
                                    -------------------------------------
                                    Nicholas W. Fergis

                SIGNATURE PAGE TO SECURITIES PURCHASE AGREEMENT

<PAGE>

                              INVESTORS:

                              TA/Advent VIII L.P.

                              By: TA Associates VIII LLC, its General Partner
                              By: TA Associates, Inc., its Manager

                              /s/ Kurt Jaggers
                              -----------------------------------------
                              By: Kurt Jaggers

                              Advent Atlantic & Pacific III L.P.

                              By: TA Associates AAP III Partners, its General
                                  Partner
                              By: TA Associates, Inc., its General Partner

                              /s/ Kurt Jaggers
                              -----------------------------------------
                              By: Kurt Jaggers

                              TA Executives Fund LLC

                              By: TA Associates, Inc., its Manager

                              /s/ Kurt Jaggers
                              -----------------------------------------
                              By: Kurt Jaggers

                              TA Investors LLC

                              By: TA Associates, Inc., its Manager i

                              /s/ Kurt Jaggers
                              -----------------------------------------
                              By: Kurt Jaggers

                SIGNATURE PAGE TO SECURITIES PURCHASE AGREEMENT<PAGE>

                                                                   EXHIBIT 10.07

                         SECURITIES PURCHASE AGREEMENT

     This Securities Purchase Agreement (this "Agreement") is made and entered
into as of November 15, 2000 by and among Kintana, Inc., a Delaware corporation
(the "Company"), and the parties listed on the Schedule of Investors attached to
this Agreement as Exhibit A (each hereinafter individually referred to as an
                  ---------
"Investor" and collectively referred to as the "Investors").

     Whereas, the Company desires to sell to the Investors, and the Investors
desire to purchase from the Company, shares of the Company's Series B
Convertible Participating Preferred Stock and/or shares of the Company's Series
B-1 Convertible Participating Preferred Stock on terms and conditions set forth
in this Agreement;

     Whereas, the Company desires to sell to Camelot Ventures/ Kintana, L.L.C.
("Camelot"), and Camelot desires to purchase from the Company a warrant to
purchase shares of the Company's Series B Convertible Participating Preferred
Stock on the terms and conditions set forth in this Agreement;

     Now, therefore, the parties hereby agree as follows:

     1.   AGREEMENT TO PURCHASE AND SELL STOCK.
          ------------------------------------

          1.1  Authorization.  As of the Closing (as defined below) the Company
               -------------
will have authorized the sale and issuance, pursuant to the terms and conditions
of this Agreement, of up to 3,500,000 shares of the Company's Series B
Convertible Participating Preferred Stock, par value $0.001 per share (the
"Series B Stock"), and up to 900,000 shares of the Company's Series B-1
Convertible Participating Preferred Stock, par value $0.001 per share (the
"Series B-1 Stock"), each such series having the rights, preferences, privileges
and restrictions set forth in the Amended and Restated Certificate of
Incorporation of the Company attached to this Agreement as Exhibit B (the
                                                           ---------
"Restated Certificate").

          1.2  Agreement to Purchase and Sell.   The Company agrees to sell to
               ------------------------------
each Investor at the Closing, and each Investor agrees, severally and not
jointly, to purchase from the Company at the Closing, the number of shares of
Series B Stock and/or Series B-1 Stock set forth beside such Investor's name on
Exhibit A, each at a price of $6.95 per share.  The shares of Series B Stock and
---------
Series B-1 Stock and the Warrant (as defined below) purchased and sold pursuant
to this Agreement will be collectively hereinafter referred to as the "Purchased
Securities" and the shares of Common Stock or Series B Stock, as applicable,
issuable upon conversion or exercise of the Purchased Securities, as applicable,
will be collectively hereinafter referred to as the "Conversion Shares".

          1.3  Warrant.  At the Closing, the Company shall issue to Camelot a
               -------
warrant in the form attached hereto as Exhibit J (the "Warrant") exercisable for
                                       ---------
719,425 shares of Series B Stock on the terms and conditions set forth therein.

     2.   CLOSING.
          -------
<PAGE>

          2.1  The Closing.  The purchase and sale of the Purchased Securities
               -----------
will take place at the offices of Fenwick & West LLP, Two Palo Alto Square, Palo
Alto, California, at 10:00 a.m. Pacific Time, on November 15, 2000 or at such
other time and place as the Company and Investors who have agreed to purchase a
majority of the Purchased Securities listed on Exhibit A mutually agree upon
                                               ---------
(which time and place are referred to in this Agreement as the "Closing").  At
the Closing, the Company will deliver to each Investor a certificate
representing the number of Purchased Securities that such Investor has agreed to
purchase hereunder as shown on Exhibit A against delivery to the Company by such
                               ---------
Investor of the full purchase price of such Purchased Securities, paid by (a) a
check payable to the Company's order, (b) wire transfer of funds to the Company,
or (c) any combination of the foregoing.

          2.2  Additional Closing(s).
               ---------------------

               (a)  Conditions of Additional Closing(s).  At any time and from
                    -----------------------------------
time to time during the one hundred twenty (120) day period immediately
following the Closing (the "Additional Closing Period"), the Company may, at one
or more additional closings (each an "Additional Closing"), without obtaining
the signature, consent or permission of any of the Investors, offer and sell to
other investors (the "New Investors"), at a price of $6.95 per share, additional
shares of Series B Stock and/or Series B-1 Stock; provided, however, that the
                                                  --------  -------
number of shares of Series B Stock and/or Series B-1 Stock that may be so sold
may not exceed the lesser of (i) the aggregate number of shares of Series B
Stock and Series B-1 Stock authorized by the Restated Certificate and (ii)
3,597,123; less in each case (A) the aggregate number of shares of Series B
Stock and Series B-1 Stock actually issued and sold by the Company at the
Closing and prior Additional Closings, (B) the number of shares of Series B
Stock issued upon exercise of the Warrant, and (C) the number of shares of
Series B Stock then subject to the unexercised portion of the Warrant.  New
Investors may include persons or entities who are already Investors under this
Agreement.

               (b)  Amendments. The Company and the New Investors purchasing
                    ----------
Series B Stock and/or Series B-1 Stock, as the case may be, at each Additional
Closing will execute counterpart signature pages to this Agreement, Restated
Rights Agreement (as defined in Section 5.8), the Restated Stockholders'
Agreement (as defined in Section 5.9) and the Restated Voting Agreement (as
defined in Section 5.10) (the Restated Rights Agreement, the Restated
Stockholders' Agreement and the Restated Voting Agreement hereafter collectively
referred to as the "Related Agreements") and such New Investors will, upon
delivery to the Company of such signature pages, become parties to, and bound
by, this Agreement and the Related Agreements, each to the same extent as if
they had been Investors at the Closing. Immediately after each Additional
Closing, Exhibit A to this Agreement will be amended to list the New Investors
         ---------
hereunder and the number of shares of Series B Stock and/or Series B-1 Stock, as
the case may be, purchased by each New Investor under this Agreement at each
such Additional Closing. The Company will promptly furnish to each Investor
copies of the amendments to Exhibit A referred to in the preceding sentence.
                            ---------

                                       2
<PAGE>

          (c)  Status of New Investors.  Upon the completion of each Additional
               -----------------------
Closing as provided in this Section 2, each New Investor will be deemed to be an
"Investor" for all purposes of this Agreement and the Related Agreements.

     3.   REPRESENTATIONS AND WARRANTIES OF THE COMPANY.  The Company hereby
          ---------------------------------------------
represents and warrants to each Investor that, except as set forth in the
Schedule of Exceptions ("Schedule of Exceptions") attached to this Agreement as
Exhibit C (which Schedule of Exceptions shall be deemed to be representations
---------
and warranties to the Investors by the Company under this Section 3), the
statements in the following paragraphs of this Section 3 are all true and
complete immediately prior to the Closing (or such other dates as may be
indicated in such statements):

          3.1  Organization, Good Standing and Qualification.  The Company has
               ---------------------------------------------
been duly incorporated and organized, and is validly existing in good standing,
under the laws of the State of Delaware.  The Company has the corporate power
and authority to enter into and perform this Agreement and the Related
Agreements, to own and operate it properties and assets and to carry on its
business as currently conducted and as presently proposed to be conducted.  The
Company is duly qualified to do business as a foreign corporation in good
standing in all jurisdictions where the nature of the Company's business or its
assets require such qualification, except for jurisdictions in which the failure
to so qualify does not have a Material Adverse Effect.  For purposes of this
Agreement, the term "Material Adverse Effect" means (a) a material adverse
effect upon the business, operations, properties, assets or financial condition
of the Company or (b) the impairment of the ability of the Company to perform
its obligations under this Agreement or the Related Agreements to which it is a
party.  In determining whether any individual event would result in a Material
Adverse Effect, notwithstanding that such event does not of itself have such
effect, a Material Adverse Effect shall be deemed to have occurred if the
cumulative effect of such event and all other then existing events subject to
representations and warranties of the Company set forth herein would result in a
Material Adverse Effect.

          3.2  Capitalization.  The capitalization of the Company immediately
               --------------
prior to the Closing consists of the following:

               (a)  Preferred Stock.  A total of 8,573,636 authorized shares of
                    ---------------
preferred stock, par value $0.001 per share (the "Preferred Stock"), consisting
of 2,782,424 shares designated as Series A Convertible Participating Preferred
Stock ("Series A Stock"), all of which are issued and outstanding and which are
convertible into 2,782,424 shares of Common Stock, 3,500,000 shares designated
as Series B Convertible Participating Preferred Stock, none of which are issued
and outstanding, 900,000 shares designated as Series B-1 Convertible
Participating Preferred Stock, none of which are issued and outstanding, and
1,391,212 shares designated as Redeemable Preferred Stock, all of which are
issued and outstanding.  Upon the Closing, the rights, preferences and
privileges of each series of Preferred Stock will be as stated in the Restated
Certificate and as provided by law.

                                       3
<PAGE>

               (b)  Common Stock. A total of 100,000,000 authorized shares of
                    ------------
common stock, par value $0.001 per share (the "Common Stock"), of which
28,550,279 shares are issued and outstanding.

               (c)  Options, Warrants, Reserved Shares. Except for (i) the
                    ----------------------------------
conversion privileges of the Series A Stock, the Series B Stock and the Series
B-1 Stock; (ii) the 7,660,506 shares of Common Stock reserved for issuance under
the Company's 1997 Equity Incentive Plan (the "Plan"), under which options to
purchase 4,184,742 shares are outstanding; (iii) the 160,000 shares of Common
Stock reserved for issuance under the Company's Company Share Option Scheme for
its United Kingdom subsidiary ("UK Option Scheme"), under which options to
purchase 68,500 shares are outstanding, (iv) the rights of first refusal granted
to certain investors under Section 3 of that certain Stockholders' Agreement
dated June 11, 1999, by and among the Company, such investors and certain other
stockholders of the Company (the "Existing Refusal Rights"), (v) the Warrant,
and (vi) warrants to purchase 825,834 shares of Common Stock, there is no
outstanding option, warrant, right (including conversion or preemptive rights)
or agreement for the purchase or acquisition from the Company of any shares of
its capital stock or any securities convertible into or ultimately exchangeable
or exercisable for any shares of the Company's capital stock. Apart from the
exceptions noted in this Section 3.2(c), no shares of the Company's outstanding
capital stock, or stock issuable upon exercise or exchange of any outstanding
options, warrants or rights, or other stock issuable by the Company, are subject
to any preemptive rights, rights of first refusal or other rights to purchase
such stock (whether in favor of the Company or any other person), pursuant to
any agreement or commitment of the Company. Apart from that certain Voting
Agreement dated June 11, 1999, by and among the Company and certain of its
stockholders (which agreement will be superseded by the Restated Voting
Agreement), the Company is not a party or subject to any agreement or
understanding, and, to the Company's knowledge, there is no agreement or
understanding between any persons and/or entities, which affects or relates to
the voting or giving of written consents with respect to any security or by a
director of the Company.

               (d)  The outstanding shares of the capital stock of the Company
are duly authorized and validly issued, fully paid and nonassessable, and have
been approved by all requisite stockholder action.

          3.3  Subsidiaries.  The Company does not presently own or control,
               ------------
directly or indirectly, any interest in any other corporation, partnership,
limited liability company, trust, joint venture, association, or other entity.

          3.4  Due Authorization.  All corporate action on the part of the
               -----------------
Company's directors and stockholders necessary for (i) the authorization,
execution, delivery of, and the performance of all obligations of the Company
under, this Agreement, the Related Agreements the Board Observation Side Letter
in the form attached hereto as Exhibit K (the "Board Observation Side Letter")
and the SBA Side letter in the form attached hereto as Exhibit L (together with
the Board Observation Side Letter, the "Side Letters"); (ii) the authorization,
issuance, reservation for issuance and delivery of all of the Purchased
Securities being sold under this Agreement, the Series B Preferred Stock to be
issued upon exercise of the Warrant, and of

                                       4
<PAGE>

the Conversion Shares; and (iii) the filing of the Restated Certificate has been
taken or will be taken prior to the Closing. This Agreement constitutes, along
with the Related Agreements and the Side Letters, when executed and delivered,
will constitute, valid and legally binding obligations of the Company,
enforceable in accordance with their respective terms, except as may be limited
by (i) applicable bankruptcy, insolvency, reorganization or others laws of
general application relating to or affecting the enforcement of creditors'
rights generally, (ii) the effect of rules of law governing the availability of
equitable remedies and (iii) applicable federal or state securities laws with
respect to the indemnification provisions contained in the Restated Rights
Agreement.

          3.5  Valid Issuance of Stock.
               -----------------------

               (a)  The Purchased Securities, when issued and paid for as
provided in this Agreement, will be duly authorized and validly issued, fully
paid and nonassessable and will be free of restrictions on transfer other than
restrictions under this Agreement and the Restated Rights Agreement and under
applicable state and federal securities laws. The Conversion Shares and the
shares of Common Stock issuable upon conversion of the Series B Stock and the
Series B-1 Stock and the shares of Series B Stock issuable upon exercise of the
Warrant, have been duly and validly reserved for issuance upon conversion and/or
exercise, respectively, thereof and, when issued upon such conversion in
accordance with the Restated Certificate (assuming no change in the Restated
Certificate or in applicable law), or when issued upon exercise of the Warrant
pursuant to the term set forth therein will be duly authorized and validly
issued, fully paid and nonassessable and, to the Company's knowledge, will be
free of restrictions on transfer other than restrictions under this Agreement
and the Related Agreements and under applicable state and federal securities
laws.

               (b)  Based in part on the representations made by the Investors
in Section 4 hereof, the offer and sale of the Purchased Securities solely to
the Investors in accordance with this Agreement and (assuming no change in
currently applicable law or the Restated Certificate, no transfer of Purchased
Securities by a holder thereof and no commission or other remuneration is paid
or given, directly or indirectly, for soliciting the issuance of Conversion
Shares upon conversion of the Purchased Securities ) the issuance of the
Conversion Shares and the issuance of Series B Stock upon exercise of the
Warrant are exempt from the registration and prospectus delivery requirements of
the U.S. Securities Act of 1933, as amended (the "1933 Act") and the securities
registration and qualification requirements of the currently effective
provisions of the securities laws of the States in which the Investors are
resident based upon their addresses set forth on the Schedule of Investors
attached hereto as Exhibit A.
                   ---------

          3.6  Governmental Consents.  No consent, approval, order or
               ---------------------
authorization of, or registration, qualification, designation, declaration or
filing with, any federal, state or local governmental authority is required on
the part of the Company in order to enable the Company to execute, deliver and
perform its obligations under this Agreement and the Related Agreements except
                                                                        ------
for (i) the filing of the Restated Certificate with the Secretary of State of
---
Delaware and (ii) such qualifications or filings under applicable securities
laws as may be required in connection with the transactions contemplated by this
Agreement.  All such qualifications and filings will, in

                                       5
<PAGE>

the case of qualifications, be effective on the Closing and will, in the case of
filings, be made within the time prescribed by law.

          3.7  Litigation.  There is no action, suit, proceeding, claim,
               ----------
arbitration or investigation ("Action") pending (or, to the Company's knowledge,
currently threatened) against the Company, its activities, properties or assets
or, to the Company's knowledge, against any officer, director or employee of the
Company in connection with such officer's, director's or employee's relationship
with, or actions taken on behalf of, the Company.  To the Company's knowledge,
there is no Action pending or threatened involving the prior employment of any
of the Company's employees, their use in connection with the Company's business
of any information or techniques allegedly proprietary to any of their former
employers, or their obligations under any agreements with prior employers.  The
Company is not a party to or subject to the provisions of any order, writ,
injunction, judgment or decree of any court or government agency or
instrumentality.  There is no Action by the Company currently pending or which
the Company presently intends to initiate.  None of the matters listed on the
Schedule of Exceptions with respect to this Section 3.7 could reasonably be
expected to have, either individually or in the aggregate, a Material Adverse
Effect.

          3.8  Proprietary Rights Agreements.  Each officer, employee and
               -----------------------------
contractor of the Company has entered into and executed an Employee Invention
Assignment Agreement in the form attached to this Agreement as Exhibit D or an
                                                               ---------
employment or consulting agreement containing substantially similar terms.

          3.9  Status of Proprietary Assets.
               ----------------------------

               (a)  Status. The Company has sufficient title and ownership of,
                    ------
or is duly licensed under or otherwise authorized to use, all patents, patent
applications, trademarks, service marks, trade names, and copyrights, trade
secrets, confidential and proprietary information, and proprietary rights (all
of the foregoing collectively hereinafter referred to as the "Proprietary
Assets"), necessary to enable it to carry on its business as now conducted and
as proposed to be conducted and to its knowledge, its rights in Proprietary
Assets do not conflict with or infringe upon the rights of any third party.

               (b)  Licenses; Other Agreements. The Company has not granted, any
                    --------------------------
options, licenses or agreements of any kind relating to any Proprietary Asset of
the Company other than normal nonexclusive end use customer licenses entered
into in the ordinary course, nor is the Company bound by or a party to any
option, license or agreement of any kind with respect to any of its Proprietary
Assets.

          3.10 Infringement.  The Company has not received any communications
               ------------
alleging that the Company or its employees has violated or infringed or, by
conducting its business as proposed, would violate or infringe any of the
patents, trademarks, service marks, trade names, copyrights, or trade secrets,
or any proprietary rights of any other person or entity.  The Company is not
aware that any of its employees is obligated under any contract (including
licenses, covenants or commitments of any nature) or other agreement, or subject
to any judgment, decree or order of any court or administrative agency, that
would interfere with the use

                                       6
<PAGE>

of his or her best efforts to promote the interests of the Company or that would
conflict with the Company's business as currently conducted and proposed to be
conducted. Neither the execution nor delivery of this Agreement, the Related
Agreements or the Restated Certificate nor the carrying on of the Company's
business by the employees of the Company, nor the conduct of the Company's
business as proposed, will, to the Company's knowledge, conflict with or result
in a breach of the terms, conditions or provisions of, or constitute a default
under, any contract, covenant or instrument under which any of such employees is
now obligated. The Company does not believe it is or will be necessary to
utilize any inventions, trade secrets or proprietary information of any of its
employees made prior to their employment by the Company, except for inventions,
trade secrets or proprietary information that have been assigned to the Company.

          3.11  Compliance with Law and Documents.  The Company is not in
                ---------------------------------
violation or default of any provisions of its Restated Certificate or Bylaws,
both as amended, or of any instrument, judgment, order , writ, decree or
contract to which it is a party or by which it or any of its assets is bound,
and is in compliance with all applicable statutes, laws, regulations or orders
of any governmental authority having jurisdiction over the Company or its
assets, except for any violations, defaults or noncompliance which, individually
or in the aggregate, do not have a Material Adverse Effect.  The Company has not
received any notice of any violation of any such statute, law, regulation or
order which has not been remedied prior to the date hereof.  The execution,
delivery and performance of this Agreement and the Related Agreements and the
consummation of the transactions contemplated hereby or thereby will not result
in any such violation or default, or be in conflict with or result in a
violation or breach of, with or without the passage of time or the giving of
notice or both, the Company's Restated Certificate or Bylaws, any judgment,
order or decree of any court or arbitrator to which the Company is a party or is
subject, any material agreement or contract of the Company, or, to the Company's
knowledge, a violation of any statute, law, regulation or order, or an event
which results in the creation of any lien, charge or encumbrance upon any asset
of the Company or the suspension, revocation, impairment, forfeiture, or
nonrenewal of any material permit.

          3.12  Registration Rights. Except as provided in the Restated Rights
                -------------------
Agreement and Warrant, the Company is not under any obligation to register under
the 1933 Act any of its currently outstanding securities or any securities
issuable upon exercise or conversion of its currently outstanding securities nor
is the Company obligated to register or qualify any such securities under any
state securities or blue sky laws.

          3.13  Title to Property and Assets.  The properties and assets the
                ----------------------------
Company owns are owned by the Company free and clear of all mortgages, deeds of
trust, liens, encumbrances and security interests except for statutory liens for
the payment of current taxes that are not yet delinquent and liens, encumbrances
and security interests which arise in the ordinary course of business and which
do not affect material properties and assets of the Company.  With respect to
the property and assets it leases, the Company is in compliance with such leases
in all material respects, and to its knowledge, holds a valid leasehold interest
free and clear of any liens, claims or encumbrances.

                                       7
<PAGE>

          3.14 Financial Statements.  Attached to this Agreement as Exhibit E is
               --------------------                                 ---------
the Company's unaudited balance sheet and statement of operations and statement
of cash flows of the Company for the period ended June 30, 2000 (the "Balance
Sheet Date") (all such financial statements being collectively referred to
herein as the "Financial Statements").  Such Financial Statements (i) are in
accordance with the books and records of the Company, (ii) are true, correct and
complete and present fairly the financial condition of the Company at the date
or dates therein indicated and the results of operations for the period or
periods therein specified, and (iii) have been prepared in accordance with
generally accepted accounting principles applied on a consistent basis, except
(A) that the Financial Statements may not contain all footnotes required by
generally accepted accounting principles and (B) for normal year-end audit
adjustments.  Except as noted on the Schedule of Exceptions by reference to this
Section 3.14 or Section 3.15 hereof, there has been no change in the condition,
financial or otherwise, or operations of the Company since the Balance Sheet
Date that constitutes a Material Adverse Effect.

          3.15 Activities Since Balance Sheet Date.  Since the Balance Sheet
               -----------------------------------
Date, the Company has not:

               (a)  declared or paid any dividends, or authorized or made any
distribution upon or with respect to any class or series of its capital stock;

               (b)  incurred any indebtedness for money borrowed or incurred any
other liabilities individually in excess of $100,000, or in case of indebtedness
and/or liabilities individually less than $100,000, in excess of $500,000 in the
aggregate;

               (c)  made any loans or advances to any person, other than
ordinary advances for travel expenses;

               (d)  sold, exchanged or otherwise disposed of any material
tangible or intangible assets or rights other than the sale of inventory in the
ordinary course of its business;

               (e)  incurred any damage, destruction or loss of property,
whether or not covered by insurance, materially and adversely affecting the
assets, properties, financial condition, operating results, prospects or
business of the Company (as such business is presently conducted and as it is
proposed to be conducted);

               (f)  waived a valuable right or a material debt owed to it;

               (g)  satisfied or discharged any lien, claim or encumbrance or
payment of any obligation of the Company, except in the ordinary course of
business;

               (h)  made any material change or amendment to a material contract
or arrangement by which the Company or any of its assets or properties is bound
or subject;

               (i)  received notice that there has been a loss of, or material
order cancellation by, any major customer of the Company;

                                       8
<PAGE>

               (j)  entered into any material transactions with any of its
officers, directors or employees or any entity controlled by any of such
individuals; or

               (k)  made any agreement or commitment to do any of the things
described in this Section 3.15.

          3.16  Agreements.
                ----------

                (a)  No employee, officer, or director of the Company or member
of his or her immediate family is indebted to the Company, nor is the Company
indebted (or committed to make loans or extend or guarantee credit) to any of
them. To the Company's knowledge, none of such persons has any direct or
indirect ownership interest in any firm or corporation with which the Company is
affiliated or with which the Company has a business relationship, or any firm or
corporation that competes with the Company, except that employees, officers, or
directors of the Company and members of their immediate families may own stock
representing a non-controlling interest in publicly traded companies that may
compete with the Company.

                (b)  There are no agreements, understandings, instruments,
contracts, proposed transactions, judgments, orders, writs or decrees to which
the Company is a party or, to its knowledge, by which it is bound which may
involve (i) obligations (contingent or otherwise) of, or payments to, the
Company in excess of $250,000 (other than transactions involving the sale or
license of the Company's software products and/or services arising in the
ordinary course of business), (ii) the transfer or license of any patent,
copyright, trade secret or other proprietary right to or from the Company (other
than licenses arising from the purchase of "off the shelf" software or other
standard products in the ordinary course of business or the license of the
Company's software products in the ordinary course of business), or (iii)
indemnification by the Company with respect to infringements of proprietary
rights (other than indemnification obligations arising from purchase or license
agreements entered into in the ordinary course of business).

          3.17  Environmental and Safety Laws.  To its knowledge, the Company is
                -----------------------------
not in violation of any applicable statute, law or regulation relating to the
environment or occupational health and safety, and to its knowledge, no material
expenditures are or will be required in order to comply with any such existing
statute, law or regulation.

          3.18  Insurance.  The Company maintains, with financially sound,
                ---------
reputable and solvent companies, insurance policies (a) insuring its assets
against loss by fire, explosion, theft and other risks and casualties as are
customarily insured against by companies engaged in the same or a similar
business in the same or similar geographic region, (b) insuring it against
liability for personal injury and property damages relating to its assets, in
such amounts and covering such risks as are usually insured against by companies
engaged in the same or similar business in the same or similar geographic
region, and (c) insuring it against liability for personal injury, death or
property damage resulting from the use of products sold by the Company in such
amounts as are maintained by responsible companies engaged in the same or
similar business.

                                       9
<PAGE>

          3.19  Employee Compensation and Benefit Plans; Obligations of
                -------------------------------------------------------
Management.  The Company is not a party to or bound by any currently effective
----------
employment contracts, deferred compensation agreements, bonus plans, incentive
plans, profit sharing plans, retirement agreements, or other employee
compensation agreements.  Subject to general principles related to wrongful
termination of employees, the employment of each officer and employee of the
Company is terminable at the will of the Company without any obligation on the
part of the Company to make any payment in connection therewith or to accelerate
the vesting of any rights or securities.

          3.20  Disclosure.  This Agreement and the Exhibits hereto do not
                ----------
contain any untrue statement of a material fact or omit any material fact
necessary to make the statements contained therein or herein in view of the
circumstances under which they were made not misleading.

          3.21  Marketing Rights. The Company is not bound by any agreement that
                ----------------
adversely affects its exclusive right to develop, distribute, market or sell its
products and services.

          3.22  Tax Elections; Payments; and Withholdings.  The Company has not
                -----------------------------------------
elected pursuant to the Internal Revenue Code of 1986, as amended (the "Code"),
to be treated as an "S" corporation or a collapsible corporation pursuant to
Section 341(f) or Section 1362(a) of the Code, nor has it made any other
elections pursuant to the Code (other than elections which relate solely to
matters of accounting, depreciation or amortization) which would have a material
adverse effect on the business, properties or financial condition of the
Company.  Since its inception, the Company has not incurred any taxes,
assessments or governmental charges other than in the ordinary course of
business and the Company has made adequate provisions on its books of account
for all taxes, assessments and governmental charges with respect to its
business, properties and operations for such period and the liability therefor
reflected in the Financial Statements is adequate under generally accepted
accounting principles.  The Company has duly and timely filed, or will duly and
in a timely manner file, all tax returns and other filings in respect of any
such taxes, assessments and governmental charges which are required to be filed
by it and has in a timely manner paid (or will in a timely manner pay) all such
taxes, assessments and governmental charges shown to be due on such returns.
All such returns and other filings are or will be complete and were or will be
prepared in good faith and in accordance with all applicable rules and
regulations.  The Company has withheld or collected from each payment made to
each of its employees, the amount of all taxes (including, but not limited to,
federal income taxes, Federal Insurance Contribution Act taxes and Federal
Unemployment Tax Act taxes) required to be withheld or collected therefrom, and
has paid the same to the proper tax receiving officers or authorized
depositories.

          3.23  Employees.  The Company is not aware that any officer or key
                ---------
employee intends to terminate his or her employment with the Company, nor does
the Company have a present intention to terminate the employment of any officer
or key employee.

                                       10
<PAGE>

          3.24 Permits. The Company has all business permits, licenses and any
               -------
similar authority necessary for the conduct of its business as now being
conducted by it, the lack of which could materially and adversely affect the
business, assets or financial condition of the Company, and the Company believes
it can obtain on reasonable terms any similar authority for the conduct of its
business as planned to be conducted.  The Company is not in default in any
material respect under any of such business permits, licenses or other similar
authority.

     4.   REPRESENTATIONS, WARRANTIES AND CERTAIN AGREEMENTS OF INVESTORS.  Each
          ---------------------------------------------------------------
Investor, severally and not jointly, hereby represents and warrants to, and
agrees with, the Company that:

          4.1  Authorization.  This Agreement constitutes such Investor's valid
               -------------
and legally binding obligation, enforceable in accordance with its terms except
as may be limited by (i) applicable bankruptcy, insolvency, reorganization or
other laws of general application relating to or affecting the enforcement of
creditors' rights generally and (ii) the effect of rules of law governing the
availability of equitable remedies and (iii) to the extent the indemnification
provisions contained in the Restated Rights Agreement may be limited by
applicable federal or state securities laws.  Each Investor represents that such
Investor has full power and authority to enter into this Agreement and the
Related Agreements.

          4.2  Purchase for Own Account.  The Purchased Securities to be
               ------------------------
purchased by such Investor hereunder will be acquired for investment for such
Investor's own account, not as a nominee or agent, and not with a view to the
public resale or distribution thereof within the meaning of the 1933 Act, and
such Investor has no present intention of selling, granting any participation
in, or otherwise distributing the same.  If not an individual, such Investor
also represents that such Investor has not been formed for the specific purpose
of acquiring Purchased Securities.

          4.3  Disclosure of Information.  Such Investor has received or has had
               -------------------------
full access to all the information it considers necessary or appropriate to make
an informed investment decision with respect to the Purchased Securities to be
purchased by such Investor under this Agreement.  Such Investor further has had
an opportunity to ask questions and receive answers from the Company regarding
the terms and conditions of the offering of the Purchased Securities and to
obtain additional information (to the extent the Company possessed such
information or could acquire it without unreasonable effort or expense)
necessary to verify any information furnished to such Investor or to which such
Investor had access.  The foregoing, however, does not in any way limit or
modify the representations and warranties made by the Company in Section 3.

          4.4  Investment Experience.  Such Investor understands that the
               ---------------------
purchase of the Purchased Securities involves substantial risk.  Such Investor:
(i) has experience as an investor in securities of companies in the development
stage and acknowledges that such Investor is able to fend for itself, can bear
the economic risk of such Investor's investment in the Purchased Securities and
has such knowledge and experience in financial or business matters that such
Investor is capable of evaluating the merits and risks of this investment in the
Purchased

                                       11
<PAGE>

Securities and protecting its own interests in connection with this investment
and/or (ii) has a preexisting personal or business relationship with the Company
and certain of its officers, directors or controlling persons of a nature and
duration that enables such Investor to be aware of the character, business
acumen and financial circumstances of such persons.

          4.5  Accredited Investor Status.  Such Investor is an "accredited
               --------------------------
investor" within the meaning of Regulation D promulgated under the 1933 Act.

          4.6  Restricted Securities.  Such Investor understands that the
               ---------------------
Purchased Securities are characterized as "restricted securities" under the 1933
Act inasmuch as they are being acquired from the Company in a transaction not
involving a public offering and that under the 1933 Act and applicable
regulations thereunder such securities may be resold without registration under
the 1933 Act only in certain limited circumstances.  In this connection, such
Investor represents that such Investor is familiar with Rule 144 of the U.S.
Securities and Exchange Commission (the "SEC"), as presently in effect, and
understands the resale limitations imposed thereby and by the 1933 Act.  Such
Investor understands that the Company is under no obligation to register any of
the securities sold hereunder except as provided in the Restated Rights
Agreement.  Such Investor understands that no public market now exists for any
of the Purchased Securities and that it is uncertain whether a public market
will ever exist for the Purchased Securities or the Conversion Shares.

          4.7  Further Limitations on Disposition.  Without in any way limiting
               ----------------------------------
the representations set forth above, such Investor further agrees not to make
any disposition of all or any portion of the Purchased Securities or the
Conversion Shares unless and until:

               (a)  there is then in effect a registration statement under the
1933 Act covering such proposed disposition and such disposition is made in
accordance with such registration statement; or

               (b)  such Investor shall have notified the Company of the
proposed disposition and shall have furnished the Company with a statement of
the circumstances surrounding the proposed disposition, and, if reasonably
requested by the Company, at the expense of such Investor or its transferee,
with an opinion of counsel, reasonably satisfactory to the Company, that such
disposition will not require registration of such securities under the 1933 Act.

Notwithstanding the provisions of paragraphs (a) and (b) above, no such
registration statement or opinion of counsel shall be required:  (i) for any
transfer of any Purchased Securities or Conversion Shares in compliance with SEC
Rule 144 or Rule 144A, or (ii) for any transfer of Purchased Securities or
Conversion Shares by an Investor that is a partnership, limited liability
company or corporation to (A) a partner of such partnership or member of such
limited liability company or shareholder of such corporation, (B) a retired
partner of such partnership who retires after the date hereof, (C) the estate of
any such partner, member or shareholder, or (iii) for the transfer by gift, will
or intestate succession by any Investor to his or her spouse or lineal
descendants or ancestors or any trust for any of the foregoing, or (iv) for any
transfer by Camelot to its affiliates if Camelot can reasonably demonstrate to
the Company that all such transfers are

                                       12
<PAGE>

being effected in compliance with all applicable securities laws and will not
jeopardize the exemptions from registration and/or qualification provisions of
all applicable securities laws upon which the Company is relying in selling the
Purchased Securities and Conversion Shares to Camelot; provided that in each of
                                                       --------
the foregoing cases the transferee agrees in writing to be subject to the terms
of this Section 4 (other than Section 4.5) to the same extent as if the
transferee were an original Investor hereunder.

          4.8  Legends.  It is understood that the certificates evidencing the
               -------
Purchased Securities and the Conversion Shares will bear the legends set forth
below:

               (a)  The securities represented hereby have not been registered
under the Securities Act of 1933, as amended (the "Act"), or under the
securities laws of certain states. These securities are subject to restrictions
on transferability and resale and may not be transferred or resold except as
permitted under the Act and the applicable state securities laws, pursuant to
registration or exemption therefrom. investors should be aware that they may be
required to bear the financial risks of this investment for an indefinite period
of time. The issuer of these securities may require an opinion of counsel in
form and substance satisfactory to the issuer to the effect that any proposed
transfer or resale is in compliance with the Act and any applicable state
securities laws.

               (b)  Any legends required by the laws of the State of Delaware
and any applicable state securities law, including a legend substantially in the
form of the following:

     The shares evidenced by this certificate: (1) are convertible into
     shares of common stock of the Company at the option of the holder at
     any time prior to automatic conversion thereof; (2) automatically
     convert into common stock of the Company in the event of a public
     offering meeting certain requirements or upon certain consents of the
     holders of the Company's preferred stock; and (3) are redeemable; all
     pursuant to and upon the terms and conditions specified in the
     Company's certificate of Incorporation. A copy of such certificate of
     Incorporation may be obtained, without charge, at the Company's
     principal office.

The legend set forth in (a) above shall be removed by the Company from any
certificate evidencing Purchased Securities or Conversion Shares upon delivery
to the Company of an opinion by counsel, reasonably satisfactory to the Company,
that a registration statement under the 1933 Act is at that time in effect with
respect to the legended security or that such security can be freely transferred
in a public sale without such a registration statement being in effect and that
such transfer will not jeopardize the exemption or exemptions from registration
pursuant to which the Company issued the Purchased Securities or Conversion
Shares.

     5.   CONDITIONS TO INVESTORS' OBLIGATIONS AT CLOSING.  The obligations of
          -----------------------------------------------
each Investor under Section 2 of this Agreement are subject to the fulfillment
or waiver, on or before the Closing, of each of the following conditions, the
waiver of which shall not be effective against any Investor who does not consent
to such waiver, which consent may be given by written, oral or telephonic
communication to the Company or its counsel:

                                       13
<PAGE>

          5.1  Representations and Warranties True.  Each of the representations
               -----------------------------------
and warranties of the Company contained in Section 3 shall be true and complete
on and as of the Closing with the same effect as though such representations and
warranties had been made on and as of the date of the Closing.

          5.2  Performance.  The Company shall have performed and complied with
               -----------
all agreements, obligations and conditions contained in this Agreement that are
required to be performed or complied with by it on or before the Closing and
shall have obtained all approvals, consents and qualifications necessary to
complete the purchase and sale described herein.

          5.3  Restated Certificate Effective.  The Restated Certificate shall
               ------------------------------
have been duly adopted by the Company by all necessary corporate action of its
Board of Directors and stockholders, and shall have been duly filed with and
accepted by the Secretary of State of the State of Delaware.

          5.4  Compliance Certificate.  The Company shall have delivered to each
               ----------------------
Investor at the Closing a certificate signed on its behalf by its President,
Chief Executive Officer, or Chief Financial Officer certifying that the
conditions specified in Sections 5.1, 5.2 and 5.3 have been fulfilled.

          5.5  Securities Exemptions.  The offer and sale of the Purchased
               ---------------------
Securities to the Investors pursuant to this Agreement shall be exempt from the
registration requirements of the 1933 Act, the qualification requirements of the
California Corporate Securities Law of 1968, as amended (the "Law") and the
registration and/or qualification requirements of all other applicable state
securities laws.

          5.6  Proceedings and Documents.  All corporate and other proceedings
               -------------------------
in connection with the transactions contemplated at the Closing and all
documents incident thereto shall be reasonably satisfactory in form and
substance to each Investor, and they shall each have received all such
counterpart originals and certified or other copies of such documents as they
may reasonably request.  Such documents shall include (but not be limited to)
the following:

               (a)  Certified Charter Documents. A copy of the Restated
                    ---------------------------
Certificate (certified by the Delaware Secretary of State) and a copy of the
Bylaws of the Company (as amended through the date of the Closing), each
certified by the Secretary or Assistant Secretary of the Company as true and
correct copies thereof as of the Closing.

               (b)  Corporate Actions. A copy of the resolutions of the Board of
                    -----------------
Directors and the stockholders of the Company evidencing the amendment to the
Company's Certificate of Incorporation providing for the authorization of the
Series B Stock, the Series B-1 Stock and the Warrant, the approval of this
Agreement and the Related Agreements, the issuance of the Purchased Securities
and the other matters contemplated hereby, each certified by the Secretary or
Assistant Secretary of the Company to be true and correct as of the Closing.

                                       14
<PAGE>

          5.7  Opinion of Company Counsel.  Each Investor shall have received an
               --------------------------
opinion from Fenwick & West LLP, counsel for the Company, dated as of the date
of the Closing, in the form attached hereto as Exhibit F.
                                               ---------

          5.8  Restated Rights Agreement.  The Company; Raj Jain, Raj Jain and
               -------------------------
Suzanne Marie Jain, as Trustees of the Jain Family Trust UDT, RSJ Investment
Partners, Nicholas W. Fergis, Ram and Ananthi Duraiswamy as Trustees of the
Duraiswamy Family Living Trust, Ram Duraiswamy as Trustee of Grantor Retained
Annuity Trust, and Ananthi Duraiswamy as Trustee of the Grantor Retained Annuity
Trust (the "Founders"); TA/Advent VIII L.P., Advent Atlantic & Pacific III L.P.,
TA Executives Fund LLC, and TA Investors LLC (the "TA Entities"); and each
Investor shall have executed and delivered the Amended and Restated Registration
Rights Agreement in the form attached to this Agreement as Exhibit G (the
                                                           ---------
"Restated Rights Agreement").

          5.9  Restated Stockholders' Agreement.  The Company, the Founders, the
               --------------------------------
TA Entities and each Investor shall have executed and delivered the Amended and
Restated Stockholders' Agreement in the form attached to this Agreement as
Exhibit H the "Restated Stockholders' Agreement").
---------

          5.10 Restated Voting Agreement.  The Company, the Founders, the TA
               -------------------------
Entities and each of the Investors shall have executed the Amended and Restated
Voting Agreement in the form attached to this Agreement as Exhibit I the
                                                           ---------
"Restated Voting Agreement").

          5.11 Minimum Shares Purchased.  Investors shall be purchasing at the
               ------------------------
Closing a number of Purchased Securities sufficient to result in at least
$12,000,000 in aggregate proceeds to the Company from such sale (including
cancellation of indebtedness of the Company).

          5.12 Existing Refusal Rights.  The Existing Refusal Rights (as defined
               -----------------------
in Section 3.2) as they apply to the issuance and sale of the Purchased
Securities shall have been waived and released in writing or shall have been
satisfied in full.

     6.   CONDITIONS TO THE COMPANY'S OBLIGATIONS AT CLOSING.  The obligations
          --------------------------------------------------
of the Company to each Investor under this Agreement are subject to the
fulfillment or waiver on or before the Closing of each of the following
conditions by such Investor:

          6.1  Representations and Warranties.  The representations and
               ------------------------------
warranties of such Investor contained in Section 4 shall be true and complete on
the date of the Closing with the same effect as though such representations and
warranties had been made on and as of the Closing.

          6.2  Payment of Purchase Price.  Each Investor shall have delivered to
               -------------------------
the Company the purchase price specified for such Investor on Exhibit A in
                                                              ---------
accordance with the provisions of Section 2.

                                       15
<PAGE>

          6.3  Restated Certificate Effective.  The Restated Certificate shall
               ------------------------------
have been duly adopted by the Company by all necessary corporate action of its
Board of Directors and stockholders, and shall have been duly filed with and
accepted by the Secretary of State of the State of Delaware.

          6.4  Securities Exemptions.  The offer and sale of the Purchased
               ---------------------
Securities to the Investors pursuant to this Agreement and the securities
issuable upon exercise of the Warrant shall be exempt from the registration
requirements of the 1933 Act, the qualifications requirements of the Law and the
registration and/or qualification requirements of all other applicable state
securities laws.

          6.5  Restated Rights Agreement.  The Company, the Founders, the TA
               -------------------------
Entities and each Investor shall have executed and delivered the Restated Rights
Agreement.

          6.6  Restated Stockholders' Agreement.  The Company, the Founders, the
               --------------------------------
TA Entities and each Investor shall have executed and delivered the Restated
Stockholders' Agreement.

          6.7  Restated Voting Agreement.  The Company, the Founders, the TA
               -------------------------
Entities and each of the Investors shall have executed the Restated Voting
Agreement.

          6.8  Proceedings and Documents.  All corporate and other proceedings
               -------------------------
in connection with the transactions contemplated at the Closing and all
documents incident thereto shall be reasonably satisfactory in form and
substance to the Company and to the Company's legal counsel, and the Company
shall have received all such counterpart originals and certified or other copies
of such documents as it may reasonably request.

          6.9  Minimum Shares Purchased.  Investors shall be purchasing at the
               ------------------------
Closing a number of Purchased Securities sufficient to result in at least
$12,000,000 in aggregate proceeds to the Company from such sale (including
cancellation of indebtedness of the Company).

          6.10 Existing Refusal Rights.  The Existing Refusal Rights (as defined
               -----------------------
in Section 3.2) as they apply to the issuance and sale of the Purchased
Securities shall have been waived and released in writing or shall have been
satisfied in full.

                                       16
<PAGE>

     7.   COVENANTS OF THE COMPANY.  The Company agrees with the Investors that
          ------------------------
it shall comply with the following covenants from and after the Closing except
as shall otherwise be expressly agreed pursuant to a written consent or consents
executed by Investors holding not less than a majority of the Series B Stock and
Conversion Shares held by the Investors as a group.  The following covenants
shall terminate immediately prior to the closing of the earliest to occur of the
following:  (a) the initial public offering of the Company's securities; (b) any
sale or exchange of the capital stock of the Company by the stockholders of the
Company in one transaction or series of related transactions where more than 50%
of the outstanding voting power of the Company is acquired by a person or entity
or group of related persons or entities; (c) any reorganization, consolidation
or merger of the Company where the outstanding voting securities of the Company
immediately before the transaction represent or are converted into less than
fifty percent (50%) of the outstanding voting power of the surviving entity (or
its parent corporation) immediately after the transaction; or (d) the sale or
exclusive license of all or substantially all of the Company's assets.

          7.1  Financial Statements.  The Company will maintain a system of
               --------------------
accounts in accordance with generally accepted accounting principles, keep full
and complete financial records and furnish to Investors holding at least 75,000
shares of Series B Stock and/or Series B-1 Stock and/or Conversion Shares the
following reports:  (a) within one hundred twenty (120) days after the end of
each fiscal year commencing with the year ending December 31, 2000, a copy of
the consolidated balance sheet of the Company as at the end of such year,
together with consolidated statements of income, retained earnings and cash
flows of the Company for such year, audited and certified by independent public
accountants of recognized national standing reasonably satisfactory to the Board
of Directors, prepared in accordance with generally accepted accounting
principles and practices consistently applied; and (b) within forty-five (45)
days after the end of each fiscal quarter commencing with the quarter ended
September 30, 2000, a consolidated unaudited balance sheet of the Company as at
the end of such quarter and unaudited statements of income for the Company for
such quarter and for the year to date, each of the foregoing balance sheets and
statements to set forth in comparative form the corresponding figures for the
prior fiscal period.

          7.2  Board of Directors.  The Company shall pay or reimburse a
               ------------------
director nominated only by the holders of Series B Stock and Series B-1 Stock
for his or her reasonable travel expenses incurred in connection with attending
meetings or other functions of the Board of Directors and committees thereof and
for other reasonable costs incurred by him or her in connection with any other
work on behalf of the Company (if such other reasonable costs are approved by
the chief executive officer or chief financial officer of the Company).

     8.   GENERAL PROVISIONS.
          ------------------

          8.1  Survival of Warranties.  The representations, warranties and
               ----------------------
covenants of the Company and the Investors contained in or made pursuant to this
Agreement shall survive the execution and delivery of this Agreement and the
Closing and shall in no way be affected by any investigation of the subject
matter thereof made by or on behalf of any of the Investors, their counsel or
the Company, as the case may be.

                                       17
<PAGE>

          8.2  Successors and Assigns.  Except as otherwise provided in this
               ----------------------
Agreement, this Agreement, and the rights and obligations of the parties
hereunder, will be binding upon and inure to the benefit of their respective
successors, assigns, heirs, executors, administrators and legal representatives.

          8.3  Governing Law.  This Agreement will be governed by and construed
               -------------
in accordance with the laws of the State of California, without giving effect to
that body of laws pertaining to conflict of laws.

          8.4  Counterparts.  This Agreement may be executed in any number of
               ------------
counterparts, each of which when so executed and delivered will be deemed an
original, and all of which together shall constitute one and the same agreement.

          8.5  Headings.  The headings and captions used in this Agreement are
               --------
used for convenience only and are not to be considered in construing or
interpreting this Agreement.  All references in this Agreement to sections,
paragraphs, exhibits and schedules shall, unless otherwise provided, refer to
sections and paragraphs hereof and exhibits and schedules attached hereto, all
of which exhibits and schedules are incorporated herein by this reference.

          8.6  Notices.  Any and all notices required or permitted to be given
               -------
to a party pursuant to the provisions of this Agreement will be in writing and
will be effective and deemed to provide such party sufficient notice under this
Agreement on the earliest of the following:  (i) at the time of personal
delivery, if delivery is in person; (ii) one (1) business day after deposit with
an express overnight courier for United States deliveries, or two (2) business
days after such deposit for deliveries outside of the United States, with proof
of delivery from the courier requested; or (iii) three (3) business days after
deposit in the United States mail by certified mail (return receipt requested)
for United States deliveries.

               All notices for delivery outside the United States will be sent
by express courier. All notices not delivered personally will be sent with
postage and/or other charges prepaid and properly addressed to the party to be
notified at the address as follows, or at such other address as such other party
may designate by one of the indicated means of notice herein to the other
parties hereto as follows:

               (a)  if to an Investor, at such Investor's respective address as
set forth on Exhibit A hereto.

               (b)  if to the Company, marked "Attention:  President", at 1314
Chesapeake Terrace, Sunnyvale, CA  94089.

          8.7  No Finder's Fees.  Each party represents that it neither is nor
               ----------------
will be obligated for any finder's or broker's fee or commission in connection
with this transaction, except that the Company may be obligated to pay finder's
or broker's fees as set forth on the Schedule of Exceptions.  Each Investor
agrees to indemnify and to hold harmless the Company from any liability for any
commission or compensation in the nature of a finder's or broker's fee (and any
asserted liability) for which the Investor or any of its officers, partners,
employees, or

                                       18
<PAGE>

representatives is responsible. The Company agrees to indemnify and hold
harmless each Investor from any liability for any commission or compensation in
the nature of a finder's or broker's fee (and any asserted liability) for which
the Company or any of its officers, employees or representatives is responsible.

          8.8  Costs, Expenses.  The Company shall pay in connection with the
               ---------------
preparation, execution and delivery of this Agreement and the issuance of the
Purchased Securities, the fees and out-of-pocket expenses of Miro Weiner &
Kramer and Kirkland & Ellis, special counsels to the Investors, with respect
thereto, such fees and expenses not to exceed Twenty-Five Thousand Dollars
($25,000.00) in the aggregate.

          8.9  Amendments and Waivers. Any term of this Agreement may be amended
               ----------------------
and the observance of any term of this Agreement may be waived (either generally
or in a particular instance and either retroactively or prospectively), only
with the written consent of the Company and the holders of Purchased Securities
and/or Conversion Shares representing at least a majority of the total votes to
which such holders are entitled on account of their Purchased Securities and/or
Conversion Shares as determined in accordance with the provisions of the
Restated Certificate (excluding any of such shares that have been sold to the
public or pursuant to SEC Rule 144).  Any amendment or waiver effected in
accordance with this Section shall be binding upon each holder of any Purchased
Securities and/or Conversion Shares at the time outstanding, each future holder
of such securities, and the Company; provided, however, that no condition set
                                     --------  -------
forth in Section 5 may be waived with respect to any Investor who does not
consent thereto.  No delay or failure to require performance of any provision of
this Agreement shall constitute a waiver of that provision as to that or any
other instance.  No waiver granted under this Agreement as to any one provision
herein shall constitute a subsequent waiver of such provision or of any other
provision herein, nor shall it constitute the waiver of any performance other
than the actual performance specifically waived.

          8.10 Severability.  If any provision of this Agreement is determined
               ------------
by any court or arbitrator of competent jurisdiction to be invalid, illegal or
unenforceable in any respect, such provision will be enforced to the maximum
extent possible given the intent of the parties hereto.  If such clause or
provision cannot be so enforced, such provision shall be stricken from this
Agreement and the remainder of this Agreement shall be enforced as if such
invalid, illegal or unenforceable clause or provision had (to the extent not
enforceable) never been contained in this Agreement.  Notwithstanding the
forgoing, if the value of this Agreement based upon the substantial benefit of
the bargain for any party is materially impaired, which determination as made by
the presiding court or arbitrator of competent jurisdiction shall be binding,
then both parties agree to substitute such provision(s) through good faith
negotiations.

          8.11 Entire Agreement.  This Agreement, the Related Agreements and the
               ----------------
documents referred to herein, together with all the Exhibits hereto, constitute
the entire agreement and understanding of the parties with respect to the
subject matter of this Agreement, and supersede any and all prior understandings
and agreements, whether oral or written, between or among the parties hereto
with respect to the specific subject matter hereof (including, without

                                       19
<PAGE>

limitation, all terms of that certain letter agreement dated September 27, 2000,
by and between the Company and Camelot Ventures, LLC).

          8.12 Further Assurances.  The parties agree to execute such further
               ------------------
documents and instruments and to take such further actions as may be reasonably
necessary to carry out the purposes and intent of this Agreement.

          8.13 Adjustments for Stock Splits, Etc.  Wherever in this Agreement
               ----------------------------------
there is a reference to a specific number of shares of Common Stock or Preferred
Stock of the Company of any class or series, then, upon the occurrence of any
subdivision, combination or stock dividend of such class or series of stock, the
specific number of shares so referenced in this Agreement shall automatically be
proportionally adjusted to reflect the affect on the outstanding shares of such
class or series of stock by such subdivision, combination or stock dividend.

          8.14 Facsimile Signatures.  This Agreement may be executed and
               --------------------
delivered by facsimile and upon such delivery the facsimile signature will be
deemed to have the same effect as if the original signature had been delivered
to the other party.

          8.15 Third Parties.  Nothing in this Agreement, express or implied, is
               -------------
intended to confer upon any person, other than the parties hereto and their
successors and assigns, any rights or remedies under or by reason of this
Agreement.

          8.16 Waiver of Notice.  The Investors hereby waive any rights to
               ----------------
notice of, and any rights to purchase with respect to the issuance of the
Purchased Securities and all securities directly and indirectly issuable on
account thereof contained in Article III of that certain Stockholders' Agreement
dated as of June 11, 1999, by and among the Company and certain investors and
stockholders of the Company.  Such waiver is given on behalf of the Investors
and all other persons or entities that may possess such rights of first refusal
pursuant to such agreement.

          8.17 Costs And Attorneys' Fees.  In the event that any action, suit or
               -------------------------
other proceeding is instituted concerning or arising out of this Agreement or
any transaction contemplated hereunder, the prevailing party shall recover all
of such party's costs and attorneys' fees incurred in each such action, suit or
other proceeding, including any and all appeals or petitions therefrom.

          8.18 Waiver of Conflict of Interest.  F&W Investments LLC, an
               ------------------------------
affiliate of Fenwick & West LLP, may invest as an Investor under the terms of
this Agreement.  By signing this Agreement, each Investor and the Company hereby
acknowledges that the terms of this Agreement were negotiated between the
Investors and the Company and are fair and reasonable and consents to the
investment by F&W Investments LLC.  Each Investor and the Company further
represents that it has had the opportunity to be, or has been, represented by
independent counsel in giving the waivers contained in this Section 8.18.

               [Remainder of this page intentionally left blank]

                                       20
<PAGE>

     In Witness Whereof, the parties hereto have executed this Securities
Purchase Agreement as of the date first written above.

THE COMPANY:
-----------

Kintana, Inc.

By:/s/ Paul McFeeters
   -----------------------------------
   Paul McFeeters
   Chief Financial Officer

                        SIGNATURE PAGE TO KINTANA, INC
                         SECURITIES PURCHASE AGREEMENT
<PAGE>

          In Witness Whereof, the parties hereto have executed this Securities
Purchase Agreement as of the date first written above.

INVESTORS:
---------

Camelot Ventures/Kintana,  L.L.C.

By: /s/ David Katzman
   ----------------------------

Name:   David Katzman
     --------------------------

Title:    President
      -------------------------

                        SIGNATURE PAGE TO KINTANA, INC
                         SECURITIES PURCHASE AGREEMENT
<PAGE>

     In Witness Whereof, the parties hereto have executed this Securities
Purchase Agreement as of the date first written above.

INVESTORS:
---------

By: /s/ Bryan E. Plug
   ----------------------------
        Bryan E. Plug

                        SIGNATURE PAGE TO KINTANA, INC
                         SECURITIES PURCHASE AGREEMENT
<PAGE>

     In Witness Whereof, the parties hereto have executed this Securities
Purchase Agreement as of the date first written above.

INVESTORS:
---------

TA/Advent VIII L.P.
By:  TA Associates VIII LLC, its General Partner
By:  TA Associates, Inc., its Manager

By: /s/ Kurt Jaggers
   -----------------------------
     Kurt Jaggers

Advent Atlantic & Pacific III L.P.
By:  TA Associates AAP III Partners, its General Partner
By:  TA Associates, Inc., its General Partner

By: /s/ Kurt Jaggers
   -----------------------------
     Kurt Jaggers

TA Executives Fund LLC
By:  TA Associates, Inc., its Manager

By: /s/ Kurt Jaggers
   -----------------------------
     Kurt Jaggers

TA Investors LLC
By:  TA Associates, Inc., its Manager

By: /s/ Kurt Jaggers
   -----------------------------
     Kurt Jaggers

                        SIGNATURE PAGE TO KINTANA, INC
                         SECURITIES PURCHASE AGREEMENT

     In Witness Whereof, the parties hereto have executed this Securities
Purchase Agreement as of July 6, 2001, as amended by that certain Amendment to
Securities Purchase Agreement dated April 5, 2001, that certain Second Amendment
to Securities Purchase Agreement dated June 20, 2001, and that certain Third
Amendment to Securities Purchase Agreement dated June 26, 2001.

INVESTORS:
----------

MCP Global Corp. Ltd.

By: /s/ Mai N. Pogue
   --------------------------
Name:  Mai N. Pogue
     ------------------------
Its:   Director
    -------------------------

Coditec International Ltd.

By: /s/ Mai N. Pogue
   --------------------------
Name:  Mai N. Pogue
     ------------------------
Its:   Investment Manager
    -------------------------

        SIGNATURE PAGE TO KINTANA, INC., SECURITIES PURCHASE AGREEMENT

     In Witness Whereof, the parties hereto have executed this Securities
Purchase Agreement as of the date first written above.

INVESTORS:
---------

Seligman New Technologies Fund II, Inc.

By:  J. & W. Seligman & Co. Incorporated, its investment advisor

By:    /s/ Storm Boswick
   --------------------------
Name:  Storm Boswick
     ------------------------
Title: Managing Director
      -----------------------

Seligman Technologies Venture Fund LLC

By:  J. & W. Seligman & Co. Incorporated, its investment advisor

By:    /s/ Storm Boswick
   --------------------------
Name:  Storm Boswick
     ------------------------
Title: Managing Director
      -----------------------

        SIGNATURE PAGE TO KINTANA, INC., SECURITIES PURCHASE AGREEMENT

     In Witness Whereof, the parties hereto have executed this Securities
Purchase Agreement as of the date first written above.

INVESTORS:
---------

Fenwick & West Investments LLC

By:     /s/ Laird H. Simons

Name:   Laird H. Simons

Title:  Partner

     In Witness Whereof, the parties hereto have executed this Securities
Purchase Agreement as of the date first written above.

INVESTORS:
---------

U.S. Bancorp Piper Jaffray ECM Fund I, LLC

By:     /s/ illegible

Name:   illegible

Title:  Partner

U.S. Bancorp Piper Jaffray ECM Fund I - Investors 02, LLC

By:     /s/ illegible

Name:   illegible

Title:  Partner

     In Witness Whereof, the parties hereto have executed this Securities
Purchase Agreement as of the date first written above.

INVESTORS:
---------

DRW Venture Partners LP

By:     /s/ Mary Zimmer

Name:   Mary Zimmer

Its:    Director, DRW Finance and Administration

<PAGE>

     In Witness Whereof, the parties hereto have executed this Securities
Purchase Agreement as of June 28, 2001, as amended by that certain Amendment to
Securities Purchase Agreement dated April 5, 2001, that certain Second Amendment
to Securities Purchase Agreement dated June 20, 2001, and that certain Third
Amendment to Securities Purchase Agreement dated June 26, 2001.

INVESTORS:
---------

Granite Global Ventures L.P.
By: Granite Global Ventures, L.L.C., its General Partner

By: /s/ Hany Nada
   ------------------------------------
        Hany Nada, Managing Director

         SIGNATURE PAGE TO KINTANA, INC. SECURITIES PURCHASE AGREEMENT
<PAGE>

                         SECURITIES PURCHASE AGREEMENT

                               LIST OF EXHIBITS
                               ----------------

     Exhibit A   -   Schedule of Investors
     Exhibit B   -   Restated Certificate of Incorporation
     Exhibit C   -   Schedule of Exceptions
     Exhibit D   -   Employment Agreement
     Exhibit E   -   Financial Statements
     Exhibit F   -   Opinion of Company Counsel
     Exhibit G   -   Restated Rights Agreement
     Exhibit H   -   Restated Stockholders' Agreement
     Exhibit I   -   Restated Voting Agreement
     Exhibit J   -   Warrant to Camelot
     Exhibit K   -   Board Observation Side Letter
     Exhibit L   -   SBA Side Letter
<PAGE>

                                   EXHIBIT A

                             Schedule of Investors
                             ---------------------

<PAGE>

                                   EXHIBIT B

                     Restated Certificate of Incorporation

<PAGE>

                                   EXHIBIT C

                             Schedule of Exceptions
<PAGE>

                                   EXHIBIT D

                    Employee Invention Assignment Agreement
<PAGE>

                                   EXHIBIT E

                              Financial Statements
<PAGE>

                                   EXHIBIT F

                           Opinion of Company Counsel
<PAGE>

                                   EXHIBIT G

                           Restated Rights Agreement
<PAGE>

                                   EXHIBIT H

                        Restated Stockholders' Agreement
<PAGE>

                                   EXHIBIT I

                           Restated Voting Agreement
<PAGE>

                                   EXHIBIT J

                               Warrant to Camelot
<PAGE>

                                   EXHIBIT K

                         Board Observation Side Letter
<PAGE>

                                   EXHIBIT L

                                SBA Side Letter
<PAGE>

                                 AMENDMENT TO
                         SECURITIES PURCHASE AGREEMENT

     This Amendment to the Securities Purchase Agreement (the "Amendment") is
made and entered into as of April 5, 2001 by and among Kintana, Inc., a Delaware
corporation (the "Company"), and the parties listed on the Schedule of Investors
attached to this Amendment as Exhibit A (each hereinafter individually referred
                              ---------
to as an "Investor" and collectively referred to as the "Investors").
Capitalized terms not defined herein shall have the meanings ascribed to them in
the Agreement (as defined below).

                                R E C I T A L S
                                - - - - - - - -

     A.  The Company and the Investors are parties to that certain Securities
Purchase Agreement dated November 15, 2000 (the "Agreement").

     B.  The Company the Investors desire to amend the Agreement to facilitate
the sale by the Company of additional shares of its Series B Stock and Series B-
1 Stock pursuant to the Agreement.

     NOW, THEREFORE, in consideration of the foregoing recitals, the Company and
the Investors hereby agree as follows:

     1.  Section 2.2(a) of the Agreement is hereby amended to read in its
entirety:

         (a) Conditions of Additional Closing(s).  At any time and from time to
             -----------------------------------
     time immediately following the Closing until 5:00 p.m. Pacific Time on May
     15, 2001 (the "Additional Closing Period"), the Company may, at one or more
     additional closings (each an "Additional Closing"), without obtaining the
     signature, consent or permission of any of the Investors, offer and sell to
     other investors (the "New Investors"), at a price of $6.95 per share,
     additional shares of Series B Stock and/or Series B-1 Stock; provided,
                                                                  --------
     however, that the number of shares of Series B Stock and/or Series B-1
     -------
     Stock that may be so sold may not exceed the lesser of (i) the aggregate
     number of shares of Series B Stock and Series B-1 Stock authorized by the
     Restated Certificate and (ii) (3,597,123); less in each case (A) the
     aggregate number of shares of Series B Stock and Series B-1 Stock actually
     issued and sold by the Company at the Closing and prior Additional
     Closings, (B) the number of shares of Series B Stock issued upon exercise
     of the Warrant, and (C) the number of shares of Series B Stock then subject
     to the unexercised portion of the Warrant.  New Investors may include
     persons or entities who are already Investors under this Agreement.

     2.  All other provisions of the Agreement shall remain in full force and
     effect.

     This Amendment may be executed in any number of counterparts, each of which
when so executed and delivered will be deemed an original, and all such
counterparts together will constitute one and the same agreement.

              [Remainder of this page intentionally left blank.]
<PAGE>

     In Witness Whereof, the parties hereto have executed this Amendment to
Securities Purchase Agreement as of the date first written above.

THE COMPANY:
-----------

Kintana, Inc.

By: /s/ Paul McFeeters
   -------------------------
   Paul McFeeters
   Chief Financial Officer

                        SIGNATURE PAGE TO KINTANA, INC.
                  AMENDMENT TO SECURITIES PURCHASE AGREEMENT
<PAGE>

     In Witness Whereof, the parties hereto have executed this Amendment to
Securities Purchase Agreement as of the date first written above.

INVESTORS:
---------

Camelot Ventures/Kintana, L.L.C.

By: /s/ David Katzman
   -------------------------------

Name:   David Katzman
     -----------------------------

Title:  Member
      ----------------------------

                        SIGNATURE PAGE TO KINTANA, INC.
                  AMENDMENT TO SECURITIES PURCHASE AGREEMENT
<PAGE>

     In Witness Whereof, the parties hereto have executed this Amendment to
Securities Purchase Agreement as of the date first written above.

INVESTORS:
---------

By: /s/ Bryan E. Plug
   -------------------------
        Bryan E. Plug

                        SIGNATURE PAGE TO KINTANA, INC.
                  AMENDMENT TO SECURITIES PURCHASE AGREEMENT
<PAGE>

     In Witness Whereof, the parties hereto have executed this Amendment to
Securities Purchase Agreement as of the date first written above.

INVESTORS:
---------

TA/Advent VIII L.P.
By:  TA Associates VIII LLC, its General Partner
By:  TA Associates, Inc., its Manager

By: /s/ Kurt Jaggers
   -----------------------------------
        Kurt Jaggers

Advent Atlantic & Pacific III L.P.
By:  TA Associates AAP III Partners, its General Partner
By:  TA Associates, Inc., its General Partner

By: /s/ Kurt Jaggers
   -----------------------------------
        Kurt Jaggers

TA Executives Fund LLC
By:  TA Associates, Inc., its Manager

By: /s/ Kurt Jaggers
   -----------------------------------
        Kurt Jaggers

TA Investors LLC
By:  TA Associates, Inc., its Manager

By: /s/ Kurt Jaggers
   -----------------------------------
        Kurt Jaggers

                        SIGNATURE PAGE TO KINTANA, INC.
                  AMENDMENT TO SECURITIES PURCHASE AGREEMENT
<PAGE>

                                   EXHIBIT A

                             Schedule of Investors
                             ---------------------
<PAGE>

                              SECOND AMENDMENT TO
                         SECURITIES PURCHASE AGREEMENT

     This Second Amendment to Securities Purchase Agreement (this "Amendment")
is made and entered into as of June 20, 2001 by and among Kintana, Inc., a
Delaware corporation (the "Company"), and the parties listed on the Schedule of
Investors attached to this Amendment as Exhibit A (each hereinafter individually
                                        ---------
referred to as an "Investor" and collectively referred to as the "Investors").
Capitalized terms not defined herein shall have the meanings ascribed to them in
the Agreement (as defined below).

                                R E C I T A L S
                                - - - - - - - -

     A.  The Company and the Investors are parties to that certain Securities
Purchase Agreement dated November 15, 2000, as amended by that certain Amendment
to Securities Purchase Agreement dated April 5, 2001 (such agreement as so
amended, the "Agreement").

     B.  The Company the Investors desire to amend the Agreement to facilitate
the sale by the Company of additional shares of its Series B Stock and Series B-
1 Stock pursuant to the Agreement until July 31, 2001.

     NOW, THEREFORE, in consideration of the foregoing recitals, and for other
consideration, the adequacy of which is hereby acknowledged, the Company and the
Investors hereby agree as follows:

     1.  Section 2.2(a) of the Agreement is hereby amended to read in its
     entirety:

         (a)  Conditions of Additional Closing(s). At any time and from time to
              -----------------------------------
     time immediately following the Closing until 5:00 p.m. Pacific Time on July
     31, 2001 (the "Additional Closing Period"), the Company may, at one or more
     additional closings (each an "Additional Closing"), without obtaining the
     signature, consent or permission of any of the Investors, offer and sell to
     other investors (the "New Investors"), at a price of $6.95 per share,
     additional shares of Series B Stock and/or Series B-1 Stock; provided,
                                                                  --------
     however, that the number of shares of Series B Stock and/or Series B-1
     -------
     Stock that may be so sold may not exceed the lesser of (i) the aggregate
     number of shares of Series B Stock and Series B-1 Stock authorized by the
     Restated Certificate and (ii) (3,597,123); less in each case the aggregate
     number of shares of Series B Stock and Series B-1 Stock actually issued and
     sold by the Company at the Closing and prior Additional Closings. New
     Investors may include persons or entities who are already Investors under
     this Agreement.

     2.  The provisions of this Amendment will be effective upon the execution
hereof of sufficient parties to amend the Agreement.

     3.  All other provisions of the Agreement shall remain in full force and
effect.

     4.  This Amendment may be executed in any number of counterparts, each of
which when so executed and delivered will be deemed an original, and all such
counterparts together will constitute one and the same agreement.

              [Remainder of this page intentionally left blank.]
<PAGE>

     In Witness Whereof, the parties hereto have executed this Second Amendment
to Securities Purchase Agreement as of the date first written above.

THE COMPANY:
-----------

Kintana, Inc.

By:  /s/ Paul McFeeters
    -----------------------------
     Paul McFeeters
     Chief Financial Officer

                        SIGNATURE PAGE TO KINTANA, INC.
               SECOND AMENDMENT TO SECURITIES PURCHASE AGREEMENT
<PAGE>

     In Witness Whereof, the parties hereto have executed this Second Amendment
to Securities Purchase Agreement as of the date first written above.

INVESTORS:
---------

Seligman New Technologies Fund II, Inc.

     /s/ Thomas P. Hirschfeld
By: _____________________________________
         Thomas P. Hirschfeld
Name: ___________________________________
         Managing Director, Venture Capital Investments
Title: ________________________________________________

Seligman Technologies Venture Fund LLC

     /s/ Thomas P. Hirschfeld
By: _____________________________________
         Thomas P. Hirschfeld
Name: ___________________________________
         Managing Director, Venture Capital Investments
Title: ________________________________________________

                        SIGNATURE PAGE TO KINTANA, INC.
               SECOND AMENDMENT TO SECURITIES PURCHASE AGREEMENT
<PAGE>

     In Witness Whereof, the parties hereto have executed this Second Amendment
to Securities Purchase Agreement as of the date first written above.

INVESTORS:
---------

Camelot Ventures/Kintana, L.L.C.

     /s/ David Katzman
By: _________________________________
         David Katzman
Name: _______________________________
         Manager
Title: ______________________________

                        SIGNATURE PAGE TO KINTANA, INC.
               SECOND AMENDMENT TO SECURITIES PURCHASE AGREEMENT
<PAGE>

     In Witness Whereof, the parties hereto have executed this Second Amendment
to Securities Purchase Agreement as of the date first written above.

INVESTORS:
---------

By:  /s/ Bryan Plug
    ----------------------
        Bryan E. Plug

                        SIGNATURE PAGE TO KINTANA, INC.
               SECOND AMENDMENT TO SECURITIES PURCHASE AGREEMENT
<PAGE>

     In Witness Whereof, the parties hereto have executed this Second Amendment
to Securities Purchase Agreement as of the date first written above.

INVESTORS:
---------

TA/Advent VIII L.P.
By:  TA Associates VIII LLC, its General Partner
By:  TA Associates, Inc., its Manager

By:  /s/ Kurt Jaggers
    ---------------------------------------
     Kurt Jaggers

Advent Atlantic & Pacific III L.P.
By:  TA Associates AAP III Partners, its General Partner
By:  TA Associates, Inc., its General Partner

By:  /s/ Kurt Jaggers
    ---------------------------------------
     Kurt Jaggers

TA Executives Fund LLC
By:  TA Associates, Inc., its Manager

By:  /s/ Kurt Jaggers
    ---------------------------------------
     Kurt Jaggers

TA Investors LLC
By:  TA Associates, Inc., its Manager

By:  /s/ Kurt Jaggers
    ---------------------------------------
     Kurt Jaggers

                        SIGNATURE PAGE TO KINTANA, INC.
               SECOND AMENDMENT TO SECURITIES PURCHASE AGREEMENT
<PAGE>

     In Witness Whereof, the parties hereto have executed this Second Amendment
to Securities Purchase Agreement as of the date first written above.

INVESTORS:
---------

F&W Investments LLC

By:  /s/ Laird Simons
    ------------------------------
     Laird H. Simons, III, Member

                        SIGNATURE PAGE TO KINTANA, INC.
               SECOND AMENDMENT TO SECURITIES PURCHASE AGREEMENT
<PAGE>

In Witness Whereof, the parties hereto have executed this Second Amendment to
Securities Purchase Agreement as of the first date written above.

DRW Venture Partners LP

By:   /s/ Mary Zimmer
     _____________________
Name: Mary Zimmer
     _____________________
Its:  Director, DRW Finance and Administration
     _________________________________________

                        SIGNATURE PAGE TO KINTANA, INC.
               SECOND AMENDMENT TO SECURITIES PURCHASE AGREEMENT
<PAGE>

                              THIRD AMENDMENT TO
                         SECURITIES PURCHASE AGREEMENT

     This Third Amendment to Securities Purchase Agreement (this "Amendment") is
made and entered into as of June 26, 2001 by and among Kintana, Inc., a Delaware
corporation (the "Company"), and the parties listed on the Schedule of Investors
attached to this Amendment as Exhibit A (each hereinafter individually referred
                              ---------
to as an "Investor" and collectively referred to as the "Investors").
Capitalized terms not defined herein shall have the meanings ascribed to them in
the Agreement (as defined below).

                                R E C I T A L S
                                - - - - - - - -

     A.   The Company and the Investors are parties to that certain Securities
Purchase Agreement dated November 15, 2000, as amended by both that certain
Amendment to Securities Purchase Agreement dated April 5, 2001 and that certain
Second Amendment to Securities Purchase Agreement dated June 20, 2001 (such
agreement as so amended, the "Agreement").

     B.   The Company and the Investors desire to amend the Agreement to
increase the number of additional shares of its Series B Stock and Series B-1
Stock that may be sold by the Company pursuant to the Agreement until July 31,
2001.

     NOW, THEREFORE, in consideration of the foregoing recitals, and for other
consideration, the adequacy of which is hereby acknowledged, the Company and the
Investors hereby agree as follows:

     1.   Section 2.2(a) of the Agreement is hereby amended to read in its
entirety:

          (a)  Conditions of Additional Closing(s). At any time and from time to
               -----------------------------------
     time immediately following the Closing until 5:00 p.m. Pacific Time on July
     31, 2001 (the "Additional Closing Period"), the Company may, at one or more
     additional closings (each an "Additional Closing"), without obtaining the
     signature, consent or permission of any of the Investors, offer and sell to
     other investors (the "New Investors"), at a price of $6.95 per share,
     additional shares of Series B Stock and/or Series B-1 Stock; provided,
                                                                  --------
     however, that the number of shares of Series B Stock and/or Series B-1
     -------
     Stock that may be so sold may not exceed 4,316,547, less the aggregate
     number of shares of Series B Stock and Series B-1 Stock actually issued and
     sold by the Company at the Closing and prior Additional Closings. New
     Investors may include persons or entities who are already Investors under
     this Agreement.

     2.   The provisions of this Amendment will be effective upon the execution
hereof of sufficient parties to amend the Agreement.

     3.   All other provisions of the Agreement shall remain in full force and
effect.

     4.   This Amendment may be executed in any number of counterparts, each of
which when so executed and delivered will be deemed an original, and all such
counterparts together will constitute one and the same agreement.

               [Remainder of this page intentionally left blank.]
<PAGE>

     In Witness Whereof, the parties hereto have executed this Third Amendment
to Securities Purchase Agreement as of the date first written above.

THE COMPANY:
-----------

Kintana, Inc.

By: /s/ Paul McFeeters
   -------------------------------
   Paul McFeeters
   Chief Financial Officer

                        SIGNATURE PAGE TO KINTANA, INC.
                THIRD AMENDMENT TO SECURITIES PURCHASE AGREEMENT
<PAGE>

     In Witness Whereof, the parties hereto have executed this Third Amendment
to Securities Purchase Agreement as of the date first written above.

INVESTORS:
---------

Seligman New Technologies Fund II, Inc.

By: /s/ Thomas P. Hirschfeld
    --------------------------------------------------
Name:   Thomas P. Hirschfeld
      ------------------------------------------------
Title:  Managing Director, Venture Capital Investments
       -----------------------------------------------

Seligman Technologies Venture Fund LLC

By: /s/ Thomas P. Hirschfeld
    --------------------------------------------------
Name:   Thomas P. Hirschfeld
      ------------------------------------------------
Title:  Managing Director, Venture Capital Investments
       -----------------------------------------------

                        SIGNATURE PAGE TO KINTANA, INC.
               THIRD AMENDMENT TO SECURITIES PURCHASE AGREEMENT
<PAGE>

     In Witness Whereof, the parties hereto have executed this Third Amendment
to Securities Purchase Agreement as of the date first written above.

INVESTORS:
---------

Camelot Ventures/Kintana, L.L.C.

By:     /s/ David Katzman
    ---------------------------------
Name:   David Katzman
      -------------------------------
Title:  Manager
       ------------------------------

                        SIGNATURE PAGE TO KINTANA, INC.
               THIRD AMENDMENT TO SECURITIES PURCHASE AGREEMENT
<PAGE>

     In Witness Whereof, the parties hereto have executed this Third Amendment
to Securities Purchase Agreement as of the date first written above.

INVESTORS:
---------

By: /s/ Bryan Plug
   ---------------------------------
        Bryan E. Plug

                        SIGNATURE PAGE TO KINTANA, INC.
               THIRD AMENDMENT TO SECURITIES PURCHASE AGREEMENT
<PAGE>

     In Witness Whereof, the parties hereto have executed this Third Amendment
to Securities Purchase Agreement as of the date first written above.

INVESTORS:
---------

TA/Advent VIII L.P.
By:  TA Associates VIII LLC, its General Partner
By:  TA Associates, Inc., its Manager

By:  Kurt Jaggers
    -------------------------------------
     Kurt Jaggers

Advent Atlantic & Pacific III L.P.
By:  TA Associates AAP III Partners, its General Partner
By:  TA Associates, Inc., its General Partner

By:  Kurt Jaggers
    -------------------------------------
     Kurt Jaggers

TA Executives Fund LLC
By:  TA Associates, Inc., its Manager

By:  Kurt Jaggers
    -------------------------------------
     Kurt Jaggers

TA Investors LLC
By:  TA Associates, Inc., its Manager

By:  Kurt Jaggers
    -------------------------------------
     Kurt Jaggers

                        SIGNATURE PAGE TO KINTANA, INC.
               THIRD AMENDMENT TO SECURITIES PURCHASE AGREEMENT
<PAGE>

     In Witness Whereof, the parties hereto have executed this Third Amendment
to Securities Purchase Agreement as of the date first written above.

INVESTORS:
---------

F&W Investments LLC

By:  /s/ Laird Simons
    --------------------------------
     Laird H. Simons, III, Member

                        SIGNATURE PAGE TO KINTANA, INC.
               THIRD AMENDMENT TO SECURITIES PURCHASE AGREEMENT
<PAGE>

     In Witness Whereof, the parties hereto have executed this Third Amendment
to Securities Purchase Agreement as of the date first written above.

INVESTORS:
---------

U.S. Bancorp Piper Jaffray ECM Fund I, LLC

By:__________________________________

Name:________________________________

Title:_______________________________

U.S. Bancorp Piper Jaffray ECM Fund I - Investors 02, LLC

By:     /s/ [ILLEGIBLE]
   ----------------------------------

Name:   [ILLEGIBLE]
     --------------------------------

Title:  Partner
      -------------------------------

                        SIGNATURE PAGE TO KINTANA, INC.
               THIRD AMENDMENT TO SECURITIES PURCHASE AGREEMENT
<PAGE>

     In Witness Whereof, the parties hereto have executed this Third Amendment
to Securities Purchase Agreement as of the first date written above.

INVESTORS:
---------

DRW Venture Partners LP

By:   Mary Zimmer
    --------------------------------------------

Name:   /s/ Mary Zimmer
      ------------------------------------------

Title:  Director, DRW Finance and Administration
       -----------------------------------------

                        SIGNATURE PAGE TO KINTANA, INC.
               THIRD AMENDMENT TO SECURITIES PURCHASE AGREEMENT

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