Document:

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                                                                   Exhibit 10.1
                                                                   ------------

                           ASSET PURCHASE AGREEMENT

         This Asset Purchase Agreement, dated as of November 9, 2001 (this
"AGREEMENT" which term includes the Disclosure Schedule and other schedules and
the exhibits hereto), is made by and between Gensym Corporation, a Delaware
corporation ("Seller"), and Rocket Software, Inc., a Massachusetts corporation
("Purchaser").

                                    RECITALS

         A. The parties desire that Seller sell and Purchaser purchase all of
the assets of Seller comprising the NetCure product line and related products
and business and assume certain liabilities of Seller relating thereto, on and
subject to the terms and conditions set forth in this Agreement.

         B. Certain terms used herein are defined in Section 9.2 of this
Agreement or elsewhere in this Agreement.

                                    AGREEMENT

         NOW, THEREFORE, in consideration of the foregoing recitals and the
representations, warranties, covenants and agreements herein set forth, Seller
and Purchaser, intending to be legally bound, agree as follows:

SECTION 1.        PURCHASE AND SALE OF ASSETS.

      1.1         PURCHASE AND SALE OF ASSETS.

                  (a) Subject to the terms and conditions of this Agreement,
on the Closing Date Seller shall sell, transfer, convey, assign and deliver
to Purchaser, and Purchaser shall purchase, acquire and accept from Seller,
all right, title and interest in and to all assets and properties (whether
tangible or intangible), used in or associated in a material way with the
NetCure version 1.0, NetCure version 2.0, NetSleuth or Xmap/BizCure product
lines and all related goodwill (collectively, the "NETCURE BUSINESS"),
whether or not reflected on Seller's financial statements or books, and
whether or not carried in the name of Seller, free and clear of all
Encumbrances other than Permitted Encumbrances (collectively, the "PURCHASED
ASSETS,"), provided that Seller shall retain and not transfer to Purchaser
the Excluded Assets. The Purchased Assets shall include, without limitation,
the following assets and properties:

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                  (i) All source code, object code and documentation for the
         following components: (A) NetCure (including but not limited to the
         Java-based "Denali" software included in NetCure), with on-line
         documentation (NetCure version 1.0 and NetCure version 2.0 and baseline
         source tree, branches and history of shipping products), Build/Make
         scripts, all training materials and QA Test Plan and procedures
         relating thereto; (B) NetSleuth, with on-line documentation, all
         training materials and QA Test Plan and procedures relating thereto;
         and (C) BizCure (project name = X-map) prototype (never released);

                  (ii) All marketing and collateral materials for the NetCure
         Business (including but not limited to the NetCure and NetSleuth
         products, including CD liner notes);

                  (iii) All slides, presentations and sales kits for the NetCure
         and NetSleuth products;

                  (iv) The patents and patent applications, trademarks and
         trademark applications, copyrights and other registered Intellectual
         Property Rights described on Schedule 1.1(a)(iv) hereto;

                  (v) All rights, title and interest of Seller to and under the
         contracts, agreements and arrangements described on Schedule 1.1(a)(v)
         hereto (collectively, the "ASSIGNED THIRD PARTY LICENSE AGREEMENTS");

                  (vi) All rights, title and interest of Seller to and under the
         contracts, agreements and arrangements described on Schedule 1.1(a)(vi)
         hereto (collectively, the "CUSTOMER AGREEMENTS");

                  (vii) The tangible personal property described on Schedule
         1.1(a)(vii) hereto (the "TANGIBLE PERSONAL PROPERTY"), which
         constitutes all tangible personal property used principally in the
         development, testing, manufacture, support or maintenance of the
         NetCure Business;

                  (viii) All rights, claims, credits, causes of action or rights
         of set-off with respect to or arising out of the Purchased Assets or
         the Assumed Liabilities, except to the extent that any such right,
         claim, credit or cause of action constitutes an Excluded Asset;

                  (ix) All other assets and properties owned by Seller
         principally used in or specific in all material respects to the
         ownership or operation of the NetCure Business, including but not
         limited to Governmental Authorizations, Private Authorizations, sales
         leads exclusive to the NetCure Business, customer lists, supplier
         lists, technical information and data, computer disks and tapes,
         drawings, blueprints, schematics, maps, reports, lists, plans, filings
         with Authorities and all books and records, including customer records,
         relating to the NetCure Business;

                  (x) All rights, title and interest of Seller to and und the
         domain names described on Schedule 1.1(a)(x) hereto; and

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                  (xi) All goodwill associated with the foregoing Purchased
         Assets.

                  (b) It is expressly understood and agreed that,
notwithstanding anything to the contrary set forth herein, the Purchased Assets
shall not include, and Seller shall not sell, convey, assign, transfer or
deliver, any of the following properties and assets of Seller (the "EXCLUDED
ASSETS"):

                  (i) All assets and properties (including, without limitation,
         all rights, properties, claims, contracts, business, real property,
         leasehold interests in real property, equipment, machinery, tools and
         other tangible personal property ) of Seller that are not used in or
         related to the NetCure Business;

                  (ii) Source code, object code and documentation for the G2 and
         G2-related software;

                  (iii) Licenses held by Seller relating to (A) Adventnet and
         (B) Install Shield development;

                  (iv) Any right, title or interest in the Licensed Programs or
         Program Documentation, except as otherwise provided in the License
         Agreement;

                  (v) Any right, title or interest in Seller's patent entitled
         "Intelligent Transaction Mining System";

                  (vi) Any right, title or interest in non-transferable,
         commercially available software not incorporated into any of the
         NetCure version 1.0, NetCure version 2.0 or Xmap/BizCure product lines;

                  (vii) The capital stock of any Subsidiary of Seller;

                  (viii) Cash and cash equivalents, bank accounts, certificates
         of deposits, Treasury bills and other marketable securities and similar
         investments held by Seller;

                  (ix) All right, title and interest of Seller in any insurance
         policies relating to the NetCure Business and all rights of Seller to
         claims, related refunds and all proceedings arising from or related to
         (A) the operation of the NetCure Business prior to the Closing and (B)
         the Excluded Assets;

                  (x) All rights of Seller arising under this Agreement;

                  (xi) All claims, rights and interest in and to any refunds of
         Taxes for period prior to the Closing;

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                  (xii) All actions, claims, causes of action, rights of
         recovery and rights of setoff of any kind arising before, on or after
         the Closing Date arising from the Excluded Assets;

                  (xiii) Any pension, health or welfare plans, any
         post-retirement benefits from any current or former employees of Seller
         who were or are employees involved in the NetCure Business and all
         payments made by Seller which constitute prepaid expenses of the
         NetCure Business relating to such excluded employee benefits;

                  (xiv) The name "Gensym", "Fault Expert", "G2", "G1", "Gensym
         G2", "GSpan", "NeurOn-Line", "Operations Expert", "OpEx", "Optegrity"
         or "Rethink" or any trademarks, trade names or logos, trade dress,
         brand names or service marks containing any of the foregoing or any
         derivative thereof;

                  (xv) Books and records that Seller is required by law to
         retain and books of account, tax reports and returns and the like
         related to the NetCure Business, subject to the right of Purchaser to
         have access to and to copy such documents for a reasonable period, not
         to exceed five years from the Closing Date, and Seller's corporate
         minute books and other books and records related to internal corporate
         matters and financial relationships with Seller's lenders and
         affiliates;

                  (xvi) Accruals for workers' compensation claims;

                  (xvii) All intercompany accounts receivable payable to Seller
         by any of its Subsidiaries;

                  (xviii) All publicly available "open source" software code
         that may be utilized or bundled with the Purchased Assets or the
         Licensed Programs; and

                  (xix) All real property and improvements to real property of
         Seller, whether or not used in or related to the NetCure Business.

         1.2      ASSUMPTION OF CERTAIN LIABILITIES; TRANSFER TAXES.

                  (a) At the Closing, Purchaser shall assume, and agree to pay,
discharge and perform in accordance with their respective terms, the following
liabilities and obligations of Seller (the "ASSUMED LIABILITIES"), in accordance
with an Assumption Agreement substantially in the form attached hereto as
EXHIBIT A to be executed and delivered by Purchaser to Seller at the Closing:
(i) all obligations and liabilities arising after the Closing Date, or required
to be performed or discharged in accordance with their terms after the Closing
Date and relating to periods after the Closing Date, under Governmental
Authorizations, the Assigned Third Party License Agreements and the Customer
Agreements; (ii) any Taxes accrued after the Closing Date in connection with the
ownership and operation of the Purchased Assets, except to the extent that any
such Taxes were required by applicable law to have been accrued by Seller on or
prior to the Closing Date; and (iii) any claim or legal action based upon,
arising out of or relating to the ownership or operation of the Purchased Assets
or any act or omission or obligation or

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liability of Purchaser, occurring, arising or accruing after the Closing
Date, provided that such claim or legal action is not based upon an act or
omission which occurred on or before the Closing Date.

                  (b) Seller agrees to pay and perform in accordance with
Applicable Law, all liabilities and obligations for state and local sales, use,
transfer, excise or license taxes, fees or charges arising out of the sale and
transfer of the Purchased Assets pursuant hereto.

                  (c) Purchaser shall not assume, and shall have no liability
for, any debts, liabilities or obligations of Seller other than the Assumed
Liabilities.

                  (d) Anything herein to the contrary notwithstanding, Seller
shall retain and be responsible for, and shall indemnify Purchaser against, all
of its debts, liabilities and obligations other than the Assumed Liabilities.

         1.3      PURCHASE PRICE.

                  (a) The total purchase price (the "PURCHASE PRICE") for the
Purchased Assets shall be (i) Two Million Five Hundred Thousand Dollars
($2,500,000) less (ii) any adjustment made at the Closing pursuant to Section
1.3(b).

                  (b) The Purchase Price payable at Closing shall be adjusted
(i) downward in an amount equal to a pro rata portion of all prepaid maintenance
fees and other prepaid fees paid to Seller in connection with the Customer
Agreements, such pro rata portion with respect to each Customer Agreement to
equal the product obtained by multiplying (A) the total amount of prepaid
maintenance fees and other prepaid fees paid to Seller pursuant to such Customer
Agreement by (B) the quotient obtained by dividing (I) the number of days
following the Closing Date for which prepaid fees have been paid to the Seller
pursuant to such Customer Agreement by (II) the total number of days for which
such prepaid fees were paid to the Seller; and (ii) upward in an amount equal to
a pro rata portion of all prepaid maintenance fees and other prepaid fees paid
by Seller in connection with the Assigned Third Party License Agreements, such
pro rata portion with respect to each Assigned Third Party License Agreement to
equal the product obtained by multiplying (A) the total amount of prepaid
maintenance fees and other prepaid fees paid by the Seller pursuant to such
Assigned Third Party License Agreement by (B) the quotient obtained by dividing
(I) the number of days following the Closing Date for which prepaid fees have
been paid by the Seller pursuant to such Assigned Third Party License Agreement
by (y) the total number of days for which such prepaid fees were paid by the
Seller.

         1.4      ALLOCATION OF PURCHASE PRICE. The aggregate amount of the
Purchase Price and the Assumed Liabilities (together, the "Aggregate Purchase
Price") shall be allocated among the Purchased Assets as of the Closing Date in
accordance with a schedule (the "Allocation Schedule") to be prepared by
Purchaser and delivered, within one hundred twenty (120) days after the Closing
Date, to Seller for its approval (which approval shall not be unreasonably
withheld or delayed). The parties recognize that the Allocation Schedule will
not include Purchaser's acquisition expenses. The Allocation Schedule will be
prepared in the manner

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described in this Section and shall comply with the provisions of Section
1060 of the Code. Any subsequent adjustments to the Aggregate Purchase Price
shall be reflected in a manner consistent with Treasury Regulation s.
1.1060-1(e). Purchaser and Seller each agree (i) to reflect the Purchased
Assets on their respective books for tax reporting purposes in accordance
with the Allocation Schedule, (ii) to prepare all tax reports (including any
forms or reports required to be filed pursuant to Section 1060 of the Code,
the Treasury Regulations thereunder or any provisions of state, local or
foreign law ("1060 Forms") in accordance with and based upon such allocation,
(iii) to cooperate in the preparation of any 1060 Forms and to file such 1060
Forms in the manner required by applicable law, and (iv) not to take any
position inconsistent with such Allocation Schedule upon examination of any
tax refund or refund claim, in any litigation, or otherwise, unless required
by law.

         1.5      CLOSING.

                  (a) CLOSING. Subject to the terms and conditions of this
Agreement, the sale and purchase of the Purchased Assets and the assumption of
the Assumed Liabilities contemplated by this Agreement shall take place at a
closing (the "CLOSING") to be held at the offices of Hale and Dorr LLP, 60 State
Street, Boston, Massachusetts at 10:00 a.m., Boston time, on (i) one Business
Day after satisfaction or waiver of all conditions to the obligations of the
parties set forth herein or (ii) at such other place or on such other date as
Seller and Purchaser may mutually agree upon in writing (the day on which the
Closing actually takes place being the "CLOSING DATE") The parties shall use
their reasonable best efforts to ensure that the Closing Date is no later than
November 16, 2001.

                  (b) CLOSING DELIVERIES BY SELLER. At the Closing Seller shall
deliver or cause to be delivered to Purchaser: (i) executed originals of such
bills of sale, deeds, endorsements, assignments and other instruments, in form
and substance satisfactory to Purchaser, as may be requested by Purchaser to
transfer the Purchased Assets to Purchaser or evidence such transfer on the
public records and effective to vest in Purchaser good, valid and marketable
title to, and all right, title and interest in, to and under, the Purchased
Assets, free and clear of all Encumbrances other than Permitted Encumbrances,
and Seller will take such steps as may be necessary to put Purchaser in actual
possession and operating control of the Purchased Assets; (ii) an executed
original of the License Agreement; (iii) an executed original of a receipt for
the Purchase Price; and (iv) the certificates and other documents required to be
delivered pursuant to Section 5.

                  (c) CLOSING DELIVERIES BY PURCHASER. At the Closing Purchaser
shall deliver or cause to be delivered to Seller: (i) the Purchase Price, less
the deposit amount of $100,000 (the "DEPOSIT") heretofore paid by Purchaser to
Seller (receipt of which is hereby acknowledged by Seller), by wire transfer of
immediately available funds pursuant to Seller's written instructions delivered
at least one Business Day prior to the Closing; (ii) an executed original of the
Assumption Agreement; (iii) an executed original of the Reseller Agreement; and
(iv) the certificates and other documents required to be delivered pursuant to
Section 6.

SECTION 2.        REPRESENTATIONS AND WARRANTIES OF SELLER.

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         Except as set forth in the disclosure schedule prepared by Seller and
attached hereto (the "DISCLOSURE SCHEDULE"), Seller represents and warrants to
Purchaser as follows:

         2.1      ORGANIZATION AND BUSINESS; POWER AND AUTHORITY; EFFECT OF
                  TRANSACTION.

                  (a) Seller (i) is a corporation duly organized, validly
existing and in good standing under the laws of the State of Delaware, (ii) has
all requisite power and authority (corporate and other) to own or hold under
lease its properties and to conduct its business as now conducted and as
presently proposed to be conducted, and has made and has in full force and
effect all Governmental Authorizations and Private Authorizations to the extent
required for such ownership and lease of its property and conduct of its
business (including the NetCure Business), and (iii) has duly qualified and is
authorized to do business and is in good standing as a foreign corporation in
each jurisdiction in which it is required to be so qualified or authorized to do
business, except where the failure to be so qualified or authorized to do
business (individually or in the aggregate) would not have a Material Adverse
Effect on Seller or the NetCure Business. Complete and correct copies of the
certificate of incorporation and bylaws of Seller, each as amended to date, have
heretofore been made available by Seller to Purchaser. Such certificate of
incorporation and bylaws are in full force and effect.

                  (b) Seller has all requisite corporate power and authority
necessary to enable it to execute and deliver, and to perform its obligations
under, and to consummate the transactions contemplated by, this Agreement and
each other Transaction Document executed or to be executed by Seller; and the
execution, delivery and performance of this Agreement and each other Transaction
Document executed or to be executed by Seller have been duly authorized by all
requisite corporate action. No notice to, vote, approval or consent of any of
Seller's stockholders is required under the Delaware General Corporation Law,
Seller's certificate of incorporation, Seller's bylaws or otherwise in
connection with Seller's execution, delivery and performance of this Agreement
or any other Transaction Document executed or to be executed by Seller. This
Agreement has been duly executed and delivered by Seller and constitutes, and
each other Transaction Document when executed and delivered by Seller will
constitute, legal, valid and binding obligations of Seller, enforceable in
accordance with their respective terms, subject as to enforcement of remedies to
applicable bankruptcy, insolvency, reorganization, moratorium or similar laws
affecting generally the enforcement of creditors' rights and subject to a
court's discretionary authority with respect to the granting of a decree
ordering specific performance or other equitable remedies.

                  (c) Neither the execution and delivery of this Agreement or
any other Transaction Document, nor the consummation of the transactions herein
or therein contemplated, nor compliance with the terms, conditions and
provisions hereof or thereof by Seller:

                  (i) (A) does or will conflict with, or result in a breach or
         violation of, or constitute a default under, any Applicable Law on the
         part of Seller or any of its Subsidiaries, (B) does or will conflict
         with or result in a breach or violation of, or constitute a default
         under, either the certificate of incorporation or bylaws of Seller, or
         (C) subject to the obtaining of each of the Seller Consents, does or
         will conflict with, or result in a breach

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         or violation of, or constitute a default under, or permit the
         acceleration of any obligation or liability under, or (but for any
         requirement of giving of notice or passage of time or both) would
         constitute such a conflict with, breach or violation of, or default
         under, or permit any such acceleration of, (I) any Contractual
         Obligation of Seller or (II) any Contractual Obligation relating to the
         NetCure Business, or

                  (ii) does or will result in or permit the creation or
         imposition of any Encumbrance upon (A) any property now owned or leased
         by Seller or (B) any of the Purchased Assets,

except, with respect to the immediately preceding clauses (i)(C)(I) and (ii)(A),
in cases where such conflicts, breaches, violations, defaults, accelerations or
Encumbrances would not (individually or in the aggregate) result in a Material
Adverse Effect on Seller or the NetCure Business.

                  (d) Seller does not have any Subsidiaries other than those set
forth in Section 2.1(d) of the Disclosure Schedule. None of such Subsidiaries
now holds, uses or has title to any of the Purchased Assets or the NetCure
Business or ever has held or had title to any of the Purchased Assets. None of
such Subsidiaries is party to or has any interest in any of the Purchased Assets
or any Contractual Obligation relating to the NetCure Business.

         2.2      CONSENTS. Except as set forth in Section 2.2 of the Disclosure
Schedule (the items set forth in the Disclosure Schedule pursuant to this
Section being collectively referred to herein as the "SELLER CONSENTS"), no
Governmental Authorizations or Private Authorizations are required to be
obtained or made by or with respect to Seller or any of its Subsidiaries on or
prior to the Closing Date in connection with (i) the execution, delivery and
performance of this Agreement or any of the other Transaction Documents, the
consummation of the transactions contemplated hereby and thereby or the taking
by Seller of any other action contemplated hereby or thereby, (ii) the
continuing validity and effectiveness of (and prevention of any material default
under or violation of the terms of) any Lease, Governmental Authorization,
Private Authorization or Contractual Obligation (including but not limited to
the Assigned Third Party License Agreements and the Customer Agreements)
included among the Purchased Assets or to be assumed by Purchaser at the
Closing, or (iii) the ownership and conduct by Purchaser of the NetCure Business
and the Purchased Assets following the Closing as conducted on the date hereof.

         2.3      SELLER FINANCIAL STATEMENTS; UNDISCLOSED LIABILITIES.

                  (a) The audited consolidated financial statements and
unaudited interim consolidated financial statements of Seller and its
Subsidiaries included in each form, report, schedule, registration statement,
definitive proxy statement and other document filed or required to be filed by
Seller with the Commission since December 31, 2000 (as such financial statements
have since the time of their filing been amended, the "SELLER FINANCIAL
STATEMENTS") (i) have been prepared in accordance with GAAP applied on a
consistent basis throughout the periods covered thereby (except as may be
indicated therein or in the notes thereto, and in the case of quarterly
financial statements, as permitted by the instructions to Form 10-Q under the
Exchange Act), (ii)

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fairly present the consolidated financial condition, results of operations
and cash flows of the Seller and its Subsidiaries as of the respective dates
thereof and for the periods referred to therein, and (iii) are substantially
consistent with the books and records of the Seller. Neither Seller nor any
of its Subsidiaries has any liabilities or obligations of any nature (whether
accrued, absolute, contingent or otherwise) required by GAAP to be set forth
on a consolidated balance sheet of Seller and its Subsidiaries or in the
notes thereto, as of the respective dates thereof and for the periods
referred to therein.

         2.4      ABSENCE OF CERTAIN CHANGES OR EVENTS. Except as set forth in
Section 2.4 of the Disclosure Schedule, since June 30, 2001: (i) there has been
no Material Adverse Effect on the NetCure Business or Purchased Assets; (ii)
there has been no damage, destruction or loss, whether or not covered by
insurance, that has or is likely to have a Material Adverse Effect on the
NetCure Business or Purchased Assets; (iii) Seller has not incurred any material
liability or obligation (whether accrued, absolute, contingent or otherwise)
relating to the NetCure Business or the Purchased Assets other than in the
ordinary course of business consistent with past practice, nor entered into any
material transaction or agreement relating to the NetCure Business or the
Purchased Assets not in the ordinary course of business; (iv) there has been no
change in accounting methods, principles or practices by Seller or any of its
Subsidiaries affecting the NetCure Business or Purchased Assets, except insofar
as may have been required by a change in GAAP; (v) there has been no revaluation
by Seller of any of the Purchased Assets; (vi) Seller has operated the NetCure
Business solely in the normal, usual and customary manner in the ordinary and
regular course of business consistent with past practice; (vii) Seller has not
Encumbered any of the Purchased Assets, other than Permitted Encumbrances,
experienced any change in its relationships with its customers or suppliers of
raw materials or other supplies used by Seller in the NetCure Business, except
for changes in the ordinary course of business consistent with past practice
which, individually or in the aggregate, have not had or, as far as any Seller
can reasonably foresee, is not likely to have or cause a Material Adverse Effect
on the NetCure Business or Purchased Assets; (viii) Seller has not canceled,
compromised, waived or released any right or claim (or series of related rights
or claims) except such as would not have or result in a Material Adverse Effect
on the NetCure Business or Purchased Assets; and (ix) Seller has not granted any
license or sublicense of any rights under or with respect to any of the
Purchased Assets (other than licenses to customers and suppliers entered into in
the ordinary course of business consistent with past practice).

         2.5       TITLE TO PROPERTIES.

                  (a) Seller has good and valid marketable title to all the
properties and assets included among the Purchased Assets, in each case free and
clear of all Encumbrances other than (i) Permitted Encumbrances and (ii) the
Encumbrances described in Section 2.5 of the Disclosure Schedule.

                  (b) The Purchased Assets, together with the rights to be
provided pursuant to the License Agreement, include all of the assets,
properties and rights (other than any third party software license generally
available to the public at a cost of less than $5,000 which is not transferable
and is not incorporated into any of the NetCure version 1.0, NetCure version 2.0
or

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Xmap/BizCure product lines) necessary for the ownership and operation by
Purchaser of the NetCure Business after the Closing Date in all material
respects as the NetCure Business is owned and operated by Seller at the date
hereof. The Tangible Personal Property, taken as a whole, is in good working
condition. The Tangible Personal Property constitutes all tangible personal
property used principally in the development, testing, manufacture, support
or maintenance of the NetCure Business.

                  (c) Upon and subject to the Closing, Purchaser will acquire
and have vested in it good, valid and marketable title to the Purchased Assets,
free and clear of all Encumbrances other than Permitted Encumbrances.

         2.6      CONTRACTS AND COMMITMENTS. Seller has delivered true and
correct copies of the Assigned Third Party License Agreements and Customer
Contracts to Purchaser. Each of the Assigned Third Party License Agreements and
Customer Contracts is binding and enforceable against Seller and, to the
knowledge of Seller, each other party thereto, in accordance with its terms.
Neither Seller nor, to the knowledge of Seller, any other party to any of the
Assigned Third Party License Agreements and Customer Contracts is in material
default thereunder or in material breach thereof. There exists no event,
occurrence, condition or act which constitutes or, with the giving of notice,
the lapse of time or the happening of any future event or condition, would
become a material default by Seller, or to the knowledge of Seller, any other
party under any of the Assigned Third Party License Agreements and Customer
Contracts. The Assigned Third Party License Agreements and Customer Contracts
collectively constitute all of the Private Authorizations and Contractual
Obligations (other than any third party software license generally available to
the public at a cost of less than $5,000 which is not transferable and is not
incorporated into any of the NetCure version 1.0, NetCure version 2.0 or
Xmap/BizCure product lines) which (i) relate materially to the NetCure Business
or is included among the Purchased Assets and (ii) are necessary to enable
Seller to conduct the NetCure Business in the manner in which it is currently
being conducted.

         2.7      LITIGATION; GOVERNMENTAL AUTHORIZATIONS; COMPLIANCE WITH
                  APPLICABLE LAW.

                  (a) Except as set forth in Section 2.7(a) of the Disclosure
Schedule, there is no Legal Action which is pending or has been threatened in
writing or, to Seller's knowledge, otherwise threatened against any of Seller
and its Subsidiaries or any of their respective officers or directors (i)
arising from or related to (A) the NetCure Business or any of the Purchased
Assets or (B) this Agreement or any of the other Transaction Documents or any
of the transactions contemplated hereby or thereby, or (ii) which in any
manner (A) challenges or seeks to prevent, enjoin, alter or delay any of the
transactions contemplated hereby or by any of the other Transaction Documents
or seeks damages from any Person in respect thereof or (B) relates to any
claim to void or avoid or otherwise rescind the transactions contemplated
hereby or by any of the other Transaction Documents or (C) could reasonably
be expected to adversely affect Purchaser's ownership or operation of the
NetCure Business or any of the Purchased Assets or require the divestiture by
Purchaser of all or any portion of the NetCure Business or the Purchased
Assets or impose any material limitation on the ability of Purchaser to
conduct the NetCure Business or to own and operate the Purchased Assets after
the Closing.

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                  (b) Seller has obtained and maintained all Governmental
Authorizations which are necessary for the ownership of the Purchased Assets and
the conduct of the NetCure Business as now conducted which, if not obtained and
maintained, would (individually or in the aggregate) have a Material Adverse
Effect on the NetCure Business or the Purchased Assets. No such Governmental
Authorization is the subject of any pending or, to Seller's knowledge,
threatened revocation or termination.

                  (c) Seller is not in violation of or in default with respect
to any Applicable Law which violation or default, individually or in the
aggregate, would have a Material Adverse Effect on (i) Seller or (ii) the
NetCure Business or Purchased Assets. Neither the NetCure Business nor the
Purchased Assets are bound by or subject to any order, writ, injunction,
judgment, decree or arbitral award of any Authority.

         2.8      INTELLECTUAL PROPERTY RIGHTS.

                  (a) As used in this Agreement, the term "INTELLECTUAL PROPERTY
RIGHTS" means (i) patents, trademarks, service marks, trade names, copyrights,
trade secrets, supplier and customer lists, proprietary information,
certifications or approvals from any independent approval or testing service or
laboratory or any Authority, technology, know-how, research and development
information, rights to trade dress, drawings, designs, specifications, patterns,
dies, molds, models, manufacturing and processing instructions and data,
concepts, ideas, technical information or proprietary information, slogans,
pricing and cost information, business and marketing plans and customer,
supplier and broker lists, files and information and other similar rights and
intangible property, and (ii) licenses of, registrations of and applications
for, and rights to register or apply for, any of the foregoing.

                  (b) Except as set forth in Section 2.5 of the Disclosure
Schedule, Seller has exclusive ownership and good, valid and marketable title to
all Intellectual Property Rights included among the Purchased Assets (the "OWNED
INTELLECTUAL PROPERTY RIGHTS"), free and clear of all Encumbrances other than
Permitted Encumbrances. Seller's rights in the Owned Intellectual Property
Rights are freely transferable, except as set forth in Section 2.5 of the
Disclosure Schedule. Seller has not developed jointly with any other Person any
of the Owned Intellectual Property Rights with respect to which such other
Person has any rights. Clauses (i) through (iv) of Section 1.1(a) briefly
describes all material Intellectual Property Rights included among the Owned
Intellectual Property Rights.

                  (c) Section 2.8(c) of the Disclosure Schedule briefly
describes all material Intellectual Property Rights (other than (A) the Owned
Intellectual Property Rights, (B) Intellectual Property Rights which are
licensed to Seller under any third party software license generally available to
the public at a cost of less than $5,000, are not transferable and are not
incorporated into any of the NetCure version 1.0, NetCure version 2.0, NetSleuth
or Xmap/BizCure product lines, (C) publicly available "open source" software
code that may be utilized or bundled with the Purchased Assets or the Licensed
Programs, and (D) Intellectual Property Rights which are included among the
Excluded Assets and are not material to the use, running, operation, execution
or functionality of any of the NetCure version 1.0, NetCure version

                                                                              11
<PAGE>

2.0, NetSleuth or Xmap/BizCure product lines) used in or associated in a
material way with the NetCure Business as now conducted, including whether
such Intellectual Property Rights are (i) owned by Seller or (ii) licensed to
or which Seller is otherwise authorized to use in connection with the NetCure
Business (the "LICENSED-IN INTELLECTUAL PROPERTY RIGHTS"). Except as set
forth in Section 2.8(c) of the Disclosure Schedule, Seller is not obligated
to make any payment to any Person for the use of any of the Licensed Programs
or Program Documentation. Except as set forth in Section 2.8(c) of the
Disclosure Schedule, the Assigned Third Party License Agreements comprise all
material Licensed-in Intellectual Property Rights of the NetCure Business
(other than (A) any third party software licenses generally available to the
public at a cost of less than $5,000 which is not transferable and is not
incorporated into any of the NetCure version 1.0, NetCure version 2.0,
NetSleuth or Xmap/BizCure products, (B) publicly available "open source"
software code that may be utilized or bundled with the Purchased Assets, and
(C) Intellectual Property Rights which are included among the Excluded Assets
and are not material to the use, running, operation, execution or
functionality of any of the NetCure version 1.0, NetCure version 2.0,
NetSleuth or Xmap/BizCure products). Except as set forth in Section 2.8(c) of
the Disclosure Schedule, Seller has a valid right to use all of the
Licensed-in Intellectual Property Rights and to transfer the Third Party
Assigned License Agreements to Purchaser at the Closing.

                  (d) Seller has not granted any rights or licensed to any
Person the NetCure version 1.0 or NetSleuth products, except pursuant to the
Customer Agreements or as described in Section 2.5 or 2.8(d) of the Disclosure
Schedule. True and complete copies of all of click to accept license agreements
comprising the Customer Agreements have been delivered to Purchaser.

                  (e) Seller has made available to Purchaser complete copies of
all documentation relating to the current versions of NetCure version 1.0,
NetCure version 2.0, NetSleuth or Xmap/BizCure products (including but not
limited to source code and object code).

                  (f) None of the Owned Intellectual Property Rights
infringes or violates any Intellectual Property Rights (other than patents
and patent applications) of any third party in any material way. To Seller's
knowledge, none of the Owned Intellectual Property Rights infringes or
violates in any material way any patent or patent application of any third
party. None of Seller and its Subsidiaries has received any notice or claim
or demand that any of the Owned Intellectual Property Rights or the
Licensed-in Intellectual Property Rights infringes or violates any
Intellectual Property Rights of any other Person in any material way, and
Seller knows of no basis for any such notice or claim or demand.

                  (g) Seller has taken all reasonable measures and precautions
necessary to protect and maintain the confidentiality and secrecy of all trade
secrets and similar rights, assets and properties included among the Owned
Intellectual Property Rights (except such Intellectual Property Rights whose
value would be unimpaired by public disclosure) and otherwise to maintain and
protect the value of all Owned Intellectual Property Rights.

                   (h) To Seller's knowledge, each item of Owned Intellectual
Property Rights included in the NetCure version 1.0 or NetSleuth products
conforms in all material respects with

                                                                              12
<PAGE>

the description set forth in Section 2.8(h) of the Disclosure Schedule,
except as otherwise set forth in the report from Seller's Trouble Ticketing
System (Helplink export) of all NetCure and NetSleuth issues and bugs as such
report has been delivered to Purchaser.

                  (i) The Owned Intellectual Property Rights, the Licensed
Programs and the Licensed-in Intellectual Property Rights constitute all the
Intellectual Property Rights (other than (i) Intellectual Property Rights which
are licensed to Seller under any third party software license generally
available to the public at a cost of less than $5,000, are not transferable and
are not incorporated into any of the NetCure version 1.0, NetCure version 2.0,
NetSleuth or Xmap/BizCure products and (ii) publicly available "open source"
software code that may be utilized or bundled with the Purchased Assets or the
Licensed Programs) necessary to enable Seller to use, run, execute, operate,
develop, copy, reproduce, market, distribute, license, sublicense, support,
maintain and exploit the NetCure version 1.0 and NetSleuth products in all
material respects in the manner in which such product lines are being used, run,
executed, operated, developed, copied, reproduced, marketed, distributed,
licensed, sublicensed, supported, maintained and exploited at the date hereof;
provided that nothing in this Section 2.8(i) shall be construed as expanding
Seller's representations regarding infringement of third party Intellectual
Property Rights as set forth in Section 2.8(f). Seller has not licensed any of
the Owned Intellectual Property Rights to any Person on an exclusive basis.
Seller has not entered into any covenant not to compete or Instrument which
limits its ability to conduct the NetCure Business or exploit fully any of the
Owned Intellectual Property Rights in any market or geographical area or with
any Person or would apply to Purchaser following the Closing.

                  (j) To Seller's knowledge, no employee or consultant or
independent contractor or former employee or consultant or independent
contractor of any of Seller and its Subsidiaries is in violation of any material
term of any employment contract, nondisclosure or invention agreement,
non-competition agreement, consulting agreement, engineering agreement,
software development agreement or other similar agreement where such violation
relates to or affects the NetCure Business or any of the Purchased Assets. There
is no pending or, to Seller's knowledge, threatened Legal Action, nor to its
knowledge any basis therefor, with respect to any such employment contract,
nondisclosure or invention agreement, non-competition agreement, consulting
agreement, engineering agreement, software development agreement or other
similar agreement, which relates to or would reasonably likely materially
adversely affect the NetCure Business or any of the Purchased Assets.

         2.9      DESIGNATED EMPLOYEES. The Disclosure Schedule sets forth a
true and complete list of the names and positions of the employees of Seller
whose employment services relate principally to the NetCure Business and the
Purchased Assets (the "DESIGNATED EMPLOYEES") and their respective base rate of
compensation. Each of the Designated Employees is a full-time at-will employee
of Seller. The Disclosure Schedule lists all employment, management, consulting,
management retention or other personal service, or compensation agreements or
arrangements and benefit plans covering one or more of the Designated Employees
(including severance, termination or change-of-control arrangements), and a true
and complete copy of each such agreement has been delivered to Purchaser.

                                                                              13
<PAGE>

         2.10      RELATED PARTY TRANSACTIONS. None of the parties (other than
Seller) to any Contractual Obligation to be assumed by Purchaser at the Closing
is an officer, director or Affiliate of Seller.

         2.11      INSURANCE. The NetCure Business and the Purchased Assets are
insured by recognized institutions with policies in such amounts and with such
deductibles and covering such risks as are generally deemed adequate and
customary for such business and assets including, but not limited to, policies
covering personal property owned or leased by Seller against theft, damage,
destruction and acts of vandalism. Seller has no reason to believe that, were it
to retain and operate the NetCure Business, it would not be able (i) to renew
its existing insurance coverage as and when such policies expire or (ii) to
obtain comparable coverage from similar institutions as may be necessary or
appropriate to conduct the NetCure Business as now conducted and at a cost that
would not result in a Material Adverse Change to the NetCure Business. Seller
has not been denied any insurance coverage relating to the NetCure Business or
Purchased Assets which it has sought or for which it has applied.

         2.12      TAX MATTERS. Except as set forth in Section 2.12 of the
Disclosure Schedule: (i) Seller and its Subsidiaries have heretofore filed
all Tax Returns with respect to Tax periods ending after December 31, 1997
required to be filed, in all requisite jurisdictions, and have paid, or made
adequate provision in accordance with GAAP consistently applied, for the
payment of, all Taxes shown to be due and payable on such Tax Returns; (ii)
all payroll and income Taxes which any of Seller or its Subsidiaries is
required by law to withhold and collect have been duly withheld and
collected, and have been paid over, in a timely manner, to the proper
Authorities to the extent due and payable; and (iii) neither Seller nor any
of its Subsidiaries has executed any waiver to extend, or otherwise taken any
action that would have the effect of extending, the applicable statute of
limitations in respect of any Tax liabilities of Seller or any of its
Subsidiaries for the fiscal years prior to and including the most recently
completed fiscal year. Neither Seller nor any of its Subsidiaries is a
"consenting corporation" within the meaning of Section 341(f) of the Code.
Seller and each of its Subsidiaries have at all times been taxable as a
Subchapter C corporation under the Code. Neither Seller nor any Subsidiary
has ever been a member of any consolidated group (other than with Seller and
its Subsidiaries) for Tax purposes. Federal and state income tax returns of
Seller and its Subsidiaries have been examined by the IRS or applicable state
Authority as shown in the Disclosure Schedule. At the date hereof, there are
no Encumbrances on any of the assets of Seller or any of its Subsidiaries
that arose in connection with any failure (or alleged failure) to pay any
Tax. Neither Seller nor any of its Subsidiaries (i) is a party to any Tax
allocation or sharing agreement, or (ii) has any liability or obligation for
the Taxes of any Person (other than Seller or any of its Subsidiary) under
Treas. Reg. s.1.1502-6 (or any similar provision of any other Applicable
Law), as a transferee or successor, by contract, or otherwise.

         2.13      BROKER OR FINDER. No Person assisted in or brought about the
negotiation of this Agreement or the subject matter of the transactions
contemplated hereby in the capacity of broker, agent or finder or in any similar
capacity on behalf of Seller or any of its Subsidiaries other than as set forth
in the Disclosure Schedule, which sets forth a true, accurate and complete
description of the arrangements with any such Person.

                                                                              14
<PAGE>

         2.14      DISCLOSURE. No representation or warranty by Seller in this
Agreement, or in any list, statement, document or information set forth in or
attached to any schedule (including the Disclosure Schedule) delivered or to be
delivered pursuant hereto, contains or will contain any untrue statement of a
material fact or omits or will omit any material fact necessary in order to make
the statements contained herein or therein, in light of the circumstances under
which they were made, not misleading.

         2.15      CUSTOMERS. Section 2.15 of the Disclosure Schedule lists all
of the existing customers of the NetCure Business. None of such customers has
ceased or, to Seller' knowledge, threatened to cease to use the products or
services marketed by Seller in the NetCure Business, or has substantially
reduced the use of such products or services.

         2.16      SALE PROCESS. The execution of this Agreement and the
consummation of the transactions contemplated hereby are the culmination of
an auction of the NetCure Business conducted by Seller from August 13, 2001
through October 16, 2001. Seller initially contacted sixteen (16) potential
buyers, nine (9) of which signed non-disclosure agreements and began due
diligence on Seller and three (3) of which submitted non-binding letters of
interest to acquire the NetCure Business. Seller engaged in arm's-length
negotiations with each of the three parties (none of which are affiliated
with Seller) that submitted letters of interest and, based upon the terms and
conditions negotiated by Seller with Purchaser, the Board of Directors of
Seller, in the exercise of its business judgment, deemed it advisable and in
the best interest of the corporation and its stockholders for Seller to enter
this Agreement and consummate the transactions contemplated hereby.

         2.17      DELAWARE OPINION. Each of the chief executive officer and the
chief financial officer of Seller has read and reviewed (i) the form of opinion,
to be dated the date of the Closing, Richards, Layton & Finger, P.A. to be
delivered pursuant to Section 5.5(ii) and (ii) the Financial Statements (as
defined in such opinion), including but not limited to all of the factual
premises, assumptions and recitations set forth in of such opinion under the
captions "BACKGROUND" and "THE PROPOSED SALE". To the knowledge of each such
officer, all of the factual premises, assumptions and recitations set forth in
such opinion and the Financial Statements are true and correct in all material
respects, and as of the date of the Closing there will have been no material
change to any such data and information.

SECTION 3. REPRESENTATIONS AND WARRANTIES OF PURCHASER.

         Purchaser represents and warrants to Seller as follows:

         3.1      ORGANIZATION AND BUSINESS; POWER AND AUTHORITY; EFFECT OF
                  TRANSACTION.

                  (a) Purchaser (i) is a corporation duly organized, validly
existing and in good standing under the laws of the Commonwealth of
Massachusetts, and (ii) has all requisite corporate power and authority to own
or hold under lease its properties and to conduct its business as now conducted
and as presently proposed to be conducted.

                                                                              15
<PAGE>

                  (b) Purchaser has all requisite corporate authority, and has
made and has in full force and effect all Governmental Authorizations and
Private Authorizations necessary to enable it, to execute and deliver, and to
perform its obligations under, and to consummate the transactions contemplated
by, this Agreement and each other Transaction Document executed or to be
executed by it; and the execution, delivery and performance of this Agreement
and such other Transaction Documents have been duly authorized by all requisite
corporate action. This Agreement has been duly executed and delivered by
Purchaser and constitutes, and each other Transaction Document executed or to be
executed by it when executed and delivered by Purchaser will constitute, its
legal, valid and binding obligations, enforceable against it in accordance with
their respective terms, subject as to enforcement of remedies to applicable
bankruptcy, insolvency, reorganization, moratorium or similar laws affecting
generally the enforcement of creditors' rights and subject to a court's
discretionary authority with respect to the granting of a decree ordering
specific performance or other equitable remedies.

                  (c) Neither the execution and delivery of this Agreement or
any other Transaction Document executed or to be executed by Purchaser, nor
the consummation of the transactions herein or therein contemplated, nor
compliance with the terms, conditions and provisions hereof or thereof by
Purchaser:

                  (i) (A) does or will conflict with, or result in a breach or
         violation of, or constitute a default under, any Applicable Law on the
         part of Purchaser, (B) does or will conflict with or result in a breach
         or violation of, or constitute a default under, either of the articles
         of organization or bylaws of Purchaser or (C) does or will conflict
         with, or result in a breach or violation of, or constitute a default
         under, or permit the acceleration of any obligation or liability under,
         or (but for any requirement of giving of notice or passage of time or
         both) would constitute such a conflict with, breach or violation of, or
         default under, or permit any such acceleration of, any material
         Contractual Obligation of Purchaser, or

                  (ii) will require any Governmental Authorization or Private
         Authorization,

except, with respect to clauses (i)(A), (i)(C) and (ii) above, such
conflicts, breaches, defaults, violations, accelerations, authorizations or
filings, that (individually or in the aggregate) are not reasonably likely to
result in a Material Adverse Effect on Purchaser or on the ability of
Purchaser to perform any of its obligations set forth in this Agreement or
any other Transaction Document.

         3.2      BROKER OR FINDER. No Person assisted in or brought about the
negotiation of this Agreement or the subject matter of the transactions
contemplated hereby in the capacity of broker, agent or finder or in any similar
capacity on behalf of Purchaser.

         3.3      CERTAIN REPRESENTATIONS OF PURCHASER. Purchaser has
satisfactorily conducted its own due diligence with respect to the NetCure
Business and the Purchased Assets and assessed for itself the future market
potential of the NetCure Business and the Purchased Assets.

                                                                              16
<PAGE>

SECTION 4.  CERTAIN COVENANTS OF THE PARTIES.

         4.1      REASONABLE ACCESS. Prior to the Closing, Seller shall afford
Purchaser and its representatives (including but not limited to its Affiliates,
accountants, attorneys, advisors and representatives) reasonable access to
Seller's offices, facilities, properties, books, records and personnel in order
to complete its business, financial, legal and accounting due diligence,
including but not limited to an investigation of the Purchased Assets and the
representations and warranties of Seller made herein, and Seller shall to
furnish such additional financial, operating and other information as Purchaser
and its counsel, accountants and other authorized representatives shall from
time to time reasonably request. Without limiting the foregoing, Seller shall
provide personnel records, salary/performance, immigration status and similar
information relating to the Designated Employees to Purchaser promptly after the
date hereof. No information obtained by Purchaser or disclosure made by any
Seller pursuant to this Section 4.1, however, shall affect or limit the scope of
any warranty, representation or covenant of any Seller contained herein or in
any other Transaction Document or limit Seller's liability for damages for any
breach of any such warranty, representation or covenant.

         4.2      CONFIDENTIALITY.

                  (a) Seller agrees, and shall cause its Subsidiaries and its
and their respective agents, representatives, employees, officers and directors,
to: (i) treat and hold as confidential, and not disclose or provide access to
any Person to, any and all information relating to trade secrets, processes,
patent or trademark applications, product development, price, customer and
supplier lists, pricing and marketing plans, policies and strategies, operations
methods, product development techniques, business acquisition plans, new
personnel acquisition plans and any other confidential information relating
exclusively to or which is specific to the NetCure Business or to or included in
the Purchased Assets (including but not limited to all any and all source code
included in the Purchased Assets); (ii) in the event that Seller or any such
Subsidiary, agent, representative, employee, officer or director becomes legally
compelled to disclose any such information, provide Purchaser with prompt
written notice of such requirement so that Purchaser may seek a protective order
or other remedy or waive compliance with this Section; (iii) in the event that
such protective order or other remedy is not obtained prior to the date on which
such disclosure is required, or Purchaser waives compliance with this Section,
furnish only that portion of such confidential information which is legally
required to be provided and exercise commercially reasonable efforts to obtain
assurances that confidential treatment will be accorded such information.

                  (b) Seller shall promptly furnish (prior to, at, or as soon as
practicable following, the Closing) to Purchaser any and all copies (in whatever
form or medium) of all such confidential information then in the possession of
Seller or any of its Subsidiaries or its or their respective agents,
representatives, employees, officers and directors and maintain in strict
confidence as corporate records any and all additional copies then in the
possession of Seller or any of its Subsidiaries or its or their respective
agents, representatives, employees, officers and directors of such information
and of any analyses, compilations, studies or other documents prepared, in whole
or in part, on the basis thereof with access to such material limited to the

                                                                              17
<PAGE>

board of directors and officers of Seller on a "need-to-know" basis;
provided, that this sentence shall not apply to any information that, at the
time of disclosure, is in the public domain and was not disclosed in breach
of this Agreement by Seller or any of its Subsidiaries or its or their
respective agents, representatives, employees, officers or directors;
provided, further, that any combination of features or functions shall not be
deemed to be within the public domain merely because the individual features
or functions are in the public domain unless the combination itself and its
principle of operation are in the public domain. Seller agrees and
acknowledges that remedies at law for any breach of its obligations under
this Section are inadequate and that in addition thereto Purchaser shall be
entitled to seek equitable relief, including injunction and specific
performance, in the event of any such breach, without the necessity of
demonstrating the inadequacy of money damages. Seller hereby waives, on its
own behalf and on behalf of each of its Subsidiaries and its and their
respective agents, representatives, employees, officers or directors, the
requirement of posting any bond or other security in connection with any such
equitable relief.

         4.3      CONDUCT PRIOR TO THE CLOSING.

                  (a) From the date hereof until the Closing, Seller shall: (i)
conduct the NetCure Business only in the ordinary course consistent with past
practice, perform its obligations under all agreements binding upon it with
respect to the NetCure Business or included among the Purchased Assets; (ii)
conduct the NetCure Business in accordance with all Applicable Laws; (iii)
maintain business insurance consistent with prudent business practice; (iv) use
reasonable efforts to preserve the NetCure Business's business organization
intact and to keep available the services of the Designated Employees, provided,
however, that this provision shall not prohibit Seller from discharging any of
the Designated Employees for cause; (v) maintain and preserve the goodwill of
the suppliers, customers and others having business relations with the NetCure
Business; and (vi) inform Purchaser in advance of any material capital
expenditures and promptly of any other material developments in respect of the
NetCure Business or Purchased Assets.

                  (b) Except as otherwise contemplated by this Agreement or
permitted by the prior written consent of Purchaser, Seller shall not (and shall
not permit any of its Affiliates to) (i) create or permit to exist any
Encumbrance on any of the Purchased Assets (other than Permitted Encumbrances
and the encumbrances set forth in Section 2.5 of the Disclosure Schedule); (ii)
sell or lease, or enter into any agreement with any other person or entity for
the sale or lease, directly or indirectly, of any of the Purchased Assets (other
than sales of inventory or the disposition of obsolete equipment made in the
ordinary course of business); (iii) amend or otherwise modify the terms of any
Intellectual Property Rights (or any license thereof) included among the
Purchased Assets or grant any license of sublicense under or in respect of any
of the Purchased Assets other than licenses to customers and suppliers entered
into in the ordinary course of business consistent with past practice; (iv)
amend or otherwise modify the terms of any Governmental Authorization or Private
Authorization other than in the ordinary course of business or in any manner
adverse to the NetCure Business; (v) violate any Applicable Law relating to the
operation of the NetCure Business or the Purchased Assets; (vi) modify, alter,
restate or amend the certificate of incorporation or bylaws of Seller in any
manner which would

                                                                              18
<PAGE>

affect the validity, binding nature or enforceability of this Agreement; or
(vii) knowingly engage in any practice, take any action or omit to take any
action or enter into any transaction that would render any of the warranties
and representations of Seller contained in this Agreement to be or become
untrue in any material respect.

                  (c) Seller shall (i) promptly notify Purchaser of (i) any
event that renders any representation or warranty of Seller hereunder untrue
in any material respect or that constitutes a material breach of any Seller's
covenants hereunder, and (ii) any material development affecting the ability
of Seller to consummate the transactions contemplated by this Agreement. No
disclosure by Seller pursuant to this Section 4.3, however, shall affect or
limit the scope of any warranty, representation or covenant of Seller
contained in this Agreement or in any other Transaction Document, or limit
Seller's liability for damages incurred for any breach of any such warranty,
representation or covenant.

         4.4      NO SOLICITATION; PUBLIC ANNOUNCEMENTS.

                  (a) Between the date of this Agreement and the Closing, Seller
shall not, directly or indirectly, through any officer, director, employee,
Affiliate or agent or otherwise, take any action to solicit, initiate, seek,
entertain, encourage or support any inquiry, proposal or offer from, furnish any
information to, or participate in any negotiations with, any third party
regarding any direct or indirect acquisition of the NetCure Business or
Purchased Assets, or any acquisition of any material portion of the assets of
the NetCure Business or Purchased Assets, including the grant of any license to
any Intellectual Property Rights included among the Purchased Assets (other than
licenses in the ordinary course of business related to the sale of the Seller's
products). Seller agrees that any such negotiations (other than negotiations
with Purchaser) in progress as of the date of this Agreement will be suspended
during such period and that Seller will not accept or enter into any agreement,
arrangement or understanding regarding any such third party acquisition
transaction during such period.

                  (b) If Seller or any of its officers, directors, employees,
Affiliates or agents receives any proposal for, or inquiry respecting, any third
party acquisition transaction involving, directly or indirectly, the NetCure
Business or Purchased Assets, or any request for nonpublic information in
connection with any such proposal or inquiry, Seller shall promptly notify
Purchaser, describing in detail the identity of the Person making such proposal
or inquiry and the terms and conditions of such proposal or inquiry.

                  (c) The parties shall not make any public announcement
concerning this Agreement, their discussions or any other documents or
communications concerning the transactions contemplated hereby without the prior
written approval of the other party (which shall not be unreasonably withheld,
conditioned or delayed), unless advised by counsel that such disclosure is
required by law (in which case the party so advised shall promptly notify the
other party).

         4.5      CONSENTS. As soon as practicable after the date hereof, Seller
shall use all commercially reasonable efforts, and Purchaser shall cooperate
with such efforts, to obtain all of

                                                                              19
<PAGE>

the Seller Consents, in form and substance reasonably acceptable to
Purchaser, and other consents as may be necessary or are, in the reasonable
judgment of Purchaser, advisable to permit the assignment and transfer of the
Purchased Assets (including but not limited to the Intellectual Property
Rights included among the Purchased Assets) to Purchaser, and otherwise to
consummate the transactions contemplated hereby.

         4.6      ACCESS AFTER CLOSING. Seller hereby agrees that from and after
the Closing, Purchaser and its authorized representatives shall have reasonable
access during normal business hours and upon reasonable advance notice to Seller
to all books, records and documents which concern transactions or are otherwise
related to the NetCure Business or the Purchased Assets prior to the Closing for
purposes of inspection and copying thereof in connection with any claim or
action by or against Purchaser in connection with the NetCure Business or
preparing any historical financial statements (whether audited or unaudited)
with respect to the NetCure Business. Seller shall maintain such books, records
and documents for a period of not less than five (5) years following Closing.
Seller shall reasonably cooperate with Purchaser and will, at Purchaser's cost,
produce such personnel, documents and other data at its disposal and grant
Purchaser such access to Seller's auditors as Purchaser may reasonably request
pertinent to any claim or action by or against Purchaser in connection with the
NetCure Business or in connection with the preparation of any such financial
statements (whether audited or unaudited) with respect to the NetCure Business
for periods beginning prior to the Closing Date. Seller will similarly cooperate
with Purchaser in investigating and pursuing any matter concerning taxes, claims
or litigation and will use commercially reasonable efforts to aid Purchaser in
securing such cooperation of others as may be needed in connection with any such
matter.

         4.7      DESIGNATED EMPLOYEES. Purchaser will, prior to the Closing,
offer at-will employment to all of the Designated Employees, with respective
benefits and compensation which, taken as a whole, are not less favorable than
the respective benefits and compensation presently enjoyed by them as employees
of Seller.

         4.8      CERTAIN OTHER COVENANTS.

                  (a) At the Closing Purchaser and Seller shall execute and
deliver a Program License Agreement, substantially in the form of Program
License Agreement attached hereto as EXHIBIT C (the "LICENSE AGREEMENT").

                  (b) Seller will use its best efforts, both before and to the
extent necessary after the Closing, to cause the presentation and mapping and
other software licensed to Seller pursuant to a License Agreement, dated as of
March 10, 2000, between Tom Sawyer Software Corporation and Seller to be
transferred to Purchaser in accordance with the provisions of such license
agreement and shall deliver all copies of source code, object code and other
documentation relating thereto to Purchaser concurrently with such transfer.

                  (c) At the Closing Purchaser shall execute and deliver to
Seller a Reseller Agreement, substantially in the form of Reseller Agreement
attached hereto as EXHIBIT D (the "RESELLER AGREEMENT"),

                                                                              20
<PAGE>

         4.9      TRANSITION SERVICES. For a period of thirty (30) days from
and after the Closing, Seller shall provide reasonable office space,
telephone and other utility and communications services and secretarial
services (on a basis substantially consistent, taken as a whole, with such
services as presently utilized in the conduct of the NetCure Business) for
the NetCure Business at Seller's principal place of business in Burlington,
Massachusetts. Such period may be extended by Purchaser for an additional
period of up to thirty (30) days, subject to the consent of Seller, which
consent shall not be unreasonably withheld or delayed. Purchaser shall pay to
Seller, within ten (10) business days after the end of such period an amount
equal to $66.67 per day per person who utilizes such services.

SECTION 5.  CONDITIONS PRECEDENT TO PURCHASER'S OBLIGATIONS.

         Purchaser's obligations to consummate the transactions contemplated by
this Agreement shall be subject to the satisfaction of each of the following
conditions precedent at or prior to the Closing:

         5.1      REPRESENTATIONS AND WARRANTIES; PERFORMANCE. The
representations and warranties of Seller contained herein shall be true and
accurate in all material respects as of the date hereof and as of the Closing
Date, Seller shall have performed and complied, in all material respects, with
all agreements, obligations and conditions required by this Agreement to be
performed or complied with by them on or prior to the Closing Date, and Seller
shall have delivered to Purchaser certificates, dated as of the Closing Date and
signed by the chief executive and chief financial officers of Seller, to such
effect.

         5.2      DESIGNATED EMPLOYEES. At least five of the Designated
Employees shall have accepted, in writing, employment with Purchaser on the
terms contemplated above in Section 4.7, and at least three of Messrs. Devlin,
Penny, Fandel and Massey shall have accepted, in writing, employment with
Purchaser on the terms contemplated above in Section 4.7.

         5.3      LEGAL PROCEEDINGS; CHANGES IN LAW. There shall be no
injunction, writ, decree, temporary restraining order or any order or other Law
of any nature issued by any Authority directing that the transactions
contemplated by this Agreement not be consummated. There shall not have been any
action taken or threatened to be taken, or any Law promulgated, enacted,
entered, enforced or deemed applicable to this Agreement or the transactions
contemplated hereby by or before any Authority, that in the reasonable judgment
of Purchaser would prohibit consummation of the transactions contemplated in
this Agreement, or require the divestiture by Purchaser of all or any portion of
the NetCure Business or the Purchased Assets or impose any material limitation
on the ability of Purchaser to conduct the NetCure Business or to own and
operate the Purchased Assets.

         5.4      CONSENTS.  All of the Seller Consents shall have been
obtained.

         5.5      OPINION OF COUNSEL TO SELLER. Seller shall have delivered to
Purchaser, and to Purchaser's counsel, (i) an opinion of Hale and Dorr LLP
substantially in the form of opinion

                                                                              21
<PAGE>

attached hereto as EXHIBIT E; and (ii) an opinion of Richards, Layton &
Finger LLP substantially in the form of opinion attached hereto as EXHIBIT F.

         5.6      LICENSE AGREEMENT.  Seller shall have executed and delivered
to Purchaser the License Agreement.

         5.7      CERTIFICATES AND INSTRUMENTS. Seller shall have delivered to
Purchaser at or prior to the Closing such other certificates (including but not
limited to (i) a certificate of legal existence and good standing, dated on or
about the Closing Date, issued by the Secretary of State of Delaware with
respect to Seller, (ii) a copy of the certificate of incorporation of Seller
certified, on or about the Closing Date, by the Secretary of State of Delaware,
and (iii) a certificate of the Secretary of Seller, dated the Closing Date, with
respect to the bylaws of Seller, resolutions of the Board of Directors of Seller
approving this Agreement, the other Transaction Documents and the transactions
contemplated hereby and thereby, and the incumbency and signatures of the
officers of Seller), instruments of assignment and conveyance and other
documents, in form and substance reasonably satisfactory to Purchaser, as the
Purchaser may reasonably request.

         5.8      ACTIONS TAKEN. All actions to be taken by Seller in connection
with consummation of the transactions contemplated hereby and all certificates,
opinions, instruments, and other documents required to effect the transactions
contemplated hereby will be reasonably satisfactory in form and substance to
Purchaser.

SECTION 6.  CONDITIONS TO THE SELLER'S OBLIGATIONS.

         Seller's obligations to consummate the transactions contemplated by
this Agreement shall be subject to the satisfaction of each of the following
conditions precedent at or prior to the Closing:

         6.1      REPRESENTATIONS AND WARRANTIES; PERFORMANCE. The
representations and warranties of Purchaser contained herein shall be true and
accurate, in all material respects, as of the date hereof and as of the Closing
Date, Purchaser shall have performed and complied, in all material respects,
with all agreements, obligations and conditions required by this Agreement to be
performed or complied with by it on or prior to the Closing Date, and Purchaser
shall have delivered to Seller a certificate to such effect.

         6.2      RESELLER AND ASSUMPTION  AGREEMENT.  Purchaser shall have
executed and delivered to Purchaser the Reseller Agreement and the Assumption
Agreement.

         6.3      LEGAL PROCEEDINGS; CHANGES IN LAW. There shall be no
injunction, writ, decree, temporary restraining order or any order of any nature
issued by any Authority directing that the transactions contemplated by this
Agreement not be consummated. There shall not have been any action taken, or any
statute, rule, regulation, judgment, order or injunction promulgated, enacted,
entered, enforced or deemed applicable to this Agreement or the transactions
contemplated hereby by or before any Authority, that would prohibit consummation
of the transactions contemplated in this Agreement.

                                                                              22
<PAGE>

SECTION 7.  TERMINATION.

         7.1      TERMINATION. Anything herein to the contrary notwithstanding,
this Agreement may be terminated prior to the Closing: (i) at any time by mutual
written consent of Purchaser and Seller; or (ii) by Purchaser by written notice
to Seller at any time on or after the date hereof so long as Purchaser is not in
material breach of its obligations hereunder at the time of termination; or
(iii) by Seller by written notice to Purchaser at any time after November 16,
2001 so long as Seller is not in material breach of its obligations hereunder at
the time of termination. In the event of termination of this Agreement by either
Purchaser or Seller pursuant to the foregoing clause (ii) or (iii), this
Agreement shall terminate without further action by any of the parties hereto
and all obligations of the parties hereunder shall terminate; provided that any
such termination of this Agreement shall not limit or impair any remedies that
either Purchaser or Seller may have with respect to a breach or default by the
other of its representations, warranties, covenants or agreements or obligations
hereunder.

         7.2      DEPOSIT. In the event that this Agreement is terminated prior
to the Closing for any reason (other than by Seller pursuant to Section 7.1(iii)
if at the time of such termination (i) Purchaser shall be in material breach of
its obligations hereunder and (ii) Seller shall have given Purchaser written
notice of such breach at least ten (10) days prior to such termination, which
notice shall describe such breach in reasonable detail, and Purchaser shall not
have cured such breach prior to such termination of this Agreement), Seller
shall forthwith pay and return to Purchaser the full amount of the Deposit,
without interest.

SECTION 8.  SURVIVAL AND INDEMNIFICATION.

         8.1      SURVIVAL.

                  (a) The respective representations and warranties of Seller
and Purchaser in this Agreement (including the Disclosure Schedule hereto) shall
expire at Closing except that the following representations and warranties
contained in the following specified provisions of this Agreement (including
related portions of the Disclosure Schedule hereto) shall survive the Closing
indefinitely (collectively, the "SURVIVING REPRESENTATIONS AND WARRANTIES"):
Sections 2.1, 2.2, 2.5, 2.6, 2.7, 2.8 and 3.1.

                  (b) Except as otherwise expressly provided in Section
8.1(a) hereof:

                  (i) Seller's Surviving Representations and Warranties and
         covenants contained in this Agreement shall survive the execution and
         delivery of this Agreement, any investigation by Purchaser of Seller,
         the Purchased Assets or the NetCure Business, the Closing and the
         consummation of the transactions contemplated by this Agreement; and

                  (ii) Purchaser's Surviving Representations and Warranties
         contained in this Agreement shall survive the execution and delivery of
         this Agreement, any investigation by Seller of Purchaser, the Closing
         and the consummation of the transactions called for by this Agreement.

                                                                              23
<PAGE>

         8.2      INDEMNIFICATION BY SELLER. From and after the Closing, Seller
shall indemnify and hold harmless Purchaser and its stockholders, directors,
officers, employees, agents, accountants, attorneys, successors and assigns from
and against any and all damages, judgments, actions, claims, demands, losses,
liabilities, costs and expenses (collectively, "LOSSES"), including but not
limited to reasonable costs of investigation and legal and accounting fees and
expenses, which may arise out of (i) any of debts, liabilities or obligations of
Seller other than the Assumed Liabilities; (ii) any breach of any of Seller's
Surviving Representations and Warranties or any inaccuracy or misrepresentation
in any certificate delivered in accordance with the terms of this Agreement by
or on behalf of Seller at or prior to the Closing; (iii) any breach of any
covenant of Seller made in this Agreement or any other Transaction Document;
(iv) the ownership, operation or conduct of Seller's assets (including the
Purchased Assets) or business (including the NetCure Business) prior to the
Closing Date; (v) any income, gains, transfer or other tax liabilities or
obligations (including any tax liabilities required to be paid through any
withholding obligations) arising from this Agreement or the consummation of the
transactions contemplated hereby; (vi) any claim or action asserted by any third
party arising out of or in connection with (A) any event, act or omission by
Seller or any Affiliate or agent of Seller occurring prior to the Closing Date
or (B) the ownership, operation or conduct of Seller's assets (including the
Purchased Assets) or business (including the NetCure Business) prior to the
Closing Date, other than the Assumed Liabilities; (vii) the failure to obtain
any of the Seller Consents at or prior the Closing, whether or not Purchaser
waives, in whole or in part, the condition precedent to its obligations to
consummate the transactions contemplated by this Agreement set forth in Section
5.4; or (viii) any severance, bonus, vacation and/or other employment-related
claims that any of the Designated Employees may have under (A) any applicable
contracts between such Designated Employee and Seller, including without
limitation the contracts listed in Section 2.9 of the Disclosure Schedule or (B)
any applicable statutory laws, including without limitation the laws of United
States and United Kingdom, in connection with the transactions contemplated
herein or Designated Employee's relationship with Seller.

         8.3      INDEMNIFICATION BY PURCHASER. From and after the Closing,
Purchaser shall indemnify and hold harmless Seller and its stockholders,
directors, officers, employees, agents, accountants, attorneys, successors and
assigns from and against any and all Losses which may arise out of (i)
Purchaser's breach of any of Purchaser's Surviving Representations and
Warranties or any inaccuracy or misrepresentation in any certificate delivered
in accordance with the terms of this Agreement by or on behalf of Purchaser at
or prior to the Closing; (ii) any breach of any covenant of Purchaser made in
this Agreement or any of the other Transaction Document; or (iii) any of the
Assumed Liabilities.

         8.4      CERTAIN LIMITATIONS ON INDEMNIFICATION.  Anything in this
Section 8 to the contrary notwithstanding:

                  (a) Seller's aggregate liability under Section 8.2(ii) in
respect of Losses arising from breaches of Seller's Surviving Representations
and Warranties and Section 8.2(vii) shall not exceed $2,500,000.

                                                                              24
<PAGE>

                  (b) Purchaser's aggregate liability under Section 8.3(i) in
respect of Losses arising from breaches of Purchaser's Surviving Representations
and Warranties shall not exceed $2,500,000.

         8.5      NOTICE OF AND RIGHT TO DEFEND THIRD PARTY CLAIMS. Promptly,
upon receipt of notice of any claim or the commencement of any suit, action or
proceeding by a third party in respect of which indemnity may be sought on
account of an indemnity contained in Section 8.2 or 8.3, the party seeking
indemnity (the "INDEMNITEE") shall give notice in writing to the party from whom
indemnification is sought (the "INDEMNITOR"). The failure by such Indemnitee so
to notify promptly such Indemnitor of any such claim or action shall not relieve
such Indemnitor from any liability which it may have to such Indemnitee in
connection therewith, except to the extent that the Indemnitor is actually
prejudiced by such failure. In case any claim shall be asserted or suit, action
or proceeding commenced against an Indemnitee, the Indemnitor will be entitled
to participate therein, and, to the extent that it may wish, to assume the
defense, conduct or settlement thereof; provided, that such settlement is for
the payment of money only, and does not impose any obligation or limitation on
the Indemnitee or the ability of the Purchaser to manage and operate all or any
part of the Purchased Assets. After notice from the Indemnitor to the Indemnitee
of its election so to assume the defense, conduct or settlement thereof, the
Indemnitor will not be liable to the Indemnitee for any legal or other expenses
subsequently incurred by the Indemnitee in connection with the defense, conduct
or settlement thereof (but the Indemnitee may, through its own counsel and at
its own expense, participate in the defense of any claim so assumed by the
Indemnitor). The Indemnitee will reasonably cooperate, at the Indemnitor's sole
cost and expense, with the Indemnitor in connection with any such claim assumed
by the Indemnitor to make available to the Indemnitor all pertinent information
under the Indemnitee's control. The Indemnitee will not consent to the entry of
a judgment or enter into any settlement with respect to the matter without the
written consent of the Indemnitor (not to be unreasonably withheld or delayed).
The Indemnitor will not consent to the entry of a judgment with respect to the
matter or enter into any settlement which does not include a provision whereby
the plaintiff or claimant in the matter releases the Indemnitee from all
liability with respect thereto, without the written consent of the Indemnitee
(not to be unreasonably withheld or delayed).

SECTION 9.  CERTAIN DEFINITIONS.

         9.1      PRINCIPLES OF CONSTRUCTION. Terms defined in the singular
shall have a comparable meaning when used in the plural, and VICE VERSA, and
the reference to any gender shall be deemed to include all genders. Except
where the context otherwise requires, references to "this Section" or words
of similar import shall be deemed to refer to the entire section and not a
particular subsection and references to "hereunder," "herein," "hereof" or
words of similar import shall be deemed to refer to this entire Agreement and
not the particular section or subsection or other provision. The words
"includes" and "including" are not limiting and mean "including but not
limited to". In computation or periods of time from a specified date to a
later specified date, the word "from" means "from and including," the words
"to" and "until" each means "to but excluding," and the word "through" means
"to and including." Unless otherwise defined or the context otherwise clearly
requires, terms for which meanings are provided in this

                                                                              25
<PAGE>

Agreement shall have such meanings when used in any schedule hereto
(including the Disclosure Schedule) and each Instrument, notice, certificate,
communication, opinion or other document executed or required to be executed
pursuant hereto or thereto or otherwise delivered, from time to time,
pursuant hereto or thereto. All accounting terms not specifically defined
herein shall be construed in accordance with GAAP. References to any statute
or regulation are to be construed as including all statutory and regulatory
provisions consolidating, amending or replacing such statute or regulation.

         9.2      CERTAIN DEFINED TERMS.  The following terms shall have the
respective meanings specified therefor below:

         "AFFILIATE", when used with respect to any specified Person, shall mean
any Person that directly, or indirectly through one or more intermediaries,
controls or is controlled by or is under common control with such specified
Person.

         "AGREEMENT" is defined in the preamble preceding the recitals to this
Agreement.

         "APPLICABLE LAW" shall mean any Law of any Authority, whether domestic
or foreign, including all federal and state Laws, including without limitation
any: (a) administrative, executive, judicial, legislative or other statute,
code, consent decree, constitution, decree, directive, enactment, finding,
guideline, injunction, interpretation, judgment, law, order, ordinance, policy
statement, proclamation, promulgation, regulation, requirement, rule, rule of
law, rule of public policy, settlement agreement, or writ, of any Authority; (b)
common law or other legal or quasi-legal precedent; or (c) arbitrator's,
mediator's or referee's award, decision, finding or recommendation, or, in any
case, any particular section, part or provision thereof.

         "ASSIGNED THIRD PARTY LICENSE AGREEMENTS" is defined in Section 1.1.

         "ASSUMED LIABILITIES" is defined in Section 1.2.

         "ASSUMPTION AGREEMENT" is defined in Section 1.2.

         "AUTHORITY" shall mean any governmental or quasi-governmental
authority, whether administrative, executive, judicial, legislative or other,
or any combination thereof, including any federal, state, territorial,
county, municipal or other government or governmental or quasi-governmental
agency, arbitrator, authority, board, body, branch, bureau, central bank or
comparable agency or entity, commission, corporation, court, department,
instrumentality, master, mediator, panel, referee, system or other political
unit or subdivision or other entity of any of the foregoing, whether domestic
or foreign.

         "BUSINESS" is defined in Section 1.1.

         "CLOSING" is defined in Section 1.5.

         "CLOSING DATE" is defined in Section 1.5.

                                                                              26
<PAGE>

         "CODE" shall mean the United States Internal Revenue Code of 1986, and
the rules and regulations thereunder, all as from time to time in effect, or any
successor law, rules or regulations, and any reference to any statutory or
regulatory provision shall be deemed to be a reference to any successor
statutory or regulatory provision.

         "COMMISSION" shall mean the Securities and Exchange Commission or any
successor Authority thereto.

          "CONTRACTUAL OBLIGATION" shall mean, with respect to any Person, any
term, condition, provision, representation, warranty, agreement, covenant,
undertaking, commitment, indemnity or other obligation set forth or which is
outstanding or existing under any Instrument (including without limitation any
Instrument relating to or evidencing any indebtedness or capital lease
obligation) to which such Person is a party or by which it or any of its
properties is bound.

          "CUSTOMER AGREEMENTS" is defined in Section 1.1.

          "DEPOSIT" is defined in Section 1.5.

          "DESIGNATED EMPLOYEE" is defined in Section 2.9. .

          "DISPUTE" is defined in Section 10.4.

          "ENCUMBER" or "ENCUMBRANCE" shall mean any of the following:
mortgage; lien (statutory or other); preference, priority or other security
agreement, arrangement or interest; hypothecation, pledge or other deposit
arrangement; assignment; charge; levy; executory seizure; attachment;
garnishment; encumbrance (including any easement, exception, variance,
reservation or limitation, right of way, zoning restriction, building or use
restriction, and the like); conditional sale, title retention or other
similar agreement, arrangement, device or restriction; preemptive or similar
right; any financing lease involving substantially the same economic effect
as any of the foregoing; the filing of any financing statement under the
Uniform Commercial Code or comparable law of any jurisdiction; restriction on
sale, transfer, assignment, disposition or other alienation; or any option,
license, equity, claim or right of or obligation to, any other Person, of
whatever kind and character.

         "ENTITY" shall mean any corporation, firm, unincorporated organization,
association, partnership, limited liability company, a trust (inter vivos or
testamentary), an estate of a deceased, insane or incompetent individual,
business trust, joint stock company, joint venture or other organization, entity
or business, whether acting in an individual, fiduciary or other capacity, or
any Authority.

         "EVENT" shall mean the occurrence or existence of any act, action,
activity, circumstance, condition, event, fact, failure to act, incident or
practice, or any set or combination of any of the foregoing.

         "EXCHANGE ACT" shall mean the Securities Exchange Act of 1934, and the
rules and regulations of the Commission thereunder, all as from time to time in
effect, or any successor

                                                                              27
<PAGE>

law, rules or regulations, and any reference to any statutory or regulatory
provision shall be deemed to be a reference to any successor statutory or
regulatory provision.

         "EXCLUDED ASSETS" is defined in Section 1.1.

         "GAAP" shall mean, with respect to any Person, except to the extent
that a deviation therefrom is expressly required by this Agreement, generally
accepted accounting principles applied on a consistent basis (a) as set forth in
Opinions of the Accounting Principles Board of the American Institute of
Certified Public Accountants ("AICPA") and/or in statements of the Financial
Accounting Standards Board that are applicable in the circumstances as of the
date in question, (b) when not inconsistent with such opinions and statements,
as set forth in other AICPA publications and guidelines and/or (c) that
otherwise arise by custom for the particular industry. The requirement that such
principles be consistently applied means that the accounting principles in a
current period are comparable in all material respects to those applied in
preceding period. All accounting and financial terms used in this Agreement, all
determinations and computations required to be made pursuant to the provisions
of this Agreement, and the compliance with each covenant contained in this
Agreement that relates to financial matters shall, except as otherwise
specifically provided to the contrary, be determined in accordance with GAAP as
defined in this paragraph.

         "GOVERNMENTAL AUTHORIZATIONS" shall mean all approvals, concessions,
consents, exemptions, franchises, licenses, permits, plans, registrations and
other authorizations of and all reports and notices to and filings with all
Authorities.

         "INDEMNITEE" is defined in Section 8.5.

         "INDEMNITOR" is defined in Section 8.5.

         "INSTRUMENT" shall mean any agreement, bond, contract, debenture,
indenture, lease, letter of credit, mortgage, note, commitment, memorandum,
certificate, notice, document or other writing (whether by formal agreement,
letter or otherwise), or any oral arrangement, understanding or commitment,
under which any debt, liability or other obligation is evidenced, assumed or
undertaken, or any Encumbrance (or right or interest therein) is granted,
perfected or exists.

         "INTELLECTUAL PROPERTY RIGHTS" is defined in Section 2.8.

         "IRS" or the "SERVICE" shall mean the United States Internal Revenue
Service or any successor Authority thereto.

         "LAW" shall mean any action, approval, authorization, code, consent
decree, constitution, demand, decree, directive, enactment, finding, guideline,
injunction, interpretation, judgment, law, license, order, ordinance, permit,
policy statement, proclamation, promulgation, regulation, requirement, rule,
rule of law, rule of public policy, settlement agreement, statute, or writ, or
the common law, or any particular section, part or provision thereof, or any
interpretation, directive,

                                                                              28
<PAGE>

guideline or request (whether or not having the force of law), of any
Authority, including without limitation the judicial systems thereof, or any
particular section, part or provision thereof.

         "LEASE" shall mean any lease of property, whether real, personal or
mixed.

         "LEGAL ACTION" shall mean, with respect to any Person, any litigation
or legal or other actions, arbitrations, investigations, proceedings or suits,
at law or in arbitration, equity or admiralty (whether or not purported to be
brought on behalf of such Person) affecting such Person or any of its business
or property or assets.

         "LICENSE AGREEMENT" is defined in Section 4.8.

         "LICENSED PROGRAMS" shall have the meaning specified therefor in the
License Agreement.

         "LICENSED-IN INTELLECTUAL PROPERTY RIGHTS" is defined in Section 2.8.

         "LOSSES" is defined in Section 8.2.

         "MATERIAL ADVERSE" or "MATERIALLY AND ADVERSELY" when used alone or
in conjunction with other terms (including without limitation "Affect,"
"Change" and "Effect") with respect to any Person, business or assets shall
mean any Event or set of Events which could be reasonably expected to (a)
have any material adverse effect upon or result in any material adverse
change in the validity or enforceability of this Agreement or any of the
other Transaction Documents, (b) materially and adversely affect the
business, operations, management, properties or prospects, or the condition,
financial or other, or results of operation of such Person and its
Subsidiaries taken as a whole or such business or assets, as applicable, (c)
materially impair such Person's ability to fulfill its obligations under the
terms of this Agreement or any other Transaction Document, or (d) materially
and adversely affect the aggregate rights and remedies of Purchaser or under
this Agreement or any other Transaction Document; provided that in no event
shall any of the following constitute a Material Adverse Effect on Seller:
(i) net losses of Seller and its Subsidiaries from operations in the normal,
usual and customary manner in the ordinary and regular course of business,
consistent with past practice, of Seller and its Subsidiaries, (ii) a change
in the market price or trading volume of the Seller common stock, (iii) any
adverse Event principally attributable to conditions affecting the industries
in which Seller and its Subsidiaries participate, or the U.S. economy, as a
whole, or (iv) any failure by Seller to meet internal projections or
forecasts, analysts' expectations or published revenue or earnings
predictions for any period ending (or for which revenues or earnings are
released) on or after the date of this Agreement.

          "OWNED INTELLECTUAL PROPERTY RIGHTS" is defined in Section 2.8.

          "PERMITTED ENCUMBRANCES" shall mean the following: (a) liens for
taxes, assessments and governmental charges not yet due and payable; (b) rights
reserved to any Authority to regulate the affected property; (c) as to leased
assets, interests of lessors and encumbrances

                                                                              29
<PAGE>

affecting the interests of the lessors; and (d) Encumbrances arising under
the Customer Agreements.

         "PERSON" shall mean any human being or any Entity.

         "PRIVATE AUTHORIZATIONS" shall mean all franchises, permits, licenses,
approvals, consents, concessions and other authorizations of or notices to or
filings with all Persons (other than Authorities) including without limitation
those with respect to patents, trademarks, service marks, trade names,
copyrights, computer software programs, technology and know-how.

         "PROGRAM DOCUMENTATION" shall have the meaning specified therefor in
the License Agreement.

         "PURCHASE PRICE" is defined in Section 1.3.

         "PURCHASED ASSETS" is defined in Section 1.1.

         "PURCHASER" is defined in the preamble preceding the recitals to this
Agreement.

         "RESELLER AGREEMENT" is defined in Section 4.8.

         "SECURITIES ACT" shall mean the Securities Act of 1933, and the
rules and regulations of the Commission thereunder, all as from time to time
in effect, or any successor law, rules or regulations, and any reference to
any statutory or regulatory provision shall be deemed to be a reference to
any successor statutory or regulatory provision.

         "SELLER" is defined in the preamble preceding the recitals to this
Agreement.

         "SELLER CONSENTS" is defined in Section 2.2

         "SELLER SEC DOCUMENTS" is defined in Section 2.3.

         "SUBSIDIARY" shall mean, with respect to any Person, any Entity in
which such Person holds, directly or indirectly, a majority of the capital stock
ordinarily entitled to vote for the election of directors or a majority of the
equity interests.

         "SURVIVING REPRESENTATIONS AND WARRANTIES" is defined in Section 8.1.

         "TANGIBLE PERSONAL PROPERTY" is defined in Section 1.1.

         "TAX" or "TAXES" shall mean all taxes, charges, fees, imposts, levies
or other assessments, including, without limitation, all net income, franchise,
profits, gross receipts, capital, sales, use, ad valorem, value added, transfer,
transfer gains, inventory, capital stock, license, withholding, payroll,
employment, social security, unemployment, excise, severance, stamp, occupation,
real or personal property, and estimated taxes, water, rent and sewer service
charges, custom duties, fees, assessments and charges of any kind whatsoever,
together with any interest and any

                                                                              30
<PAGE>

penalties, fines, additions to tax or additional amounts thereon, imposed by
any Authority and shall include any transferee liability in respect of Taxes.

         "TAX RETURN" shall mean any return, declaration, report, estimate,
information return or statement required to be filed with respect to any Taxes.

         "TRANSACTION DOCUMENT" shall mean any of this Agreement, the Assumption
Agreement, the License Agreement, the Reseller Agreement, any instrument of
assignment or conveyance executed and delivered by Seller at the Closing and any
other Instrument executed or to be executed in connection with the consummation
of the transactions contemplated hereby, whether or not expressly referred to in
this Agreement.

SECTION 10.  MISCELLANEOUS PROVISIONS.

         10.1      TAXES, FEES AND EXPENSES. Seller shall be responsible for all
sales, transfer, gains or income taxes due or payable in connection with the
transactions contemplated hereby. Each of the parties hereto will pay its own
costs and expenses in connection with the negotiation, execution and performance
of this Agreement, except as otherwise expressly provided herein.

         10.2      AMENDMENT, MODIFICATION AND SEVERABILITY. No term, condition
or provision of this Agreement may be amended, modified or waived except by a
written agreement signed by the parties hereto. A waiver of any term or
condition of this Agreement shall not be deemed to be a further or continuing
waiver of any other breach of such term or condition. If any provision of this
Agreement shall be invalid, inoperative or unenforceable, such invalid,
inoperative or unenforceable provision shall be reformed to the extent necessary
so that it would be valid, operative and enforceable to the maximum extent
permitted.

         10.3      SUCCESSORS AND ASSIGNS. This Agreement shall be binding upon
and shall inure to the benefit of the parties hereto and their respective
successors and assigns, including, without limitation, successors by operation
of law pursuant to any merger, consolidation or sale of assets involving any of
the parties. Nothing in this Agreement expressed or implied is intended to and
shall not be construed to confer upon or create in any Person (other than the
parties hereto and their respective successors and assigns) any rights or
remedies under or by reason of this Agreement, including without limitation any
rights to enforce this Agreement.

         10.4     ARBITRATION; JURISDICTION.

                  (a) Any claim or controversy between the parties arising out
of or relating to this Agreement or any alleged breach hereof (collectively, a
"DISPUTE"), other than any claim for equitable relief, shall be resolved by
arbitration administered by the American Arbitration Association in accordance
with its Commercial Arbitration Rules. The parties agree that there shall be one
(1) arbitrator selected in accordance with such Commercial Arbitration Rules,
and judgment on the award rendered by the arbitrator shall be final and binding
and may be entered in any court having jurisdiction thereof. Each party shall
bear its own costs and attorney's fees, and shall share equally in the fees and
expenses of the arbitrator; provided that the arbitrator shall be empowered to
award to a prevailing party its reasonable costs, expenses and legal fees. For

                                                                              31
<PAGE>

purposes of this Section, the prevailing party is the party that most closely
obtains the relief it sought whether or not the proceeding is settled or carried
out to its conclusion. No punitive damages shall be awarded in any such
arbitration. Notwithstanding the foregoing, it is expressly agreed that either
party may seek injunctive relief or other equitable relief in an appropriate
court of law or equity pending an award in arbitration. The arbitration shall be
held in Boston, Massachusetts.

                  (b) Nothing contained herein shall be construed to prohibit or
limit a party's right to seek injunctive or other equitable relief as permitted
or contemplated by this Agreement.

         10.5      FURTHER ASSURANCES. From time to time after the date
hereof, each party hereto, at no additional cost to any other party hereto,
shall execute, acknowledge and deliver such other instruments, papers,
filings, affirmations and other documents and papers and take such other
actions as any other party hereto may reasonably request in order to more
effectively carry out the purpose and intent hereof (including but not
limited to such other instruments as Purchaser may reasonably request in
order to more effectively sell, assign, transfer and convey to and vest in
Purchaser, and to place Purchaser in possession or control of, the Purchased
Assets).

         10.6      ENTIRE AGREEMENT. This Agreement, including the Disclosure
Schedule and Exhibits hereto and other documents referred to herein which form a
part hereof constitutes the entire agreement between the parties with respect to
the subject matter hereof and supersedes all prior agreements, arrangements,
covenants, promises, conditions, understandings, inducements, representations
and negotiations, expressed or implied, written or oral, between them as to such
subject matter, including but not limited to the letter agreement, dated October
16, 2001, between Seller and Purchaser. Nothing herein shall limit the
respective rights and obligations of Seller and Purchaser under that certain
Confidentiality Agreement, dated as of August 28, 2001; provided that
Purchaser's obligations thereunder, insofar as and to the extent that they
relate to any Confidential Information (as defined therein) included among the
Purchased Assets or the Licensed Programs or Program Documentation, shall
terminate upon the Closing.

         10.7      SPECIFIC PERFORMANCE; OTHER RIGHTS AND REMEDIES. The parties
recognize that certain of their rights under this Agreement are unique and,
accordingly, the parties shall, in addition to such other remedies as may be
available to any of them at law or in equity, have the right to enforce their
rights hereunder by actions for injunctive relief and specific performance to
the extent permitted by law. The parties hereby waive any requirement for
security or the posting of any bond or other surety in connection with any
temporary or permanent award of injunctive, mandatory or other equitable relief.
The rights and remedies of the parties under this Agreement are cumulative and
are not in lieu of, but are in addition to, any other rights and remedies which
the parties shall have under or by virtue of any statute, rule or regulation or
any rule of law, or in equity, or any other agreement or obligation between the
parties or any of them.

         10.8      NOTICES. All notices and other communications which by any
provision of this Agreement are required or permitted to be given shall be given
in writing and shall be (i) mailed by first-class or express mail, postage
prepaid, (ii) sent by telegram, telecopy, electronic mail or other form of rapid
transmission, confirmed by mailing (by first class or express mail, postage

                                                                              32
<PAGE>

prepaid) written confirmation at substantially the same time as such rapid
transmission, or (iii) personally delivered to the receiving party (which
shall be an officer or other responsible party of the receiving party). All
such notices and communications shall be mailed, sent or delivered as follows:

         If to Purchaser, at:

                                    Rocket Software, Inc.
                                    2 Apple Hill Drive
                                    Natick, MA 01760
                                    Attention:  Mr. Johan Magnusson
                                            Chief Operating Officer

                                    Facsimile:  508-652-4730

         with a copy to:

                                    Lucash Gesmer & Updegrove LLP
                                    40 Broad Street
                                    Boston, MA  02109
                                    Attention:  Timothy M. Lindamood, Esq.

                                    Facsimile:  617-350-6878

         If to Seller, at:

                                    Gensym Corporation
                                    52 Second Avenue
                                    Burlington, MA 01803
                                    Attention:  Lowell B Hawkinson,
                                            Chief Executive Officer

                                    Facsimile:  781-265-7101

         with a copy to:

                                    Hale and Dorr LLP
                                    60 State Street
                                    Boston, MA  02109
                                    Attention:  John Stone, Esq.

                                    Facsimile:  617-526-5000

                                                                              33
<PAGE>

or to such other person(s), telex or facsimile number(s) or address(es) as the
party to receive any such communication or notice may have designated by written
notice to the other party pursuant to this Section 10.8.

         10.9      COUNTERPARTS. This Agreement may be executed in several
counterparts, each of which shall be deemed an original, but all of which
together shall constitute one and the same instrument, binding upon all the
parties hereto, notwithstanding that both parties are not signatories to the
original or the same counterpart. In pleading or proving any provision of this
Agreement, it shall not be necessary to produce more than one of such
counterparts. This Agreement may be executed by facsimile signature.

         10.10    SECTION HEADINGS.  The headings contained in this Agreement
are for reference purposes only and shall not in any way affect the meaning or
interpretation of this Agreement.

         10.11    GOVERNING LAW. The validity, interpretation, construction and
performance of this Agreement shall be governed by, and construed in accordance
with, the laws of the Commonwealth of Massachusetts, without giving effect to
any choice or conflict of laws provision or rule that would cause the
application of domestic substantive laws of any other jurisdiction. The United
States Federal Arbitration Act (Title 9 of the United States Code) shall govern
the interpretation of and proceedings pursuant to the arbitration provisions
contained in Section 10.4.

         10.12    NO PRESUMPTION. This Agreement shall be construed without
regard to any presumption or other rule requiring construction against the party
causing this Agreement to be drafted.

         [The remainder of this page has been intentionally left blank.]

                                                                              34
<PAGE>

         IN WITNESS WHEREOF, each of the undersigned parties has caused this
Agreement to be entered into and signed, effective and delivered as of the date
first-above written.

                                     SELLER:

                                     GENSYM CORPORATION

                                     By:      /s/ Lowell B. Hawkinson
                                         -------------------------------
                                              Lowell B. Hawkinson, Chief
                                              Executive Officer

                                     PURCHASER:

                                     ROCKET SOFTWARE, INC.

                                     By:       /s/ Johan Magnusson
                                         -------------------------------
                                               Johan Magnusson, Chief
                                               Operating Officer
<PAGE>

                                 SCHEDULE 1.1(a)

                                PURCHASED ASSETS

(iv)

         1.       U.S. Patent Application Serial No. 09/973,627 relating to
                  application for Letters Patent entitled "METHOD AND SYSTEM FOR
                  DETERMINING NETWORK TOPOLOGY."

         2.       U.S. Trademark Application Serial No. 76/242675 relating to
                  the mark "NETCURE," filed with the U.S. Patent and Trademark
                  Office on April 18, 2001.

         3.       All common law trademark rights in NETSLEUTH and BIZCURE and
                  all common law copyright rights in NETCURE, NETSLEUTH and
                  BIZCURE.

(v)

         1.       License, dated May 30, 2001, issued by Gambit Communications,
                  Inc. relating to the use of MIMIC SNMP Agent Simulator.

         2.       License, HP Order No. 80BR50948003, issued by Hewlett-Packard
                  Companies to the Seller relating to the use of HP Open View
                  NNM 6.x 250 for Windows NT.

         3.       License Agreement, dated March 20, 2000, by and between Tom
                  Sawyer Software Corporation and Seller.

(vi)

     The following parties have entered into end-user license agreements with
the Seller relating to the products set forth below opposite such parties'
names. The form of end-user license agreements for the NetSleuth and NetCure
products has previously been provided to Purchaser.

<TABLE>
<CAPTION>

                PRODUCT                          COMPANY          PURCHASE DATE    CSS EXP. DATE      LICENSE #
                -------                          -------          -------------    -------------      ---------
      <S>                                <C>                        <C>              <C>             <C>
      NetSleuth for NT, 500 nodes             TLC Companies         20-Oct-00        31-Oct-01       00-10-3165-1
      NetSleuth for NT, 500 nodes        MARCH Air Reserve Base     14-Dec-00        31-Dec-01       00-12-3187-1
      NetSleuth for NT, 500 nodes                US Army            19-Dec-00        31-Dec-01       96-09-1963-36
      NetSleuth for NT, 500 nodes        ACS Desktop Solutions,     19-Dec-00        31-Dec-01       00-12-3188-1
                                                  Inc.
      NetSleuth for NT, 500 nodes          Scientific Research      27-Dec-00        31-Dec-01       97-08-2257-5
                                               Corporation
      NetSleuth for NT, 500 nodes          Scientific Research      27-Dec-00        31-Dec-01       97-08-2257-6
                                               Corporation
</TABLE>
<PAGE>

<TABLE>
<CAPTION>
                PRODUCT                          COMPANY          PURCHASE DATE    CSS EXP. DATE      LICENSE #
                -------                          -------          -------------    -------------      ---------
      <S>                                <C>                        <C>              <C>             <C>

      NetSleuth for NT, 500 nodes          Scientific Research      27-Dec-00        31-Dec-01       97-08-2257-7
                                               Corporation
      NetSleuth for NT, 500 nodes          Scientific Research      27-Dec-00        31-Dec-01       97-08-2257-8
                                               Corporation
      NetSleuth for NT, 500 nodes          Scientific Research      27-Dec-00        31-Dec-01       97-08-2257-9
                                               Corporation
      NetSleuth for NT, 500 nodes          Scientific Research      27-Dec-00        31-Dec-01       97-08-2257-10
                                               Corporation
      NetSleuth for NT, 500 nodes          Scientific Research      27-Dec-00        31-Dec-01       97-08-2257-11
                                               Corporation
      NetSleuth for NT, 500 nodes          Scientific Research      27-Dec-00        31-Dec-01       97-08-2257-12
                                               Corporation
      NetSleuth for NT, 500 nodes         Continental Currency      10-Jan-01        31-Jan-02       01-01-3198-1
                                                Services
      NetSleuth for NT, 500 nodes             Western Union         15-Jan-01        31-Jan-02       01-01-3199-1
      NetSleuth for NT, 500 nodes         Direkt Uitzendburo BV     29-Jun-01        30-Jun-02       01-06-3288-1
      NetSleuth for NT, 500 nodes           NSWC Indian Head        24-Sep-01        30-Sep-02       01-09-3438-1
                                                Division
   NetCure MD for NT/W2K up to 1,000              Avaya             24-Sep-01        30-Sep-02       01-05-3253-4
                devices
   NetCure Frame Relay Specialist for             Avaya             24-Sep-01        30-Sep-02       01-05-3253-5
   NT/W2K - up to 1,000 Total Network
                Devices
 NetCure ATM Specialist for NT/W2K - up           Avaya             24-Sep-01        30-Sep-02       01-05-3253-6
            to 1,000 devices
</TABLE>

(viii)

     A.           The following personal property:

<TABLE>
<CAPTION>
          PROPERTY USED BY / IN                                DESCRIPTION                                 TAG#
          ---------------------                                -----------                                 ----
         <S>                      <C>                                                                       <C>
         Joe Massey               Monitor                                                                   114
         Joe Devlin               Laptop - Compaq Armada E500                                               901
         Robert Penny             Laptop - Compaq Armada M700                                               903
         Peter Fandel             Laptop - Compaq Armada M700                                               849
                                  Monitor - Compaq Trinitron 21"
         Colin Smith              Laptop - Compaq Armada M700 (Mark Scott)
         Chandu Natarajan         Laptop - Compaq Armada M700 (ID 08300OEM00096601494)
                                  Monitior - ADC Spectrum7vlr
         Hong Shi                 Laptop - Compaq Armada M700                                               872
                                  Monitor - Gateway - Vivitron17
         Jianbo Cheng             Laptop - Compaq Armada M700                                               856
         Build Computer           Apptech2 - (Gateway G6 - 200)                                             187
                                  Monitor - Gateway - Vivitron 17                                          6183
         Development/QA Lab       QA - Compaq Deskpro/512K QA - Compaq 21"
                                  Monitor QA/Dev 5 x Old Pcs w/monitors G6 200
                                  QA/Dev 3 x Old Sun boxes w 4/monitors
                                  QA/Dev 2 x Old Laptops (Compaq LTE 5280 - TOTO)
                                  Compaq Armada 700                                                        7008
                                  QA/Dev Compaq Armada M700                                                 855
</TABLE>
<PAGE>

<TABLE>
<CAPTION>
          PROPERTY USED BY / IN                                DESCRIPTION                                 TAG#
          ---------------------                                -----------                                 ----
         <S>                      <C>                                                                       <C>

                                  QA NT server (Old Machine) (NSALVO)
                                  QA Old Pc
                                  QA/Dev 2 Compaq Armada M700 Laptops                                     826, 878
         Network Hardware         Synoptics 16 Port Hub 2813                                              NC-001
                                  Intel Express 9200 WAN ethernet Router                                  NC-002
                                  Cisco LightStream 100 ATM Switch                                        NC-003
                                  Bay Networks 5005 Chassis Populated                                     NC-009
                                  Wellfleet Router 2002 with IE & 2S Ports                                NC-010
                                  FORE Systems/Alantec PowerHub                                           NC-011
                                  Bay Networks Centillion w/Extras                                        NC-013
                                  Marconi/FORE Systems ForeRunner LE Switch                               NC-012
                                  Fore (Marconi) ES 3810 Switch                                           NC-017
                                  2912 XL-EN Catalyst 10/100 Switch                                       NC-014
                                  Nortel Router S/W 13.20 Baystack Access Node                            NC-015
                                  Newbridge Vivid Yello Ridge                                             NC-016
                                  Bay Networks Bay Stack 24 Port Ethernet                                 NC-004
                                  Newbridge 36150 Mainstreet ATMnet Switch NIB                            NC-008
                                  Extreme Networks Summit2 16 + 2 Switch                                  NC-005
                                  Fore Sys "Forerunner ASX-200BX" ATM/LAN Switch                          NC-006
                                  3Com Superstack II Netbuilder 221                                       NC-007
                                  Livingston Firewall Router                                              NC-018
                                  3 Com LanPlex 6004                                                      NC-019
                                  IBM 2210                                                                NC-020
                                  Cabletron 10Base/T Hub w/Lanview                                        NC-021
                                  Bay Networks Centillion 100                                             NC-022
                                  CentreCom 3612TR                                                        NC-023
                                  Cisco 2500 (Lab Gateway 1.2.3.4)                                        NC-024
                                  Cisco 4000 Router                                                       NC-025
                                  Sun (Lab UNIX 172.27.11)                                                NC-026
                                  Cisco - IGS- Multiprotocol Router/Bridge                                NC-027
                                  3Com NetBuilder                                                         NC-028
                                  CentreCom Micro Repeater                                                NC-029
                                  Cisco 1000                                                              NC-030
                                  DEC Hub 900 MultiSwitch                                                 NC-031
                                  OmniMSS - XYLAN                                                         NC-032
                                  Lightwave Communications - ServerSwitch                                 NC-033
                                  Ascend - Pipeline 25                                                    NC-035
                                  Cisco 4000 Router                                                       NC-036
                                  Cisco 2500                                                              NC-037
                                  ForeRunner ASX 200                                                      NC-038
                                  Bay Networks BayStack 304                                               NC-039
                                  Box of Network Cards & Small Parts                                      NC-040
                                  Box of Network Cables                                                   NC-041
                                  UPS - (From CRG - TBD)
</TABLE>
<PAGE>

<TABLE>
<CAPTION>
          PROPERTY USED BY / IN                                DESCRIPTION                                 TAG#
          ---------------------                                -----------                                 ----
         <S>                      <C>                                                                       <C>

                                  3Comm SubStack Switch                                                   NC-042
                                  Pipeline P-7S                                                           NC-043
                                  Cables & Cards (box in Joe's Office)                                    NC-044
                                  HP Internet Advisor                                                     NC-045
                                  VT320 Terminal with monitor                                             NC-046
                                  Net Builder Router                                                      NC-047
                                  Network Testing Machine Gateway 2000 PC                                 NC-048
                                  Frame Relay Tester Digilog 620                                          NC-050
                                  Fore ASX 200                                                            NC-052
                                  2 Cards for NC-09 (Bay Networks 505 Chassis)                           NC -053/4
                                  Intel 520 Switch                                                        NC-055
                                  Newbridge CS 1000                                                       NC-0566
</TABLE>

     B. In addition, Seller agrees that, while Seller shall retain all of its
rights, title and interest thereto, the following assets may be used by the
Designated Employees and/or other employees of Purchaser at Seller's principal
place of business (or such other office at which such asset is located as of the
date of the Agreement) during the period in which Seller provides transition
services pursuant to Section 4.9 of the Agreement:

<TABLE>
<CAPTION>
             PROPERTY USED BY                                  DESCRIPTION                                  TAG #
             ----------------                                  -----------                                  -----
         <S>                       <C>                                                                     <C>
         Joe Massey                Dell Laptop                                                               746
         Robert Penny              Dell Laptop (Latitude)                                                    757
         Colin Smith               2 x Dell Laptop                                                         747,836
</TABLE>

     C. Furthermore, Seller agrees that (i) it will continue to perform its
obligations, agreements and responsibilities with respect to equipment leases
for the following equipment, (ii) upon termination of such equipment leases
relating thereto, Seller shall use all commercially reasonable efforts to
transfer all of its rights, title and interest to the following assets to
Purchaser, and (iii) the following assets may be used by Purchaser and its
employees until such date as Seller transfers ownership thereof to Purchaser:

<TABLE>
<CAPTION>
             PROPERTY USED BY                                  DESCRIPTION                                   TAG#
             ----------------                                  -----------                                   ----
         <S>                       <C>                                                                   <C>
         QA Testing                Sun UltraSparc 10 + Monitor (Wormer)                                  420,418
                                   Sun UltraSparc 10 + Monitor (Losotho)                                 413,439
                                   Sun UltraSparc 10 + Monitor (Red Dwarf)                               282,256
                                   Sun Monitor (Robert Penny)                                                436
</TABLE>

(x)

         None.<PAGE>
                                                                    EXHIBIT 10.1
                                                                    ------------

                            STOCK EXCHANGE AGREEMENT

     This STOCK EXCHANGE AGREEMENT (the "Agreement") is made as of November 20,
2001 by and between CMGI, Inc., a Delaware corporation (the "Company"), and
____________________ (the "Stockholder").

     WHEREAS, the Company, the Stockholder and certain other entities (including
any assignees of such other entities, the "Other Stockholders") have entered
into that certain Securities Purchase Agreement, dated as of June 29, 1999 (the
"Securities Purchase Agreement"), pursuant to which the Stockholder and the
Other Stockholders purchased from the Company shares of the Company's Series C
Convertible Preferred Stock (the "Series C Preferred Stock"), which are
convertible into shares of the Company's common stock, $.01 par value per share
(the "Common Stock"), in accordance with the terms of the Certificate of
Designations, Preferences, and Rights of the Series C Preferred Stock, as filed
with the Secretary of State of the State of Delaware on June 29, 1999 and as
corrected by the Certificate of Correction filed with the Secretary of State of
the State of Delaware on July 1, 1999 (the "Series C Certificate of
Designations");

     WHEREAS, in connection with the transactions contemplated by the Securities
Purchase Agreement, the Company, the Stockholder and the Other Stockholders
entered into that certain Registration Rights Agreement, dated as of June 29,
1999 (the "Registration Rights Agreement");

     WHEREAS, the Stockholder is the holder of the number of shares of Series C
Preferred Stock set forth immediately below its name on the signature page
hereto, including all accrued and unpaid interest thereon (the "Shares");

     WHEREAS, the Company has authorized a new series of promissory notes, in
the form attached hereto as Exhibit A (the "Notes");
                            ---------

     WHEREAS, Maktar Limited, a company organized under the laws of Ireland and
a wholly-owned subsidiary of CMGI (the "Subsidiary"), holds 448,347,107 ordinary
shares (the "PCCW Shares") of Pacific Century CyberWorks Limited ("PCCW");

     WHEREAS, the Company and the Stockholder desire to exchange, upon the terms
and conditions set forth in this Agreement, the Shares for a combination of (i)
shares of Common Stock from the Company, (ii) a Note and (iii) cash;

     WHEREAS, the Company and the Stockholder desire to terminate the Securities
Purchase Agreement, other than Section 8(I) of the Securities Purchase Agreement
(solely as it relates to third party claims), and the Registration Rights
Agreement, other than Sections 6 and 7 of the Registration Rights Agreement; and
<PAGE>

     WHEREAS, contemporaneously with the execution and delivery of this
Agreement, the Company, the Subsidiary and the Stockholder are executing and
delivering an exchange agreement (the "Subsidiary Exchange Agreement") pursuant
to which the Stockholder is exchanging the Note it receives at the Closing (as
defined below) with the Subsidiary for its obligation to deliver a certain
number of freely tradable ordinary shares of PCCW and the Other Rights (as
defined in the Subsidiary Exchange Agreement).

     NOW, THEREFORE, in consideration of the mutual promises hereinafter set
forth and other good and valuable consideration, the receipt and sufficiency of
which is hereby acknowledged, the Company and the Stockholder hereby agree as
follows:

     1.  EXCHANGE OF SHARES.  Subject to and upon the terms and conditions of
         -------------------
this Agreement, at the Closing (as defined in Section 2), the Company shall
deliver to the Stockholder, and the Stockholder agrees to exchange all of the
Shares for, (a) _____________ shares of Common Stock (the "Company Shares"), (b)
a Note for the principal amount of U.S. $______________ (the "Stockholder Note")
and (c) U.S. $________________ in cash (the "Cash").

     2.  CLOSING.  Subject to the conditions set forth  in Section 6 and in this
         -------
Section 2, the closing of the exchange contemplated by this Agreement (the
"Closing") shall take place at the offices of Hale and Dorr LLP, 60 State
Street, Boston, Massachusetts 02109 at 8:00 a.m., Boston time, on November 20,
2001 (or such later date as is mutually agreed to in writing by the Company and
the Stockholder) (the "Closing Date").  At the Closing, (a) the Stockholder
shall deliver to the Company one or more stock certificates representing the
Shares held by the Stockholder duly endorsed in blank or with stock powers duly
executed by the Stockholder, and (b) the Company shall (i) pay the Cash to the
Stockholder by wire transfer of immediately available funds in accordance with
the Stockholder's written instructions, (ii) issue and deliver to the
Stockholder the Company Shares (which Company Shares shall be free from any
restrictive legend under the Securities Act of 1933, as amended (the "Securities
Act"), and from any stop order) through The Depository Trust Company ("DTC")
Fast Automated Securities Transfer Program by crediting such number of Company
Shares to the Stockholder's balance account with DTC through its Deposit
Withdrawal Agent Commission system in accordance with the Stockholder's written
instructions and (iii) issue and deliver to the Stockholder the Stockholder
Note, duly executed on behalf of the Company and registered in the name of the
Stockholder.

     3.  REPRESENTATIONS AND WARRANTIES OF THE STOCKHOLDER. The Stockholder
         -------------------------------------------------
represents and warrants to the Company that:

     3.01  Ownership of Shares. The Stockholder is the sole beneficial owner of
           -------------------
the Shares and, assuming that the Company delivered the Shares to the
Stockholder free and clear of all liens, security interests, pledges, voting
trusts, proxies, claims and encumbrances whatsoever, as of the Closing the
Stockholder shall have good and marketable title to the Shares, free and clear
of all liens, security interests, pledges, voting trusts, proxies, claims and
encumbrances

                                      -2-
<PAGE>

whatsoever. If the Shares are held in "street name" the Stockholder agrees to
arrange for appropriate transfer hereunder.

     3.02  Authorization; Enforcement; Noncontravention. The Stockholder has the
           --------------------------------------------
full right, power and authority to enter into and to perform this Agreement in
accordance with its terms.  This Agreement has been duly and validly authorized
by the Stockholder.  This Agreement has been duly executed and delivered on
behalf of the Stockholder, and constitutes a valid and binding agreement of the
Stockholder, enforceable against the Stockholder in accordance with its terms.
The execution, delivery and performance of this Agreement do not (i) conflict
with or breach any agreement or instrument to which the Stockholder is a party
or by which any of its assets are bound, or any organizational documents of the
Stockholder or (ii) violate any order, injunction, decree, statute, rule or
regulation applicable to the Stockholder or its assets.

     3.03  Governmental Approvals. The Stockholder is not required to obtain any
           ----------------------
consent, authorization or order of, or make any filing or registration with, any
court or governmental agency or any regulatory or self-regulatory agency, or any
third party, in order for it to execute, deliver or perform any of its
obligations under or contemplated by this Agreement.  The Stockholder is
acquiring the Company Shares solely for the purpose of investment as such is
defined by 16 C.F.R. (S)802.9; provided, however, that by making the
representation herein, the Stockholder does not agree to hold any of the Company
Shares for any minimum or other specific term and reserves the right to dispose
of the Company Shares at any time in accordance with or pursuant to a
registration statement or an exemption from registration under the Securities
Act and in accordance with Section 5.04.  Notwithstanding the foregoing or
anything else contained herein to the contrary, but subject to Section 5.04, the
Company Shares may be pledged as collateral in connection with a bona fide
margin account or other loan or financing arrangement secured by the Company
Shares and the Company Shares may be placed in "street name" or in a brokerage
account or in another custodial account.  As of the date hereof, the Stockholder
does not own, and upon its receipt of the Company Shares it will not own, more
than 9.99% of the Common Stock outstanding at such time.

     3.04  Investment Purpose. The Stockholder is acquiring the Company Shares
           ------------------
for its own account and not with a present view towards the public sale or
distribution thereof, except pursuant to sales registered or exempted from
registration under the Securities Act; provided, however, that by making the
representation herein, the Stockholder does not agree to hold any of the Company
Shares for any minimum or other specific term and reserves the right to dispose
of the Company Shares at any time in accordance with or pursuant to a
registration statement or an exemption from registration under the Securities
Act and in accordance with Section 5.04. Notwithstanding the foregoing or
anything else contained herein to the contrary, but subject to Section 5.04, the
Company Shares may be pledged as collateral in connection with a bona fide
margin account or other loan or financing arrangement secured by the Company
Shares and the Company Shares may be placed in "street name" or in a brokerage
account or in another custodial account.

                                      -3-
<PAGE>

     3.05  Accredited Investor Status. The Stockholder is an "accredited
           --------------------------
investor" as that term is defined in Rule 501(a) of Regulation D under the
Securities Act, and was not organized for the specific purpose of acquiring the
Company Shares.

     3.06  Reliance on Exemptions. The Stockholder understands that the Company
           ----------------------
Shares are being offered to it in reliance on specific exemptions from the
registration requirements of the United States federal and state securities laws
and that the Company is relying upon the truth and accuracy of, and the
Stockholder's compliance with, the representations, warranties, agreements,
acknowledgements and understandings of the Stockholder set forth herein in order
to determine the availability of such exemptions and the eligibility of the
Stockholder to acquire the Company Shares.  The Stockholder acknowledges that it
has reviewed the provisions of Rule 144 promulgated under the Securities Act (or
a successor rule thereto) ("Rule 144") and in connection with any sale of the
Company Shares other than pursuant to an effective registration statement under
the Securities Act will comply with the terms of such rule or another available
exemption from registration.

     3.07  Rule 144 Holding Period; Affiliate Status. A period of at least two
           -----------------------------------------
years has elapsed since the date on which the Shares were acquired from the
Company or from an affiliate of the Company and, if acquired by purchase, since
the date on which payment of the full purchase price was made. The Stockholder
is not, and has not at any time in the past three months been, an "affiliate" of
the Company within the meaning of paragraph (a)(1) of Rule 144.

     3.08  Information.  The Stockholder and its advisors, if any, have been
           -----------
furnished with all materials relating to the business, finances and operations
of the Company and materials relating to the issuance of the Company Shares that
have been requested by the Stockholder or its advisors. The Stockholder and its
advisors, if any, have been afforded the opportunity to ask questions of the
Company. Neither such inquiries nor any other due diligence investigations
conducted by the Stockholder or any of its advisors, if any, or representatives
shall modify, amend or affect the Stockholder's right to rely on the Company'
representations and warranties contained in Section 4 below. The Stockholder
understands that its investment in the Company Shares involves a significant
degree of risk. The Stockholder has sought such accounting, legal and tax advice
as it has considered necessary to make an informed investment decision with
respect to its acquisition of the Company Shares.

     3.09  Nature of Negotiations; Acknowledgment. The Stockholder acknowledges
           --------------------------------------
that the negotiations between the Company and the Stockholder were arm's length
in nature and the Company is not acting as a financial advisor of the
Stockholder (or in any similar capacity) with respect to this Agreement and the
transactions contemplated hereby, and any advice given by the Company or any of
its representatives or agents in connection with this Agreement and the
transactions contemplated hereby and thereby is merely incidental to the
Stockholder's purchase of the Company Shares and the Stockholder Note.  The
Stockholder further represents to the Company that the Stockholder's decision to
enter into this Agreement has been based solely on (a) the independent
evaluation by the Stockholder and its counsel and representatives, (b)
information in the Company's public dislosures, including, without limitation,
as contained in

                                      -4-
<PAGE>

the Company's filings made pursuant to the Securities Exchange Act of 1934, as
amended (the "Exchange Act"), (c) the Company's representations set forth in
Section 4 and in the Subsidiary Exchange Agreement, (d) the documents delivered
at the Closing to the Stockholder as set forth in Section 6(b) (including,
without limitation, opinions of the Company's counsel delivered pursuant to
Section 6(b)) and the documents delivered to the Stockholder at the closing
under the Subsidiary Exchange Agreement, (e) the agreement, made on September
29, 1999, between the Company and PCCW (the "Original PCCW Agreement") and the
Accession Agreement, dated November 29, 1999, by and among the Subsidiary, the
Company and PCCW (the "Accession Agreement" and, collectively with the Original
PCCW Agreement, the "PCCW Agreement") and (f) the information received from the
Company and the Subsidiary pursuant to that due diligence request delivered to
Arthur Cox on November 7, 2001.

     4.    REPRESENTATIONS AND WARRANTIES OF THE COMPANY. The Company represents
           ---------------------------------------------
and warrants to the Stockholder that:

     4.01  Organization; Authorization; No Conflicts. The Company is a
           -----------------------------------------
corporation duly organized, validly existing and in good standing under the laws
of the State of Delaware. The Company has all requisite corporate power and
authority to enter into and perform this Agreement and to issue and deliver the
Company Shares and the Stockholder Note in accordance with the terms hereof. The
execution and delivery of this Agreement and the Stockholder Note by the Company
and the consummation by the Company of the transactions contemplated hereby and
thereby (including without limitation, the issuance of the Company Shares) have
been duly authorized by the Company's Board of Directors and no further consent
or authorization of the Company, its Board of Directors or its stockholders is
required. This Agreement has been duly executed and delivered by the Company. As
of the Closing, the Stockholder Note shall be duly executed and delivered by the
Company. This Agreement constitutes a valid and binding agreement of the
Company, enforceable against the Company in accordance with its terms. As of the
Closing, the Stockholder Note shall constitute the valid and binding agreement
of the Company, enforceable against the Company in accordance with its terms.
The execution, delivery and performance of this Agreement and the Stockholder
Note by the Company does not (i) conflict with or breach any agreement or
instrument to which the Company is a party or by which any of its assets are
bound, or any organizational documents of the Company or (ii) violate any order,
injunction, decree, statute, rule or regulation applicable to the Company or its
assets. The Company has sufficient capital surplus to effect the repurchase of
the Shares under this Agreement under applicable legal requirements. The
Stockholder Note has been duly authorized and, upon issuance in accordance with
the terms of this Agreement, shall not be subject to any preemptive rights or
other similar rights of the stockholders of the Company.

     4.02  Approvals. Except as specifically contemplated by Section 5.03, the
           ---------
Company is not required to obtain any consent, authorization or order of, or
make any filing or registration with, any court or governmental agency or any
regulatory or self-regulatory agency, or any third party, in order for it to
execute, deliver or perform any of its obligations under or contemplated by this
Agreement.

                                      -5-
<PAGE>

     4.03   Issuance of the Company Shares; Rule 144. The Company Shares are
            -----------------------------------------
duly authorized and, upon issuance in accordance with the terms of this
Agreement, will be designated for quotation on the Nasdaq National Market and
will be validly issued, fully paid and non-assessable, and shall not be subject
to any preemptive rights or other similar rights of stockholders of the Company.
Assuming the accuracy as to factual matters of the representations and
warranties of the Stockholder contained in Sections 3.04 and 3.05 as of the date
hereof and as of the Closing, the issuance by the Company of the Company Shares
and the Stockholder Note to the Stockholder is exempt from registration under
the Securities Act. Upon the Stockholder's receipt of the Company Shares and the
Stockholder Note from the Company, assuming the Stockholder is not then an
"affiliate" (as defined in Rule 144(a)) of the Company, the Stockholder may
immediately resell such Company Shares and the Stockholder Note without
registration under the Securities Act in reliance on Rule 144(k) and without
registration under any state securities laws.

     4.04  No Integrated Offering. Neither the Company nor any of its
           ----------------------
affiliates, nor any person acting on its or their behalf has, directly or
indirectly, made any offers or sales of any security or solicited any offers to
buy any security under circumstances that would require registration under the
Securities Act of the issuance of the Company Shares and the Stockholder Note to
the Stockholder or (except for the issuance of shares of Common Stock and the
Notes to the Other Stockholders) cause this offering of the Company Shares and
the Stockholder Note to be integrated with prior offerings by the Company for
purposes of any applicable stockholder approval provisions, including, without
limitation, under the rules and regulations of any exchange or automated
quotation system on which any of the securities of the Company are listed or
designated, nor will the Company take any action or steps that would cause the
offering of the Company Shares and the Stockholder Note to be integrated with
other offerings (except for the issuance of shares of Common Stock and the Notes
to the Other Stockholders) or to be required to be registered under the
Securities Act.

     4.05  Solvency. The Company is not as of the date hereof, and after giving
           --------
effect to the transactions contemplated hereby, by the Subsidiary Exchange
Agreement and by exchange agreements with the Other Stockholders similar to this
Agreement and the Subsidiary Exchange Agreement (including, without limitation,
the payment of the Cash and the issuance of the Stockholder Note to the
Stockholder and the payment of cash and the issuance of Notes to the Other
Stockholders) will not be, Insolvent.  For purposes of this Section 4.05,
"Insolvent" means (a) the present fair saleable value of the Company's assets is
less than the amount required to pay the Company's total indebtedness,
contingent or otherwise; (b) the Company is unable to pay its debts and
liabilities, subordinated, contingent or otherwise, as such debts and
liabilities become absolute and matured; (c) the Company intends to incur or
believes that it will incur debts that would be beyond its ability to pay as
such debts mature; or (d) the Company has unreasonably small capital with which
to conduct the business in which it is engaged as such business is now conducted
and is proposed to be conducted.

     4.06  Fair Consideration. The Company, having been fully involved in
           ------------------
developing the transactions contemplated hereby, and having been advised by the
Company's nationally

                                      -6-
<PAGE>

recognized financial and legal advisors, is satisfied that the negotiations
between the Company and the Stockholder were conducted properly and were arm's
length in nature and in good faith, and fair consideration for the Cash, the
Stockholder Note and the Company Shares was obtained. The Company has not
entered into this Agreement with the actual intent to hinder, delay or defraud
any entity to which either it or any of its subsidiaries was or is indebted.

     4.07  Acknowledgment Regarding Stockholder's Purchase of Company Shares and
           ---------------------------------------------------------------------
Stockholder Note. The Company acknowledges and agrees that the Stockholder is
----------------
acting solely in the capacity of an arm's length purchaser with respect to this
Agreement and the transactions contemplated hereby, and that the Stockholder is
not (i) an officer or director of the Company or (ii) assuming the Stockholder
is not the "beneficial owner" of any shares of Common Stock other than the
Company Shares issuable pursuant to this Agreement, (A) a "beneficial owner" of
more than 10% of the Common Stock (as defined for purposes of Rule 13d-3 of the
Exchange Act) or (B) an "affiliate" of the Company (as defined in Rule 144(a)
promulgated under the Securities Act).  The Company further acknowledges that
the Stockholder is not acting as a financial advisor or fiduciary of the Company
(or in any similar capacity) with respect to this Agreement and the transactions
contemplated hereby, and any advice given by the Stockholder or any of its
representatives or agents in connection with this Agreement and the transactions
contemplated hereby is merely incidental to the Stockholder's purchase of the
Company Shares and the Stockholder Note. The Company further represents to the
Stockholder that the Company's decision to enter into this Agreement has been
based solely on (a) the independent evaluation by the Company and its counsel
and representatives, including, without limitation, its financial advisor, (b)
the Stockholder's and the Other Stockholder's representations set forth in
Section 3 of this Agreement and other similar exchange agreements and in the
other Transaction Documents and (c) the documents to be delivered at the Closing
to the Company as set forth in Section 6(a) and at the closing under the
Subsidiary Exchange Agreement.

     4.08  No General Solicitation; Placement Agent. Neither the Company, nor
           ----------------------------------------
any of its affiliates, nor any person acting on its or their behalf, has engaged
in any form of general solicitation or general advertising (within the meaning
of Regulation D under the Securities Act) in connection with the offer or sale
of the Company Shares and the Stockholder Note. Neither the Company, nor any of
its affiliates, nor any person acting on its or their behalf, has engaged any
placement agent or exchange agent in connection with the offer and sale of the
Company Shares and the Stockholder Note. The Company acknowledges that it has
engaged a nationally recognized financial advisor in connection with the
transactions contemplated by this Agreement and the Company is responsible for
the fees and expenses of such financial advisor in its capacity as such.

     4.09  Capitalization. As of November 15, 2001, the authorized capital stock
           --------------
of the Company consists solely of : (a) 1,400,000,000 shares of Common Stock of
which 357,402,157 shares are issued and outstanding, and (b) 5,000,000 shares of
preferred stock.

                                      -7-
<PAGE>

     4.10  Disclosure. Neither the Company nor any of its representatives has
           ----------
disclosed to the Stockholder, or provided the Stockholder with (by way of
delivery of documents or otherwise), any material, nonpublic information
regarding the Company or any of the Company's affiliates or subsidiaries or
their respective securities, which information was not publicly disclosed prior
to the date hereof.

     5.    COVENANTS.
           ---------

     5.01  Best Efforts. Each party to this Agreement shall use its best efforts
           ------------
to timely satisfy each of the conditions to be satisfied by it at or prior to
the Closing as provided in Section 6.

     5.02  Termination of Series C Agreements. Effective as of the Closing, the
           ----------------------------------
Securities Purchase Agreement, except for Section 8(I) of the Securities
Purchase Agreement (solely as it relates to third party claims), and the
Registration Rights Agreement, except for Sections 6 and 7 of the Registration
Rights Agreement, shall be terminated and shall have no further force or effect,
and the Company shall withdraw the Registration Statement on Form S-3 (File No.
333-90587) filed pursuant thereto.

     5.03  Listing. The Company shall, if required by the rules of The Nasdaq
           -------
Stock Market, Inc., promptly file with the Nasdaq National Market a Notification
Form for Listing Additional Shares with respect to the Company Shares.

     5.04  Trading Restrictions.
           --------------------

           (a)  Subject to subsections (b), (c) and (d) of this Section 5.04,
from and after the Closing, the Stockholder covenants and agrees not to sell,
transfer or dispose of any Company Shares or engage in any hedging or other
transaction which is designed to or reasonably expected to lead to or result in
a sale or disposition of the Company Shares (whether by the Stockholder or any
other party), including without limitation any short sale, sale or grant of any
right (including without limitation any put or call option) or any other
arrangement entered into in order to effect an economic transfer of the risk
related to holding the Company Shares (each a "Hedging Transaction"); provided,
however, that the restrictions set out in this Section 5.04(a) shall not apply
to the Stockholder's pledge of any of the Company Shares as collateral in
connection with a bona fide margin account or other loan or financing
arrangement secured by the Company Shares or the Stockholder placing the Company
Shares in "street name" or in a brokerage account or in another custodial
account, but only to the extent that such pledge or placing of the Company
Shares does not constitute an economic transfer of the risk related to holding
the Company Shares or result in the sale of Company Shares.

           (b)  The Company acknowledges and agrees that the Stockholder shall
be permitted to sell in any calendar quarter up to 25% of the Company Shares
which the Stockholder received on the Closing Date (subject to adjustment for
stock splits, stock dividends, stock combinations and other similar transactions
after the date of this Agreement).

                                      -8-
<PAGE>

          (c)   The Company acknowledges and agrees that the Stockholder shall
be permitted to (i) maintain and renew any short position or put equivalent
position resulting from or related to a Hedging Transaction entered into prior
to the Closing and (ii) sell, deliver or otherwise transfer that number of
Company Shares (in addition to those Company Shares that may be sold pursuant to
subsection (b) of this Section 5.04) as may be required to close out any short
position or put equivalent position resulting from a Hedging Transaction entered
into prior to June 29, 2001.

          (d)   The restrictions set out in Section 5.04(a) shall not apply on
and after the earliest of (i) the date of the occurrence of an Insolvency Event
(as defined in the Subsidiary Exchange Agreement) to the Subsidiary, (ii) the
date of the occurrence of an Event of Insolvency (as defined in the Subsidiary
Exchange Agreement ) to the Company, (iii) the first date on which the Company
or the Subsidiary fails to comply in any material respect (and such failure to
comply is not remedied within 10 days after the Company or the Subsidiary knew
of such failure) with any of its obligations under any of the Transaction
Documents (as defined below) (or any of the agreements with any Other
Stockholder substantially similar to any of the Transaction Documents), (iv) the
first date on which the Company or the Subsidiary shall have breached any of
their respective representations or warranties in any of the Transaction
Documents (or any of the agreements with any Other Stockholder substantially
similar to any of the Transaction Documents), which breach has a material
adverse effect on the business, properties, assets, operations, results of
operations or financial condition of the Company or the Subsidiary, or on the
Transaction Documents (or any of the agreements with any Other Stockholder
substantially similar to any of the Transaction Documents), or on the ability of
the Company or the Subsidiary to perform its obligations under any of the
Transaction Documents (or any of the agreements with any Other Stockholder
substantially similar to any of the Transaction Documents), (v) the first date
on which the Stockholder no longer owns any Company Shares and (vi) the date
which is one (1) year after the Closing Date.

     5.05 Standstill Agreement.
          --------------------

          (a)   Subject to Sections 5.05(b) and (c), from and after the Closing,
the Stockholder agrees that the Stockholder will not, directly or indirectly
(unless in any such cases specifically invited in writing to do so by the Board
of Directors of the Company), do any of the following (except as required
pursuant to or otherwise contemplated by this Agreement or as a result of any
stock split, stock dividend, stock repurchase or similar recapitalization by the
Company):

          (i)   acquire, offer to acquire, or agree to acquire by purchase or
     otherwise, individually or by joining a partnership, limited partnership,
     syndicate or other "group" (as such term is used in Section 13(d)(3) of the
     Exchange Act) (any such act, to "acquire"), any securities of the Company
     entitled to vote, or securities convertible into or exercisable or
     exchangeable or redeemable for such securities (collectively, "Voting

                                      -9-
<PAGE>

     Securities") if, after such acquisition, the Stockholder would beneficially
     own (as such term is defined in Rule 13d-3 of the Exchange Act) ten percent
     (10%) or more of the total combined voting power of the Voting Securities
     then outstanding;

          (ii)  form, join, participate in or encourage the formation of a
     partnership, limited partnership, syndicate or other group for the purpose
     of acquiring, holding or disposing of Voting Securities; provided, however,
     for purposes of this Section 5.05(a)(ii), the Stockholder and its
     affiliates shall not be considered to be a syndicate or other group;

          (iii) make, or in any way participate in, directly or indirectly, any
     "solicitation" of "proxies" (as such terms are defined or used in
     Regulation 14A under the 1934 Act) or become a "participant" in any
     "election contest" (as such terms are defined or used in Rule 14a-11 under
     the Exchange Act) with respect to the Company (other than by way of
     Stockholder exercising his or her right to vote his or her Voting
     Securities), or initiate, propose or otherwise solicit stockholders of the
     Company for the approval of one or more stockholder proposals with respect
     to the Company or induce or attempt to induce any other person to initiate
     any stockholder proposal;

          (iv)  deposit any Voting Securities into a voting trust or subject
     them to any voting agreement or other agreement or arrangement with respect
     to the voting of such Voting Securities;

          (v)   act, directly or indirectly, alone or in concert with others, to
     seek to control the management, Board of Directors, policies or affairs of
     the Company or any of its subsidiaries, or solicit, propose, seek to effect
     or negotiate with any other person with respect to any form of business
     combination transaction involving, directly or indirectly, the Company or
     any of its subsidiaries, or any restructuring, recapitalization or similar
     transaction with respect to the Company or any of its subsidiaries, or
     announce or disclose an intent, purpose, plan or proposal with respect to
     the Company or any of its subsidiaries or any Voting Securities
     inconsistent with the provisions of this Section 5.05, including an intent,
     purpose, plan or proposal that is conditioned on or would require the
     Company to waive the benefit of or amend any provision of this Section
     5.05, or assist, participate in, facilitate or encourage or solicit any
     effort or attempt by any person to do or seek to do any of the foregoing;
     and

          (vi)  encourage or render advice to or make any recommendation or
     proposal to any person, or directly or indirectly participate, aid and abet
     or otherwise induce any person or engage in any of the actions prohibited
     by this Section 5.05 or to engage in any actions consistent with such
     prohibitions.

          (b)   The Company and the Stockholder agree that (i) the entering into
of this Agreement, the Subsidiary Exchange Agreement and the agreements
contemplated by such agreements (collectively, the "Transaction Documents"),
(ii) the consummation of the

                                      -10-
<PAGE>

transactions contemplated by, and the enforcement of the rights provided in, the
Transaction Documents, and (iii) the entering into and consummation of the
transactions contemplated by, and enforcement of the rights provided in,
agreements similar to the Transaction Documents between the Company and each of
the Other Stockholders shall not constitute (A) the formation of a group (as
such term is used in Section 13d-3 of the Exchange Act) with respect to Common
Stock or any other securities of the Company or (B) a violation of Section
5.05(a).

           (c)  The restrictions in Section 5.05(a) shall not apply on and after
the earliest of (i) the date of the occurrence of an Insolvency Event (as
defined in the Subsidiary Exchange Agreement) to the Subsidiary, (ii) the date
of the occurrence of an Event of Insolvency (as defined in the Subsidiary
Exchange Agreement ) to the Company, (iii) the first date on which the Company
or the Subsidiary fails to comply in any material respect (and such failure to
comply is not remedied within 10 days after the Company or the Subsidiary knew
of such failure) with any of its obligations under any of the Transaction
Documents (or any of the agreements with any Other Stockholder substantially
similar to any of the Transaction Documents), (iv) the first date on which the
Company or the Subsidiary shall have breached any of their respective
representations or warranties in any of the Transaction Documents (or any of the
agreements with any Other Stockholder substantially similar to any of the
Transaction Documents), which breach has a material adverse effect on the
business, properties, assets, operations, results of operations or financial
condition of the Company or the Subsidiary, or on the Transaction Documents (or
any of the agreements with any Other Stockholder substantially similar to any of
the Transaction Documents), or on the ability of the Company or the Subsidiary
to perform its obligations under any of the Transaction Documents (or any of the
agreements with any Other Stockholder substantially similar to any of the
Transaction Documents), (v) the first date on which the Stockholder no longer
owns any Company Shares and (vi) the date which is three (3) years after the
Closing Date.

     5.06  Mutual General Release.
           ----------------------

           (a) In consideration of the release set forth in Section 5.06(b)
below, effective as of the Closing, the Stockholder, on behalf of itself and, to
the extent permitted by law, its heirs, executors, administrators, devisees,
trustees, partners, directors, officers, shareholders, employees, consultants,
representatives, predecessors, principals, agents, parents, associates,
affiliates, subsidiaries, attorneys, accountants, successors, successors-in-
interest and assignees (collectively, the "Stockholder Releasing Persons"),
hereby waives and releases, to the fullest extent permitted by law, but subject
to Section 5.06(c) below, any and all claims, rights and causes of action,
whether known or unknown (collectively, the "Stockholder Claims"), that any of
the Stockholder Releasing Persons had, currently has or as of the Closing may
have against (i) the Company, (ii) any of the Company's current or former
parents, shareholders, affiliates, subsidiaries, predecessors or assigns, or
(iii) any of the Company's or such other persons' or entities' current or former
officers, directors, partners, employees, agents, principals, investors,
signatories, advisors, consultants, spouses, heirs, estates, executors,
attorneys, auditors and associates and members of their immediate families
(collectively, the "Company Released

                                      -11-
<PAGE>

Persons"), including, without limitation, Stockholder Claims arising out of or
relating to the Securities Purchase Agreement, the Series C Certificate of
Designations and the Registration Rights Agreement (collectively, the "Released
Documents"). Notwithstanding the foregoing, nothing herein is intended to
release any Stockholder Claims arising after the Closing.

          (b)  In consideration of the release set forth in Section 5.06(a) and
in further consideration of the Stockholder entering into this Agreement,
effective as of the Closing, the Company on behalf of itself and, to the extent
permitted by law, its heirs, executors, administrators, devisees, trustees,
partners, directors, officers, shareholders, employees, consultants,
representatives, predecessors, principals, agents, parents, associates,
affiliates, subsidiaries, attorneys, accountants, successors, successors-in-
interest and assignees (collectively, the "Company Releasing Persons"), hereby
waives and releases, to the fullest extent permitted by law, but subject to
Section 5.06(c) below, any and all claims, rights and causes of action, whether
known or unknown (collectively, the "Company Claims"), that any of the Company
Releasing Persons had, currently has or as of the Closing may have against (i)
the Stockholder, (ii) any of the Stockholder's current or former parents,
shareholders, affiliates, subsidiaries, predecessors or assigns, or (iii) any of
the Stockholder's or such other persons' or entities' current or former
officers, directors, partners, employees, agents, principals, investors,
signatories, advisors, consultants, spouses, heirs, estates, executors,
attorneys, auditors and associates and members of their immediate families
(collectively, the "Stockholder Released Persons"), including, without
limitation, any Company Claims arising out of or relating to the Released
Documents. Notwithstanding the foregoing, nothing herein is intended to release
any Company Claims arising after the Closing.

          (c)  The Company and the Stockholder acknowledge that the releases set
forth in Sections 5.06(a) and (b) above do not affect any claim which any
Company Releasing Person or Stockholder Releasing Person had, currently has or
in the future may have under this Agreement, the Stockholder Note, the
Subsidiary Exchange Agreement, the Pledge Agreement, the Collateral Agent
Agreement, Section 8(I) of the Securities Purchase Agreement (solely as it
relates to third party claims) or Sections 6 and 7 of the Registration Rights
Agreement.

     5.07 Rule 144.  The Company shall not, directly or indirectly, dispute or
          --------
otherwise interfere with any claim by the Stockholder that the Stockholder's
holding period (as contemplated by Rule 144(d)) of any Company Share relates
back (i.e., tacks) to the holding period for the Shares.

     6.   CLOSING CONDITIONS.
          ------------------

          (a)  Conditions to the Company's Obligation to Close. The obligation
               -----------------------------------------------
of the Company hereunder to issue and sell the Company Shares and the
Stockholder Note to the Stockholder and for the Company to redeem certain of the
Shares for the Cash at the Closing is subject to the satisfaction, at or before
the Closing, of each of the following conditions, provided that these conditions
are for the Company's sole benefit and may be waived by the Company in its sole
discretion by providing the Stockholder with prior written notice thereof:

                                      -12-
<PAGE>

                 (i)     The Stockholder shall have executed this Agreement and
          delivered the same to the Company.

                 (ii)    The Stockholder shall have delivered to the Company
          stock certificates representing the Shares held by the Stockholder
          duly endorsed in blank.

                 (iii)   The representations and warranties of the Stockholder
          shall be true and correct in all material respects as of the date when
          made and as of the Closing Date as though made at that time (except
          for representations and warranties that speak as of a specific date
          and in such case shall be true and correct in all material respects as
          of that particular date), and the Stockholder shall have performed,
          satisfied and complied in all material respects with the covenants,
          agreements and conditions required by this Agreement to be performed,
          satisfied or complied with by the Stockholder at or prior to the
          Closing. The Company shall have received a certificate executed by an
          authorized signatory of the Stockholder, dated as of the Closing Date,
          to the foregoing effect. No order, injunction or decree of any court
          or governmental authority of competent jurisdiction or any self-
          regulatory organization having authority over the matters contemplated
          hereby would be violated as a result of the Closing.

                 (iv)    The closing of the transactions contemplated by the
          Subsidiary Exchange Agreement shall be consummated concurrent with the
          Closing.

                 (v)     The Other Stockholders shall have entered into exchange
          agreements with the Company substantially similar to this Agreement
          and exchange agreements with the Company and the Subsidiary
          substantially similar to the Subsidiary Exchange Agreement, so that
          when taken together with this Agreement and the Subsidiary Exchange
          Agreement, all of the shares of Series C Preferred Stock and Notes
          outstanding shall be subject to such agreements, and the closing of
          the transactions contemplated by each such agreement shall be
          consummated concurrent with the Closing.

          (b)  Conditions to the Stockholder's Obligation to Close. The
               ---------------------------------------------------
obligation of the Stockholder hereunder to exchange certain of the Shares for
the Company Shares and the Stockholder Note and to permit the Company to redeem
certain of the Shares for the Cash at the Closing is subject to the
satisfaction, at or before the Closing, of each of the following conditions,
provided that these conditions are for the Stockholder's sole benefit and may be
waived by the Stockholder at any time in its sole discretion by providing the
Company with prior written notice thereof:

                                      -13-
<PAGE>

     (i)    The Company shall have executed this Agreement and delivered the
same to the Stockholder.

     (ii)   The Company shall have caused the Company Shares to be delivered to
the Stockholder through DTC Fast Automated Securities Transfer Program by
crediting such number of Company Shares to the Stockholder's balance account
with DTC through its Deposit Withdrawal Agent Commission system in accordance
with the Stockholder's written instructions.

     (iii)   The Company shall have delivered the Cash to the Stockholder by
wire transfer of immediately available funds in accordance with the
Stockholder's written instructions.

     (iv)    The Company shall have executed and delivered to the Stockholder
the Stockholder Note registered in the name of the Stockholder.

     (v)     The Stockholder shall have received the opinion of Hale and Dorr
LLP, dated as of the Closing Date, in form, scope and substance reasonably
satisfactory to the Stockholder and in substantially the form attached hereto as
Exhibit B.
---------

     (vi)    The Company shall have delivered to the Stockholder a certificate,
executed by the Secretary of the Company dated as of the Closing Date, as to (i)
the resolutions described in Section 4.01 as adopted by the Company's Board of
Directors in a form reasonably acceptable to the Stockholder, (ii) the Company's
Certificate of Incorporation and (iii) the Company's Bylaws, each as in effect
at the Closing.

     (vii)   The representations and warranties of the Company shall be true and
correct in all material respects as of the date when made and as of the Closing
Date as though made at that time (except for representations and warranties that
speak as of a specific date and in such case shall be true and correct in all
material respects as of that particular date) and the Company shall have
performed, satisfied and complied in all material respects with the covenants,
agreements and conditions required by this Agreement to be performed, satisfied
or complied with by the Company at or prior to the Closing. The Stockholder
shall have received a certificate, executed on behalf of the Company by the
Chief Financial Officer or President and Chief Operating Officer of the Company,
dated as of the Closing Date, to the foregoing effect. No order, injunction or
decree of any court or governmental authority of competent jurisdiction or any
self-regulatory organization having authority over the matters contemplated
hereby would be violated as a result of the Closing.

                                      -14-
<PAGE>

               (viii)    The Common Stock shall be designated for quotation on
          the Nasdaq National Market.

               (ix)      The closing of the transactions contemplated by the
          Subsidiary Exchange Agreement shall be consummated concurrent with the
          Closing.

               (x)       The Other Stockholders shall have entered into exchange
          agreements with the Company substantially similar to this Agreement
          and exchange agreements with the Company and the Subsidiary
          substantially similar to the Subsidiary Exchange Agreement, so that
          when taken together with this Agreement and the Subsidiary Exchange
          Agreement, all of the shares of Series C Preferred Stock and Notes
          outstanding shall be subject to such agreements, and the closing of
          the transactions contemplated by each such agreement shall be
          consummated concurrent with the Closing.

     7.   TERMINATION. In the event that the Closing shall not have occurred on
          -----------
or before November 20, 2001 due to the Company's failure to satisfy the
conditions set forth in Section 6(b) above (including, without limitation, the
failure of the conditions set forth in clauses (ix) and (x) of Section 6(b) due
to the Company's failure to satisfy the conditions to closing set forth in the
Subsidiary Exchange Agreement or similar exchange agreements with the Other
Stockholders or exchange agreements with the Other Stockholders similar to this
Agreement ) (and the Stockholder does not waive such unsatisfied condition(s)),
the Stockholder shall have the option to terminate this Agreement with respect
to the Company at the close of business on such date without liability of any
party to any other party. In the event that the Closing shall not have occurred
on or before November 20, 2001 due to the Stockholder's failure to satisfy the
conditions set forth in Section 6(a) above (including, without limitation, the
failure of the condition set forth in clause (iv) of Section 6(a) due to the
Stockholder's failure to satisfy the conditions to closing set forth in the
Subsidiary Exchange Agreement) (and the Company does not waive such unsatisfied
condition(s)), the Company shall have the option to terminate this Agreement
with respect to the Stockholder at the close of business on such date without
liability of any party to any other party.

     8.   MISCELLANEOUS.
          -------------

          (a)  Governing Law. This Agreement shall be governed by and
               -------------
interpreted in accordance with the laws of the State of Delaware without regard
to the principles of conflicts of laws. The parties hereto hereby submit to the
exclusive jurisdiction of the United States Federal Courts and the state courts
located in Delaware with respect to any dispute arising under this Agreement or
the transactions contemplated hereby and irrevocably agree that all claims in
respect of such suit or proceeding may be determined in such courts. The Company
and the Stockholder irrevocably waive any defense of an inconvenient forum to
the maintenance of such suit or proceeding. The Company and the Stockholder
further agree that service of process upon a party mailed by first class mail
shall be deemed in every respect effective service of process

                                      -15-
<PAGE>

upon the party in any such suit or proceeding. Nothing herein shall affect any
party's right to serve process in any other manner permitted by law. The Company
and the Stockholder agree that a final non-appealable judgment in any such suit
or proceeding shall be conclusive and may be enforced in other jurisdictions by
suit on such judgment or in any other lawful manner.

          (b)  Counterparts; Signature By Facsimile. This Agreement may be
               ------------------------------------
executed in one or more counterparts, all of which shall be considered one and
the same agreement and shall become effective when counterparts have been signed
by each party and delivered to the other party. This Agreement, once executed by
a party, may be delivered to the other party hereto by facsimile transmission of
a copy of this Agreement bearing the signature of the party so delivering this
Agreement.

          (c)  Headings. The headings of this Agreement are for convenience of
               --------
reference only and shall not form a part of, or affect the interpretation of,
this Agreement.

          (d)  Severability. If any provision of this Agreement shall be invalid
               ------------
or unenforceable in any jurisdiction, such invalidity or unenforceability shall
not affect the validity or enforceability of the remainder of this Agreement or
the validity or enforceability of this Agreement in any other jurisdiction.

          (e)  Entire Agreement; Amendments.  This Agreement and the Stockholder
               ----------------------------
Note contain the entire understanding of the parties with respect to the matters
covered herein and therein, and except as specifically set forth herein and
therein, neither the Company nor the Stockholder makes any representation,
warranty, covenant or undertaking with respect to such matters. No provision of
this Agreement may be waived other than by an instrument in writing signed by
the party to be charged with enforcement and no provision of this Agreement may
be amended other than by an instrument in writing signed by the Company and the
Stockholder.

          (f)  Notices. Any notices or other communications required or
               -------
permitted to be given under the terms of this Agreement shall be sent overnight
by express mail or delivered personally by courier (including an overnight
delivery service) or by facsimile and shall be effective upon receipt, if
delivered by overnight express mail, personally or by courier (including an
overnight delivery service) or by facsimile, in each case addressed to a party.
The address for such notices and other communications shall be:

          If to the Company:     CMGI, Inc.
                                 100 Brickstone Square
                                 Andover, MA 01810
                                 Attn: General Counsel
                                 Facsimile: (978) 684-3601

          With a copy to:        Hale and Dorr LLP
                                 60 State Street

                                      -16-
<PAGE>

                                        Boston, MA 02109
                                        Attn:  Mark G. Borden, Esq.
                                        Facsimile: (617) 526-5000

          If to the Stockholder:

          With a copy to:

Each party shall provide written notice to the other party of any change in
address.

          (g)  Successors and Assigns. This Agreement shall be binding upon and
               ----------------------
inure to the benefit of the parties and their successors and assigns. Neither
the Company nor the Stockholder shall assign this Agreement or any rights or
obligations hereunder without the prior written consent of the other; provided,
that, the Stockholder may assign its rights and obligations hereunder to any
Other Stockholder, to any person that purchases Company Shares in a private
transaction from a Stockholder or to any of its "affiliates," as that term is
defined under the Exchange Act, without the consent of the Company; provided,
further, however, that the transferee has agreed in writing to be bound by the
provisions of this Agreement with such transferee becoming a "Stockholder" under
this Agreement with all of the rights and obligations a Stockholder has
hereunder and the Company and the Subsidiary shall have been notified of the
name and address of the transferee.

          (h)  Third Party Beneficiaries.  This Agreement is intended for the
               -------------------------
benefit of the parties hereto and their respective permitted successors and
assigns, and is not for the benefit of, nor may any provision hereof be enforced
by, any other person.

          (i)  Indemnification.  The Company agrees to indemnify and hold
               ---------------
harmless the Stockholder and its officers, directors, partners, employees and
agents (each, an "Indemnified Person") from and against any losses, claims,
damages, liabilities, judgments, fines, penalties, charges, costs, reasonable
attorneys' fees and expenses, amounts paid in settlement or expenses, joint or
several, (collectively, "Claims") arising as a result of or related to any
breach or alleged breach by the Company of any of its representations,
warranties, obligations and covenants set forth in this Agreement or in
connection with the enforcement by the Stockholder of any of the Company's
obligations hereunder, including the enforcement of this indemnity. The
indemnities set forth in this Section 8(i) shall remain in full force and effect
regardless of any investigation made by or on behalf of the Indemnified Person
and shall survive the Closing and the transfer of the Company Shares and the
Stockholder Note by the Stockholder. Promptly after receipt by an Indemnified
Person under this Section 8(i) of the commencement of any action or proceeding
(including any governmental action or proceeding)

                                      -17-
<PAGE>

involving a Claim, such Indemnified Person shall, if a Claim in respect thereof
is to be made against any indemnifying party under this Section 8(i), deliver to
the Company a written notice of the commencement thereof, and the indemnifying
party shall have the right to participate in, and, to the extent the
indemnifying party so desires, jointly with any other indemnifying party
similarly noticed, to assume control of the defense thereof with counsel
mutually and reasonably satisfactory to the indemnifying party and the
Indemnified Person; provided, however, that an Indemnified Person shall have the
right to retain its own counsel with the fees and expenses to be paid by the
indemnifying party. Notwithstanding the foregoing, the Company shall be
responsible for paying reasonable fees for only one separate legal counsel in
the United States and one separate counsel in the jurisdiction in which the
Claim is being made or brought for the Stockholder and the Other Stockholders in
the aggregate. The Company shall keep the Indemnified Person fully apprised at
all times as to the status of the defense or any settlement negotiations with
respect thereto. The Company shall not be liable for any settlement of any
action, claim or proceeding effected without its prior written consent;
provided, however, that the indemnifying party shall not unreasonably withhold,
delay or condition its consent. The Company shall not, without the prior written
consent of the Indemnified Person, consent to entry of any judgment or enter
into any settlement or other compromise which does not include as an
unconditional term thereof the giving by the claimant or plaintiff to such
Indemnified Person of a release from all liability in respect to such Claim or
litigation. The failure to deliver written notice to the Company within a
reasonable time of the commencement of any such action shall not relieve the
Company of any liability to the Indemnified Person under this Section 8(i),
except to the extent that the Company is prejudiced in its ability to defend
such action. The indemnity agreements contained in this Section 8(i) shall be in
addition to (i) any cause of action or similar right of the Indemnified Person
against the indemnifying party or others, and (ii) any liabilities the
indemnifying party may be subject to pursuant to the law.

          (j)  Disclosure of Transaction; Publicity; Other Material Information.
               ----------------------------------------------------------------
Except as specifically permitted or required by this Section 8(j) or otherwise
required by law and except for disclosures made to a court or other governmental
agency or regulatory authority in order to enforce a party's rights under the
Transaction Documents, the Company and the Stockholder agree not to disclose
information about the proposals, negotiations and discussions leading up to the
execution of this Agreement and the consummation of the transactions at the
Closing. On or before the first business day following the date of this
Agreement, the Company shall file a Form 8-K with the Securities and Exchange
Commission (the "SEC") describing the terms of the transactions contemplated by
this Agreement in the form required by the Exchange Act, and attaching this
Agreement as an exhibit to such filing (including all attachments, the "8-K
Filing"). On or before the first business day after the Closing Date, the
Company shall publicly disclose the occurrence of the transactions at the
Closing. From and after the filing of the 8-K Filing with the SEC, the
Stockholder shall not be in possession of any material nonpublic information
received from the Company, any of its subsidiaries or any of its respective
officers, directors, employees or agents, that is not disclosed in the 8-K
Filing. The Company shall not, and shall cause each of its subsidiaries and its
and each of their respective officers, directors, employees and agents not to,
provide the Stockholder with any material nonpublic information

                                      -18-
<PAGE>

regarding the Company or any of its subsidiaries from and after the filing of
the 8-K Filing with the SEC without the express written consent of the
Stockholder. In the event of a breach of the foregoing covenant or Section 4.10
by the Company, any of its subsidiaries, or any of its or their respective
officers, directors, employees and agents, in addition to any other remedy
provided herein, the Stockholder shall have the right to make a public
disclosure, in the form of a press release, public advertisement or otherwise,
of such material nonpublic information without the prior approval by the
Company, its subsidiaries, or any of its or their respective officers,
directors, employees or agents; provided that the Company does not publicly
disclose such information within 24 hours of the Stockholder (i) notifying the
Company of the breach of the immediately preceding sentence and (ii) first
providing the Company with the Stockholder's proposed form of disclosure. The
Stockholder agrees to make any reasonable changes (determined in the
Stockholder's sole discretion) to such disclosure requested by the Company
within 24 hours of the Stockholder first providing the Company with the
Stockholder's proposed form of disclosure. The Stockholder shall not have any
liability to the Company, its subsidiaries, or any of its or their respective
officers, directors, employees, shareholders or agents for any such disclosure.
Subject to the foregoing, neither the Company nor the Stockholder shall issue
any press releases or any other public statements with respect to the
transactions contemplated hereby; provided, however, that the Company shall be
entitled, without the prior approval of the Stockholder, to make any press
release or other public disclosure with respect to such transactions (i) in
substantial conformity with the 8-K Filing and contemporaneously therewith and
(ii) as is required by applicable law and regulations (provided that in the case
of clause (i) the Stockholder shall be consulted by the Company in connection
with any such press release or other public disclosure prior to its release).

               (k)  Further Assurances. Each party shall do and perform, or
                    ------------------
cause to be done and performed, all such further acts and things, and shall
execute and deliver all such other agreements, certificates, instruments and
documents, as the other party may reasonably request in order to carry out the
intent and accomplish the purposes of this Agreement and the consummation of the
transactions contemplated hereby.

               (l)  No Strict Construction.  The language used in this
                    ----------------------
Agreement shall be deemed to be the language chosen by the parties to express
their mutual intent, and no rules of strict construction will be applied against
any party.

               (m)  Expenses. Except as provided in Section 8(i), each of the
                    --------
parties shall pay its own costs and expenses in connection with the transactions
contemplated hereby.

               (n)  Survival. The representations and warranties of the Company
                    --------
and the Stockholder contained in Sections 3 and 4 hereof shall survive the
Closing and shall expire on the second anniversary of the Closing Date. The
covenants and agreements contained in Sections 5 and 8 hereof, shall survive the
Closing without limitation, except as otherwise specifically provided in
Sections 5.04(d) or 5.05(c).

                                      -19-
<PAGE>

               (o)  Remedies. The parties hereto shall have all rights and
                    --------
remedies set forth in this Agreement and the Stockholder Note and all of the
rights which the parties have under law. The parties hereto acknowledge and
agree that money damages would be both incalculable and an insufficient remedy
for any breach of this Agreement by any party hereto and, accordingly, any
person having any rights under any provision of this Agreement, in addition to
any other rights or remedies hereunder, shall be entitled to enforce such rights
specifically (without posting a bond or other security), to recover damages by
reason of any breach of any provision of this Agreement and to exercise all
other rights granted by law.

               (p)  Payment Set Aside. To the extent that the Company makes a
                    -----------------
payment or payments to the Stockholder hereunder or under the Stockholder Note
or the Stockholder enforces or exercises its rights hereunder or under the
Stockholder Note and such payment or payments or the proceeds of such
enforcement or exercise or any part thereof are subsequently invalidated,
declared to be fraudulent or preferential, set aside, recovered from, disgorged
by or are required to be refunded, repaid or otherwise restored to the Company
by a trustee, receiver, examiner or any other person under any law (including,
without limitation, any bankruptcy or insolvency law, common law or equitable
cause of action of any jurisdiction), then to the extent of any such restoration
the obligation or part thereof originally intended to be satisfied shall be
revived and continued in full force and effect as if such payment had not been
made or such enforcement or setoff had not occurred

                     [The Next Page is the Signature Page]

                                      -20-
<PAGE>

     IN WITNESS WHEREOF, this Agreement has been duly executed by the parties
hereto as of and on the date first above written.

                                             COMPANY:

                                             CMGI, INC.

                                             By: _______________________________

                                             Title: ____________________________

                                             STOCKHOLDER:

                                             By: _______________________________
                                             Name:
                                             Title:

                                             No. of Shares: ______________

                                     -21-
<PAGE>

                                  Schedule A
                                  ----------

     This schedule is provided pursuant to Instruction 2 of Item 601 of
Regulation S-K promulgated under the Securities Exchange Act of 1934 to provide
certain specific information with respect to the filing of a form of agreement.

                                           Shares of Series C Convertible
Party                                           Preferred Stock Sold
-----                                           --------------------

Wingate Capital Ltd.                                  65,488

Fisher Capital Ltd.                                  103,180

Manchester Securities Corp.                           41,430

Elliott International, L.P.                           41,430

Leonardo, L.P.                                        54,586

RCG Halifax Fund, Ltd.                                 2,963

W.S. Investments, L.P.                                 4,938

Surfside Investment Company                              988

Halifax Fund L.P.                                      9,997

RGC International Investors, LDC                      50,000

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