Document:

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                                                                   EXHIBIT 10.28

                      AMENDMENT TO LINE OF CREDIT AGREEMENT

      THIS AMENDMENT (the "amendment") is made and entered into effective as of
October 16, 2000, by and between the GMF Holdings (the "Investor") and Celerity
Systems, a Delaware Corporation (the "Company").

                                   WITNESSTH:

      WHEREAS, GMF Holdings and the Company entered into a Line of Credit
Agreement, dated September 30, 1999 (the "Agreement"); and

      WHEREAS, the parties desire that, upon the terms and subject to the
conditions contained in the Agreement, the Company shall issue and sell to the
Investor, from time to time, and the Investor shall purchase up to Ten Million
($10,000,000) Dollars of Debentures for a total purchase price of Ten Million
($10,000,000) Dollars; and

      WHEREAS, the parties desire to amend the terms of Agreement as set forth
herein.

      NOW, THEREFORE, in consideration of the promises and the mutual promises,
conditions and covenants herein contained and in the Agreement, and other good
and valuable consideration, receipt of which is hereby acknowledged, the parties
hereto agree as follows:

      1.    The Agreement is hereby amended by deleting Article XI Section 11.2
in its entirety and inserting in lieu thereof the following:

            11.2   TERMINATION. The obligations of the Investor to make an
Advance under Article II hereof shall terminate on October 31, 2001.

      2.    Except as set forth hereinabove, all other terms and provisions of
the Agreement shall remain in full force and effect.

      IN WITNESS WHEREOF the parties have hereunto set their hands and seals the
day and year set above set forth.

                                          CELERITY SYSTEMS, INC.
                                          "THE COMPANY"

                                          /s/ KENNETH D. VAN METER
                                          ---------------------------
                                          By: Kenneth D. Van Meter
                                          Its: President and CEO

                                          GMF HOLDINGS
                                          "THE INVESTOR"

                                          /s/ DIEGO DAVIS
                                          ----------------------------
                                          By: Diego DavisEXHIBIT 4.1

                              PUMA TECHNOLOGY, INC.

                       2000 SUPPLEMENTAL STOCK OPTION PLAN

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                       2000 SUPPLEMENTAL STOCK OPTION PLAN
                      (AS AMENDED THROUGH AUGUST 22, 2000)

     1.   ESTABLISHMENT, PURPOSE AND TERM OF PLAN.

          1.1  ESTABLISHMENT. The Puma Technology, Inc. 2000 Supplemental Stock
Option Plan was initially established as of March 29, 2000 (the "PLAN").

          1.2  PURPOSE. The purpose of the Plan is to advance the interests of
the Participating Company Group and its stockholders by providing an incentive
to attract, retain and reward persons performing services for the Participating
Company Group and by motivating such persons to contribute to the growth and
profitability of the Participating Company Group.

          1.3  TERM OF PLAN. The Plan shall continue in effect until the earlier
of its termination by the Board or the date on which all of the shares of Stock
available for issuance under the Plan have been issued and all restrictions on
such shares under the terms of the Plan and the agreements evidencing Options
granted under the Plan have lapsed.

     2.   DEFINITIONS AND CONSTRUCTION.

          2.1  DEFINITIONS. Whenever used herein, the following terms shall have
their respective meanings set forth below:

               (a)  "BOARD" means the Board of Directors of the Company. If one
or more Committees have been appointed by the Board to administer the Plan,
"Board" also means such Committee(s).

               (b)  "CODE" means the Internal Revenue Code of 1986, as amended,
and any applicable regulations promulgated thereunder.

               (c)  "COMMITTEE" means the Compensation Committee or other
committee of the Board duly appointed to administer the Plan and having such
powers as shall be specified by the Board. Unless the powers of the Committee
have been specifically limited, the Committee shall have all of the powers of
the Board granted herein, including, without limitation, the power to amend or
terminate the Plan at any time, subject to the terms of the Plan and any
applicable limitations imposed by law.

               (d)  "COMPANY" means Puma Technology, Inc., a Delaware
corporation, or any successor corporation thereto.

               (e)  "CONSULTANT" means any person, including an advisor, engaged
by a Participating Company to render services other than as an Employee or a
Director.

               (f)  "DIRECTOR" means a member of the Board or of the board of
directors of any other Participating Company.

               (g)  "EMPLOYEE" means any person treated as an employee
(including

<PAGE>

an officer or a Director who is also treated as an employee) in the
records of a Participating Company; provided, however, that neither service as a
Director nor payment of a director's fee shall be sufficient to constitute
employment for purposes of the Plan.

               (h)  "OFFICER" means a person who is an officer of the Company
within the meaning of Section 16 of the Exchange Act and the rules and
regulations promulgated thereunder.

               (i)  "FAIR MARKET VALUE" means, as of any date, the value of a
share of stock or other property as determined by the Board, in its sole
discretion, or by the Company, in its sole discretion, if such determination is
expressly allocated to the Company herein.

               (j)  "INCENTIVE STOCK OPTION" means an Option intended to be and
which qualifies as an incentive stock option within the meaning of Section
422(b) of the Code.

               (k)  "NONSTATUTORY STOCK OPTION" means an Option not intended to
be (as set forth in the Option Agreement) or which does not qualify as an
Incentive Stock Option.

               (l)  "OPTION" means a right to purchase Stock (subject to
adjustment as provided in Section 4.2) pursuant to the terms and conditions of
the Plan. An Option may be a Nonstatutory Stock Option only.

               (m)  "OPTION AGREEMENT" means a written agreement between the
Company and an Optionee setting forth the terms, conditions and restrictions of
the Option granted to the Optionee and any shares acquired upon the exercise
thereof.

               (n)  "OPTIONEE" means a person who has been granted one or more
Options.

               (o)  "PARENT CORPORATION" means any present or future "parent
corporation" of the Company, as defined in Section 424(e) of the Code.

               (p)  "PARTICIPATING COMPANY" means the Company or any Parent
Corporation or Subsidiary Corporation.

               (q)  "PARTICIPATING COMPANY GROUP" means, at any point in time,
all corporations collectively which are then Participating Companies.

               (r)  "SECTION 162(m)" means Section 162(m) of the Code, as
amended by the Revenue Reconciliation Act of 1993 (P.L. 103-66).

               (s)  "STOCK" means the common stock of the Company, as adjusted
from time to time in accordance with Section 4.2.

               (t)  "SUBSIDIARY CORPORATION" means any present or future
"subsidiary corporation" of the Company, as defined in Section 424(f) of the
Code.

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               (u)  "TEN PERCENT OWNER OPTIONEE" means an Optionee who, at the
time an Option is granted to the Optionee, owns stock possessing more than ten
percent (10%) of the total combined voting power of all classes of stock of a
Participating Company within the meaning of Section 422(b)(6) of the Code.

          2.2  CONSTRUCTION. Captions and titles contained herein are for
convenience only and shall not affect the meaning or interpretation of any
provision of the Plan. Except when otherwise indicated by the context, the
singular shall include the plural, the plural shall include the singular, and
the term "or" shall include the conjunctive as well as the disjunctive.

     3.   ADMINISTRATION.

          3.1  ADMINISTRATION BY THE BOARD. The Plan shall be administered by
the Board, including any duly appointed Committee of the Board. All questions of
interpretation of the Plan or of any Option shall be determined by the Board,
and such determinations shall be final and binding upon all persons having an
interest in the Plan or such Option. Any officer of a Participating Company
shall have the authority to act on behalf of the Company with respect to any
matter, right, obligation, determination or election which is the responsibility
of or which is allocated to the Company herein, provided the officer has
apparent authority with respect to such matter, right, obligation, determination
or election.

          3.2  POWERS OF THE BOARD. In addition to any other powers set forth in
the Plan and subject to the provisions of the Plan, the Board shall have the
full and final power and authority, in its sole discretion:

               (a)  to determine the persons to whom, and the time or times at
which, Options shall be granted and the number of shares of Stock to be subject
to each Option;

               (b)  to designate Options as Nonstatutory Stock Options;

               (c)  to determine the Fair Market Value of shares of Stock or
other property;

               (d)  to determine the terms, conditions and restrictions
applicable to each Option (which need not be identical) and any shares acquired
upon the exercise thereof, including, without limitation, (i) the exercise price
of the Option, (ii) the method of payment for shares purchased upon the exercise
of the Option, (iii) the method for satisfaction of any tax withholding
obligation arising in connection with the Option or such shares, including by
the withholding or delivery of shares of stock, (iv) the timing, terms and
conditions of the exercisability of the Option or the vesting of any shares
acquired upon the exercise thereof, (v) the time of the expiration of the
Option, (vi) the effect of the Optionee's termination of employment or service
with the Participating Company Group on any of the foregoing, and (vii) all
other terms, conditions and restrictions applicable to the Option or such shares
not inconsistent with the terms of the Plan;

               (e)  to approve one or more forms of Option Agreement;

<PAGE>

               (f)  to amend, modify, extend, or renew, or grant a new Option in
substitution for, any Option or to waive any restrictions or conditions
applicable to any Option or any shares acquired upon the exercise thereof;

               (g)  to accelerate, continue, extend or defer the exercisability
of any Option or the vesting of any shares acquired upon the exercise thereof,
including with respect to the period following an Optionee's termination of
employment or service with the Participating Company Group;

               (h)  to delegate to any proper officer of the Company the
authority to grant one or more Options, without further approval of the Board,
to any person eligible pursuant to Section 5, other than a person who, at the
time of such grant, is an Insider or is at or above the Vice-President level;
provided, however, that (i) such Options shall not be granted to any one person
within any twelve (12) month period for more than fifty thousand (50,000) shares
in the aggregate, (ii) the exercise price per share of each such Option shall be
equal to 100% of the closing price per share of the Stock on the effective date
of grant (or, if no price is reported for such date, on the last day preceding
the date of grant on which such price is reported) as quoted on the National
Association of Securities Dealers Automated Quotation System (or the average of
the closing bid and asked prices if the shares of Stock are so quoted instead),
or as reported on such other stock exchange or market system which constitutes
the primary market for the Stock, and (iii) each such Option shall be subject to
the terms and conditions of the appropriate standard form of Option Agreement
approved by the Board and shall conform to the provisions of the Plan and such
other guidelines as shall be established from time to time by the Board, as well
as the Company's guidelines for stock option grants authorized for new hires;

               (i)  to prescribe, amend or rescind rules, guidelines and
policies relating to the Plan, or to adopt supplements to, or alternative
versions of, the Plan, including, without limitation, as the Board deems
necessary or desirable to comply with the laws of, or to accommodate the tax
policy or custom of, foreign jurisdictions whose citizens may be granted
Options; and

               (j)  to correct any defect, supply any omission or reconcile any
inconsistency in the Plan or any Option Agreement and to make all other
determinations and take such other actions with respect to the Plan or any
Option as the Board may deem advisable to the extent consistent with the Plan
and applicable law.

          3.3  COMMITTEE COMPLYING WITH SECTION 162(m). If a Participating
Company is a "publicly held corporation" within the meaning of Section 162(m),
the Board may establish a Committee of "outside directors" within the meaning of
Section 162(m) to approve the grant of any Option which might reasonably be
anticipated to result in the payment of employee remuneration that would
otherwise exceed the limit on employee remuneration deductible for income tax
purposes pursuant to Section 162(m).

     4.   SHARES SUBJECT TO PLAN.

          4.1  MAXIMUM NUMBER OF SHARES ISSUABLE. Subject to adjustment as
provided in Section 4.2, the maximum aggregate number of shares of Stock that
may be issued

<PAGE>

under the Plan shall be three million hundred (3,000,000) and shall consist of
authorized but unissued or reacquired shares of Stock or any combination
thereof. If any outstanding Option for any reason expires or is terminated or
canceled or shares of Stock acquired, subject to repurchase, upon the exercise
of an Option are repurchased by the Company, the shares of Stock allocable to
the unexercised portion of such Option, or such repurchased shares of Stock,
shall again be available for issuance under the Plan.

          4.2  ADJUSTMENTS FOR CHANGES IN CAPITAL STRUCTURE. In the event of any
stock dividend, stock split, reverse stock split, recapitalization, combination,
reclassification or similar change in the capital structure of the Company,
appropriate adjustments shall be made in the number and class of shares subject
to the Plan and to any outstanding Options and in the exercise price per share
of any outstanding Options. If a majority of the shares which are of the same
class as the shares that are subject to outstanding Options are exchanged for,
converted into, or otherwise become (whether or not pursuant to an Ownership
Change Event, as defined in Section 8.1) shares of another corporation (the "NEW
SHARES"), the Board may unilaterally amend the outstanding Options to provide
that such Options are exercisable for New Shares. In the event of any such
amendment, the number of shares subject to, and the exercise price per share of,
the outstanding Options shall be adjusted in a fair and equitable manner as
determined by the Board, in its sole discretion. Notwithstanding the foregoing,
any fractional share resulting from an adjustment pursuant to this Section 4.2
shall be rounded up or down to the nearest whole number, as determined by the
Board, and in no event may the exercise price of any Option be decreased to an
amount less than the par value, if any, of the stock subject to the Option. The
adjustments determined by the Board pursuant to this Section 4.2 shall be final,
binding and conclusive.

     5.   ELIGIBILITY AND OPTION LIMITATIONS.

          5.1  PERSONS ELIGIBLE FOR OPTIONS. Options may be granted only to
Employees or Consultants who are not Officers or Directors of the Company. For
purposes of the foregoing sentence, "Employees" shall include prospective
Employees to whom Options are granted in connection with written offers of
employment with the Participating Company Group. Eligible persons may be granted
more than one (1) Option.

          5.2  OPTION GRANT RESTRICTIONS. Only Nonstatutory Stock Options can be
granted under the Plan. A Nonstatutory Stock Option granted to a prospective
Employee upon the condition that such person become an Employee shall be deemed
granted effective on the date such person commences service with a Participating
Company.

     6.   TERMS AND CONDITIONS OF OPTIONS. Options shall be evidenced by Option
Agreements specifying the number of shares of Stock covered thereby, in such
form as the Board shall from time to time establish. Option Agreements may
incorporate all or any of the terms of the Plan by reference and shall comply
with and be subject to the following terms and conditions:

          6.1  EXERCISE PRICE. The exercise price for each Option shall be
established in the sole discretion of the Board; provided, however, that the
exercise price per share for a Nonstatutory Stock Option shall be not less than
eighty-five percent (85%) of the Fair Market

<PAGE>

Value of a share of Stock on the effective date of grant of the Option.
Notwithstanding the foregoing, an Option may be granted with an exercise price
lower than the minimum exercise price set forth above if such Option is granted
pursuant to an assumption or substitution for another option in a manner
qualifying under the provisions of Section 424(a) of the Code.

          6.2  EXERCISE PERIOD. Options shall be exercisable at such time or
times, or upon such event or events, and subject to such terms, conditions,
performance criteria, and restrictions as shall be determined by the Board and
set forth in the Option Agreement evidencing such Option; provided, however,
that (a) no Option shall be exercisable after the expiration of ten (10) years
after the effective date of grant of such Option, and (b) no Option granted to a
prospective Employee or prospective Consultant may become exercisable prior to
the date on which such person commences service with a Participating Company.

          6.3  PAYMENT OF EXERCISE PRICE.

               (a)  FORMS OF CONSIDERATION AUTHORIZED. Except as otherwise
provided below, payment of the exercise price for the number of shares of Stock
being purchased pursuant to any Option shall be made (i) in cash, by check, or
cash equivalent, (ii) by tender to the Company of shares of Stock owned by the
Optionee having a Fair Market Value (as determined by the Company without regard
to any restrictions on transferability applicable to such stock by reason of
federal or state securities laws or agreements with an underwriter for the
Company) not less than the exercise price, (iii) by the assignment of the
proceeds of a sale or loan with respect to some or all of the shares being
acquired upon the exercise of the Option (including, without limitation, through
an exercise complying with the provisions of Regulation T as promulgated from
time to time by the Board of Governors of the Federal Reserve System) (a
"CASHLESS EXERCISE"), (iv) by the Optionee's promissory note in a form approved
by the Company, (v) by such other consideration as may be approved by the Board
from time to time to the extent permitted by applicable law, or (vi) by any
combination thereof. The Board may at any time or from time to time, by adoption
of or by amendment to the standard forms of Option Agreement described in
Section 7, or by other means, grant Options which do not permit all of the
foregoing forms of consideration to be used in payment of the exercise price or
which otherwise restrict one or more forms of consideration.

               (b)  TENDER OF STOCK. Notwithstanding the foregoing, an Option
may not be exercised by tender to the Company of shares of Stock to the extent
such tender of Stock would constitute a violation of the provisions of any law,
regulation or agreement restricting the redemption of the Company's stock.
Unless otherwise provided by the Board, an Option may not be exercised by tender
to the Company of shares of Stock unless such shares either have been owned by
the Optionee for more than six (6) months or were not acquired, directly or
indirectly, from the Company.

               (c)  CASHLESS EXERCISE. The Company reserves, at any and all
times, the right, in the Company's sole and absolute discretion, to establish,
decline to approve or terminate any program or procedures for the exercise of
Options by means of a Cashless Exercise.

               (d)  PAYMENT BY PROMISSORY NOTE. No promissory note shall be

<PAGE>

permitted if the exercise of an Option using a promissory note would be a
violation of any law. Any permitted promissory note shall be on such terms as
the Board shall determine at the time the Option is granted. The Board shall
have the authority to permit or require the Optionee to secure any promissory
note used to exercise an Option with the shares of Stock acquired upon the
exercise of the Option or with other collateral acceptable to the Company.
Unless otherwise provided by the Board, if the Company at any time is subject to
the regulations promulgated by the Board of Governors of the Federal Reserve
System or any other governmental entity affecting the extension of credit in
connection with the Company's securities, any promissory note shall comply with
such applicable regulations, and the Optionee shall pay the unpaid principal and
accrued interest, if any, to the extent necessary to comply with such applicable
regulations.

          6.4  TAX WITHHOLDING. The Company shall have the right, but not the
obligation, to deduct from the shares of Stock issuable upon the exercise of an
Option, or to accept from the Optionee the tender of, a number of whole shares
of Stock having a Fair Market Value, as determined by the Company, equal to all
or any part of the federal, state, local and foreign taxes, if any, required by
law to be withheld by the Participating Company Group with respect to such
Option or the shares acquired upon the exercise thereof. Alternatively or in
addition, in its sole discretion, the Company shall have the right to require
the Optionee, through payroll withholding, cash payment or otherwise, including
by means of a Cashless Exercise, to make adequate provision for any such tax
withholding obligations of the Participating Company Group arising in connection
with the Option or the shares acquired upon the exercise thereof. The Company
shall have no obligation to deliver shares of Stock or to release shares of
Stock from an escrow established pursuant to the Option Agreement until the
Participating Company Group's tax withholding obligations have been satisfied by
the Optionee.

     7.   STANDARD FORMS OF OPTION AGREEMENT.

          7.1  NONSTATUTORY STOCK OPTIONS. Unless otherwise provided by the
Board at the time the Option is granted, an Option designated as a "Nonstatutory
Stock Option" shall comply with and be subject to the terms and conditions set
forth in the form of Nonstatutory Stock Option Agreement adopted by the Board
concurrently with its adoption of the Plan and as amended from time to time.

          7.2  STANDARD TERM OF OPTIONS. Except as otherwise provided in Section
6.2 or by the Board in the grant of an Option, any Option granted hereunder
shall have a term of ten (10) years from the effective date of grant of the
Option.

          7.3  AUTHORITY TO VARY TERMS. The Board shall have the authority from
time to time to vary the terms of any of the standard forms of Option Agreement
described in this Section 7 either in connection with the grant or amendment of
an individual Option or in connection with the authorization of a new standard
form or forms; provided, however, that the terms and conditions of any such new,
revised or amended standard form or forms of Option Agreement are not
inconsistent with the terms of the Plan. Such authority shall include, but not
by way of limitation, the authority to grant Options which are immediately
exercisable.

     8.   TRANSFER OF CONTROL.

<PAGE>

          8.1  DEFINITIONS.

               (a)  An "OWNERSHIP CHANGE EVENT" shall be deemed to have occurred
if any of the following occurs with respect to the Company:

                    (i)   the direct or indirect sale or exchange in a single or
series of related transactions by the stockholders of the Company of more than
fifty percent (50%) of the voting stock of the Company;

                    (ii)  a merger or consolidation in which the Company is a
party;

                    (iii) the sale, exchange, or transfer of all or
substantially all of the assets of the Company; or

                    (iv)  a liquidation or dissolution of the Company.

               (b)  A "TRANSFER OF CONTROL" shall mean an Ownership Change Event
or a series of related Ownership Change Events (collectively, the "TRANSACTION")
wherein the stockholders of the Company immediately before the Transaction do
not retain immediately after the Transaction, in substantially the same
proportions as their ownership of shares of the Company's voting stock
immediately before the Transaction, direct or indirect beneficial ownership of
more than fifty percent (50%) of the total combined voting power of the
outstanding voting stock of the Company or the corporation or corporations to
which the assets of the Company were transferred (the "TRANSFEREE
CORPORATION(S)"), as the case may be. For purposes of the preceding sentence,
indirect beneficial ownership shall include, without limitation, an interest
resulting from ownership of the voting stock of one or more corporations which,
as a result of the Transaction, own the Company or the Transferee
Corporation(s), as the case may be, either directly or through one or more
subsidiary corporations. The Board shall have the right to determine whether
multiple sales or exchanges of the voting stock of the Company or multiple
Ownership Change Events are related, and its determination shall be final,
binding and conclusive.

<PAGE>

          8.2  EFFECT OF TRANSFER OF CONTROL ON OPTIONS. In the event of a
Transfer of Control, the surviving, continuing, successor, or purchasing
corporation or parent corporation thereof, as the case may be (the "ACQUIRING
CORPORATION"), may either assume the Company's rights and obligations under
outstanding Options or substitute for outstanding Options substantially
equivalent options for the Acquiring Corporation's stock. Any Options which are
neither assumed or substituted for by the Acquiring Corporation in connection
with the Transfer of Control nor exercised as of the date of the Transfer of
Control shall terminate and cease to be outstanding effective as of the date of
the Transfer of Control. Notwithstanding the foregoing, shares acquired upon
exercise of an Option prior to the Transfer of Control and any consideration
received pursuant to the Transfer of Control with respect to such shares shall
continue to be subject to all applicable provisions of the Option Agreement
evidencing such Option except as otherwise provided in such Option Agreement.
Furthermore, notwithstanding the foregoing, if the corporation the stock of
which is subject to the outstanding Options immediately prior to an Ownership
Change Event described in Section 8.1(a)(i) constituting a Transfer of Control
is the surviving or continuing corporation and immediately after such Ownership
Change Event less than fifty percent (50%) of the total combined voting power of
its voting stock is held by another corporation or by other corporations that
are members of an affiliated group within the meaning of Section 1504(a) of the
Code without regard to the provisions of Section 1504(b) of the Code, the
outstanding Options shall not terminate unless the Board otherwise provides in
its sole discretion.

     9.   PROVISION OF INFORMATION. Each Optionee shall be given access to
information concerning the Company equivalent to that information generally made
available to the Company's common stockholders.

     10.  NONTRANSFERABILITY OF OPTIONS. During the lifetime of the Optionee, an
Option shall be exercisable only by the Optionee or the Optionee's guardian or
legal representative. No Option shall be assignable or transferable by the
Optionee, except by will or by the laws of descent and distribution.

     11.  INDEMNIFICATION. In addition to such other rights of indemnification
as they may have as members of the Board or officers or employees of the
Participating Company Group, members of the Board and any officers or employees
of the Participating Company Group to whom authority to act for the Board is
delegated shall be indemnified by the Company against all reasonable expenses,
including attorneys' fees, actually and necessarily incurred in connection with
the defense of any action, suit or proceeding, or in connection with any appeal
therein, to which they or any of them may be a party by reason of any action
taken or failure to act under or in connection with the Plan, or any right
granted hereunder, and against all amounts paid by them in settlement thereof
(provided such settlement is approved by independent legal counsel selected by
the Company) or paid by them in satisfaction of a judgment in any such action,
suit or proceeding, except in relation to matters as to which it shall be
adjudged in such action, suit or proceeding that such person is liable for gross
negligence, bad faith or intentional misconduct in duties; provided, however,
that within sixty (60) days after the institution of such action, suit or
proceeding, such person shall offer to the Company, in writing, the opportunity
at its own expense to handle and defend the same.

<PAGE>

     12.  TERMINATION OR AMENDMENT OF PLAN. The Board may terminate or amend the
Plan at any time. However, subject to changes in the law or other legal
requirements that would permit otherwise, without the approval of the Company's
stockholders, there shall be (a) no increase in the maximum aggregate number of
shares of Stock that may be issued under the Plan (except by operation of the
provisions of Section 4.2), and (b) no change in the class of persons eligible
to receive Options. In any event, no termination or amendment of the Plan may
adversely affect any then outstanding Option or any unexercised portion thereof,
without the consent of the Optionee, unless such termination or amendment is
necessary to comply with any applicable law or government regulation.

<PAGE>

                              PUMA TECHNOLOGY, INC.

                       NONSTATUTORY STOCK OPTION AGREEMENT

                   FOR THE 2000 SUPPLEMENTAL STOCK OPTION PLAN

     THIS NONSTATUTORY STOCK OPTION AGREEMENT (the "OPTION AGREEMENT") is made
and entered into as of ___________, 2000 by and between Puma Technology, Inc.
and ___________________________ (the "OPTIONEE").

     The Company has granted to the Optionee an option to purchase certain
shares of Stock, upon the terms and conditions set forth in this Option
Agreement (the "OPTION.

     1.   DEFINITIONS AND CONSTRUCTION.

          1.1  DEFINITIONS. Whenever used herein, the following terms shall have
their respective meanings set forth below:

               (a)  "DATE OF OPTION GRANT" means         , 200__.

               (b)  "NUMBER OF OPTION SHARES" means      shares of Stock, as
adjusted from time to time pursuant to Section 9.

               (c)  "EXERCISE PRICE" means $      per share of Stock, as
adjusted from time to time pursuant to Section 9.

               (d)  "INITIAL EXERCISE DATE" means the Initial Vesting Date.

               (e)  "INITIAL VESTING DATE" means the date occurring one (1) year
after (check one):

                    /_/  the Date of Option Grant.

                   /_/   __________________ , 200__, the date the Optionee's
                         Service commenced.

               (f)  "VESTED RATIO" means, on any relevant date, the ratio
determined as follows:

                                                   VESTED RATIO

                Prior to Initial Vesting Date
                                                   0

<PAGE>

<TABLE>
<CAPTION>

                                                                        VESTED RATIO
<S>                                                                     <C>
                On Initial Vesting Date, provided the Optionee's
                Service is continuous from the later of the Date            1/4
                of Option Grant or the Optionee's Service
                commencement date until the Initial Vesting Date

                PLUS

                For each full month of the Optionee's continuous
                Service from the Initial Vesting Date until the             1/48
                Vested Ratio equals 1/1, an additional
</TABLE>

               (g)  "OPTION EXPIRATION DATE" means the date ten (10) years after
the Date of Option Grant.

               (h)  "BOARD" means the Board of Directors of the Company. If one
or more Committees have been appointed by the Board to administer the Plan,
"Board" shall also mean such Committee(s).

               (i)  "CODE" means the Internal Revenue Code of 1986, as amended,
and any applicable regulations promulgated thereunder.

               (j)  "COMMITTEE" means the Compensation Committee or other
committee of the Board duly appointed to administer the Plan and having such
powers as shall be specified by the Board. Unless the powers of the Committee
have been specifically limited, the Committee shall have all of the powers of
the Board granted in the Plan, including, without limitation, the power to amend
or terminate the Plan at any time, subject to the terms of the Plan and any
applicable limitations imposed by law.

               (k)  "COMPANY" means Puma Technology, Inc., a Delaware
corporation, or any successor corporation thereto.

               (l)  "CONSULTANT" means any person, including an advisor, engaged
by a Participating Company to render services other than as an Employee or a
Director.

               (m)  "DIRECTOR" means a member of the Board or of the board of
directors of any other Participating Company.

               (n)  "DISABILITY" means the permanent and total disability of the
optionee within the meaning of Section 22(e)(3) of the Code.

               (o)  "EMPLOYEE" means any person treated as an employee (but not
including an executive officer or a Director of the Company) in the records of a
Participating Company.

               (p)  "EXCHANGE ACT" means the Securities Exchange Act of 1934, as
amended.

               (q)  "FAIR MARKET VALUE" means, as of any date, the value of a
share of stock or other property as determined by the Board, in its sole
discretion, or by the Company, in its sole discretion, if such determination is
expressly allocated to the Company herein.

<PAGE>

               (r)  "PARENT CORPORATION" means any present or future "parent
corporation" of the Company, as defined in Section 424(e) of the Code.

               (s)  "PARTICIPATING COMPANY" means the Company or any Parent
Corporation or Subsidiary Corporation.

               (t)  "PARTICIPATING COMPANY GROUP" means, at any point in time,
all corporations collectively which are then Participating Companies.

               (u)  "PLAN" means the Puma Technology, Inc. 2000 Supplemental
Stock Option Plan.

               (v)  "SECURITIES ACT" means the Securities Act of 1933, as
amended.

               (w)  "SERVICE" means the Optionee's employment or service with
the Participating Company Group, in the capacity of an Employee or Consultant.
The Optionee's Service shall not be deemed to have terminated merely because of
a change in the capacity in which the Optionee renders Service to the
Participating Company Group or a change in the Participating Company for which
the Optionee renders such Service, provided that there is no interruption or
termination of the Optionee's Service. The Optionee's Service shall be deemed to
have terminated either upon an actual termination of Service or upon the
corporation for which the Optionee performs Service ceasing to be a
Participating Company. Subject to the foregoing, the Company, in its sole
discretion, shall determine whether the Optionee's Service has terminated and
the effective date of such termination.

               (x)  "STOCK" means the common stock of the Company, as adjusted
from time to time in accordance with Section 9.

               (y)  "SUBSIDIARY CORPORATION" means any present or future
"subsidiary corporation" of the Company, as defined in Section 424(f) of the
Code.

          1.2  CONSTRUCTION. Captions and titles contained herein are for
convenience only and shall not affect the meaning or interpretation of any
provision of this Option Agreement. Except when otherwise indicated by the
context, the singular shall include the plural, the plural shall include the
singular, and the term "or" shall include the conjunctive as well as the
disjunctive.

     2.   TAX CONSEQUENCES.

          2.1  TAX STATUS OF OPTION. This Option is intended to be a
nonstatutory stock option and shall not be treated as an incentive stock option
within the meaning of Section 422(b) of the Code.

     3.   ADMINISTRATION. All questions of interpretation concerning this Option
Agreement shall be determined by the Board, including any duly appointed
Committee of the Board. All determinations by the Board shall be final and
binding upon all persons having an interest in the Option. Any officer of a
Participating Company shall have the authority to act on behalf of the Company
with respect to any matter, right, obligation, or election which is the
responsibility of or which is allocated to the Company herein, provided the
officer has apparent authority with respect to such matter, right, obligation,
or election.

     4.   EXERCISE OF THE OPTION.

          4.1  RIGHT TO EXERCISE. Except as otherwise provided herein, the
Option shall be exercisable on and after the Initial Exercise Date and prior to
the termination of the Option (as provided in Section 6) in an amount not to
exceed the Number of Option Shares less the number of shares previously acquired
upon exercise of the Option, subject to the Optionee's agreement that any shares
purchased upon exercise are subject to the Company's repurchase rights set forth
in Section 11.

<PAGE>

          4.2  METHOD OF EXERCISE. Exercise of the Option shall be by written
notice to the Company which must state the election to exercise the Option, the
number of whole shares of Stock for which the Option is being exercised and such
other representations and agreements as to the Optionee's investment intent with
respect to such shares as may be required pursuant to the provisions of this
Option Agreement. The written notice must be signed by the Optionee and must be
delivered in person, by certified or registered mail, return receipt requested,
by confirmed facsimile transmission, or by such other means as the Company may
permit, to the Chief Financial Officer of the Company, or other authorized
representative of the Participating Company Group, prior to the termination of
the Option as set forth in Section 6, accompanied by (i) full payment of the
aggregate Exercise Price for the number of shares of Stock being purchased and
(ii) an executed copy, if required herein, of the then current form of escrow
agreement referenced below. The Option shall be deemed to be exercised upon
receipt by the Company of such written notice, the aggregate Exercise Price,
and, if required by the Company, such executed agreement.

          4.3  PAYMENT OF EXERCISE PRICE.

               (a)  FORMS OF CONSIDERATION AUTHORIZED. Except as otherwise
provided below, payment of the aggregate Exercise Price for the number of shares
of Stock for which the Option is being exercised shall be made (i) in cash, by
check, or cash equivalent, (ii) by tender to the Company of whole shares of
Stock owned by the Optionee having a Fair Market Value (as determined by the
Company without regard to any restrictions on transferability applicable to such
stock by reason of federal or state securities laws or agreements with an
underwriter for the Company) not less than the aggregate Exercise Price, (iii)
by means of a Cashless Exercise, as defined in Section 4.3(c), or (iv) by any
combination of the foregoing.

               (b)  TENDER OF STOCK. Notwithstanding the foregoing, the Option
may not be exercised by tender to the Company of shares of Stock to the extent
such tender of Stock would constitute a violation of the provisions of any law,
regulation or agreement restricting the redemption of the Company's stock. The
Option may not be exercised by tender to the Company of shares of Stock unless
such shares either have been owned by the Optionee for more than six (6) months
or were not acquired, directly or indirectly, from the Company.

               (c)  CASHLESS EXERCISE. A "CASHLESS EXERCISE" means the
assignment in a form acceptable to the Company of the proceeds of a sale or loan
with respect to some or all of the shares of Stock acquired upon the exercise of
the Option pursuant to a program or procedure approved by the Company
(including, without limitation, through an exercise complying with the
provisions of Regulation T as promulgated from time to time by the Board of
Governors of the Federal Reserve System). The Company reserves, at any and all
times, the right, in the Company's sole and absolute discretion, to decline to
approve or terminate any such program or procedure.

          4.4  TAX WITHHOLDING. At the time the Option is exercised, in whole or
in part, or at any time thereafter as requested by the Company, the Optionee
hereby authorizes withholding from payroll and any other amounts payable to the
Optionee, and otherwise agrees to make adequate provision for (including by
means of a Cashless Exercise to the extent permitted by the Company), any sums
required to satisfy the federal, state, local and foreign tax withholding
obligations of the Participating Company Group, if any, which arise in
connection with the Option, including, without limitation, obligations arising
upon (i) the exercise, in whole or in part, of the Option, (ii) the transfer, in
whole or in part, of any shares acquired upon exercise of the Option, (iii) the
operation of any law or regulation providing for the imputation of interest, or
(iv) the lapsing of any restriction with respect to any shares acquired upon
exercise of the Option. The Optionee is cautioned that the Option is not
exercisable unless the tax withholding obligations of the Participating Company
Group are satisfied. Accordingly, the Optionee may not be able to exercise the
Option when desired even though the Option is vested, and the Company shall have
no obligation to issue a certificate for such shares or release such shares from
any escrow provided for herein.

          4.5  CERTIFICATE REGISTRATION. Except in the event the Exercise Price
is paid by means of a Cashless Exercise, the certificate for the shares as to
which the Option is exercised shall be registered in the name of the Optionee,
or, if applicable, in the names of the heirs of the Optionee.

<PAGE>

          4.6  RESTRICTIONS ON GRANT OF THE OPTION AND ISSUANCE OF SHARES. The
grant of the Option and the issuance of shares of Stock upon exercise of the
Option shall be subject to compliance with all applicable requirements of
federal, state or foreign law with respect to such securities. The Option may
not be exercised if the issuance of shares of Stock upon exercise would
constitute a violation of any applicable federal, state or foreign securities
laws or other law or regulations or the requirements of any stock exchange or
market system upon which the Stock may then be listed. In addition, the Option
may not be exercised unless (i) a registration statement under the Securities
Act shall at the time of exercise of the Option be in effect with respect to the
shares issuable upon exercise of the Option or (ii) in the opinion of legal
counsel to the Company, the shares issuable upon exercise of the Option may be
issued in accordance with the terms of an applicable exemption from the
registration requirements of the Securities Act. THE OPTIONEE IS CAUTIONED THAT
THE OPTION MAY NOT BE EXERCISED UNLESS THE FOREGOING CONDITIONS ARE SATISFIED.
ACCORDINGLY, THE OPTIONEE MAY NOT BE ABLE TO EXERCISE THE OPTION WHEN DESIRED
EVEN THOUGH THE OPTION IS VESTED. Questions concerning this restriction should
be directed to the Chief Financial Officer of the Company. The inability of the
Company to obtain from any regulatory body having jurisdiction the authority, if
any, deemed by the Company's legal counsel to be necessary to the lawful
issuance and sale of any shares subject to the Option shall relieve the Company
of any liability in respect of the failure to issue or sell such shares as to
which such requisite authority shall not have been obtained. As a condition to
the exercise of the Option, the Company may require the Optionee to satisfy any
qualifications that may be necessary or appropriate, to evidence compliance with
any applicable law or regulation and to make any representation or warranty with
respect thereto as may be requested by the Company.

          4.7  FRACTIONAL SHARES. The Company shall not be required to issue
fractional shares upon the exercise of the Option.

     5.   NONTRANSFERABILITY OF THE OPTION. The Option may be exercised during
the lifetime of the Optionee only by the Optionee or the Optionee's guardian or
legal representative and may not be assigned or transferred in any manner except
by will or by the laws of descent and distribution. Following the death of the
Optionee, the Option, to the extent provided in Section 7, may be exercised by
the Optionee's legal representative or by any person empowered to do so under
the deceased Optionee's will or under the then applicable laws of descent and
distribution.

     6.   TERMINATION OF THE OPTION. The Option shall terminate and may no
longer be exercised on the first to occur of (a) the Option Expiration Date, (b)
the last date for exercising the Option following termination of the Optionee's
Service as described in Section 7, or (c) a Transfer of Control to the extent
provided in Section 8.

     7.   EFFECT OF TERMINATION OF SERVICE.

          7.1  OPTION EXERCISABILITY.

               (a)  DISABILITY. If the Optionee's Service with the Participating
Company Group is terminated because of the Disability of the Optionee, the
Option, to the extent unexercised and exercisable on the date on which the
Optionee's Service terminated, may be exercised by the Optionee (or the
Optionee's guardian or legal representative) at any time prior to the expiration
of twelve (12) months after the date on which the Optionee's Service terminated,
but in any event no later than the Option Expiration Date.

               (b)  DEATH. If the Optionee's Service with the Participating
Company Group is terminated because of the death of the Optionee, the Option, to
the extent unexercised and exercisable on the date on which the Optionee's
Service terminated, may be exercised by the Optionee's legal representative or
other person who acquired the right to exercise the Option by reason of the
Optionee's death at any time prior to the expiration of twelve (12) months after
the date on which the Optionee's Service terminated, but in any event no later
than the Option Expiration Date. The Optionee's Service shall be deemed to have
terminated on account of death if the Optionee dies within three (3) months
after the Optionee's termination of Service.

               (c)  OTHER TERMINATION OF SERVICE. If the Optionee's Service with
the Participating Company Group terminates for any reason except Disability or
death, the Option, to the extent unexercised and

<PAGE>

exercisable by the Optionee on the date on which the Optionee's Service
terminated, may be exercised by the Optionee within three (3) months (or such
other longer period of time as determined by the Board, in its sole discretion)
after the date on which the Optionee's Service terminated, but in any event no
later than the Option Expiration Date.

          7.2  ADDITIONAL LIMITATION ON OPTION EXERCISE. Notwithstanding the
provisions of Section 7.1, the Option may not be exercised after the Optionee's
termination of Service to the extent that the shares to be acquired upon
exercise of the Option are not vested as of the date of the termination of
Service.

          7.3  EXTENSION IF EXERCISE PREVENTED BY LAW. Notwithstanding the
foregoing, if the exercise of the Option within the applicable time periods set
forth in Section 7.1 is prevented by the provisions of Section 4.6, the Option
shall remain exercisable until three (3) months after the date the Optionee is
notified by the Company that the Option is exercisable, but in any event no
later than the Option Expiration Date.

          7.4  EXTENSION IF OPTIONEE SUBJECT TO SECTION 16(b). Notwithstanding
the foregoing, if a sale within the applicable time periods set forth in Section
7.1 of shares acquired upon the exercise of the Option would subject the
Optionee to suit under Section 16(b) of the Exchange Act, the Option shall
remain exercisable until the earliest to occur of (i) the tenth (10th) day
following the date on which a sale of such shares by the Optionee would no
longer be subject to such suit, (ii) the one hundred and ninetieth (190th) day
after the Optionee's termination of Service, or (iii) the Option Expiration
Date.

          7.5  LEAVE OF ABSENCE. For purposes of Section 7.1, the Optionee's
Service with the Participating Company Group shall not be deemed to terminate if
the Optionee takes any military leave, sick leave, or other bona fide leave of
absence approved by the Company of ninety (90) days or less. In the event of a
leave of absence in excess of ninety (90) days, the Optionee's Service shall be
deemed to terminate on the ninety-first (91st) day of such leave unless the
Optionee's right to return to Service with the Participating Company Group
remains guaranteed by statute or contract. Notwithstanding the foregoing, unless
otherwise designated by the Company (or required by law), a leave of absence
shall not be treated as Service for purposes of determining the Optionee's
Vested Ratio.

     8.   TRANSFER OF CONTROL.

          8.1  DEFINITIONS.

               (a)  An "OWNERSHIP CHANGE EVENT" shall be deemed to have occurred
if any of the following occurs with respect to the Company:

                    (i)   the direct or indirect sale or exchange in a single or
series of related transactions by the stockholders of the Company of more than
fifty percent (50%) of the voting stock of the Company;

                    (ii)  a merger or consolidation in which the Company is a
party;

                    (iii) the sale, exchange, or transfer of all or
substantially all of the assets of the Company; or

                    (iv)  a liquidation or dissolution of the Company.

               (b)  A "TRANSFER OF CONTROL" shall mean an Ownership Change Event
or a series of related Ownership Change Events (collectively, the "TRANSACTION")
wherein the stockholders of the Company immediately before the Transaction do
not retain immediately after the Transaction, in substantially the same
proportions as their ownership of shares of the Company's voting stock
immediately before the Transaction, direct or indirect beneficial ownership of
more than fifty percent (50%) of the total combined voting power of the
outstanding voting stock of the Company or the corporation or corporations to
which the assets of the Company were transferred (the "TRANSFEREE
CORPORATION(S)"), as the case may be. For purposes of the preceding sentence,

<PAGE>

indirect beneficial ownership shall include, without limitation, an interest
resulting from ownership of the voting stock of one or more corporations which,
as a result of the Transaction, own the Company or the Transferee
Corporation(s), as the case may be, either directly or through one or more
subsidiary corporations. The Board shall have the right to determine whether
multiple sales or exchanges of the voting stock of the Company or multiple
Ownership Change Events are related, and its determination shall be final,
binding and conclusive.

          8.2  EFFECT OF TRANSFER OF CONTROL ON OPTION. In the event of a
Transfer of Control, the surviving, continuing, successor, or purchasing
corporation or parent corporation thereof, as the case may be (the "ACQUIRING
CORPORATION"), may either assume the Company's rights and obligations under the
Option or substitute for the Option a substantially equivalent option for the
Acquiring Corporation's stock. The Option shall terminate and cease to be
outstanding effective as of the date of the Transfer of Control to the extent
that the Option is neither assumed or substituted for by the Acquiring
Corporation in connection with the Transfer of Control nor exercised as of the
date of the Transfer of Control. Notwithstanding the foregoing, shares acquired
upon exercise of the Option prior to the Transfer of Control and any
consideration received pursuant to the Transfer of Control with respect to such
shares shall continue to be subject to all applicable provisions of this Option
Agreement except as otherwise provided herein. Furthermore, notwithstanding the
foregoing, if the corporation the stock of which is subject to the Option
immediately prior to an Ownership Change Event described in Section 8.1(a)(i)
constituting a Transfer of Control is the surviving or continuing corporation
and immediately after such Ownership Change Event less than fifty percent (50%)
of the total combined voting power of its voting stock is held by another
corporation or by other corporations that are members of an affiliated group
within the meaning of Section 1504(a) of the Code without regard to the
provisions of Section 1504(b) of the Code, the Option shall not terminate unless
the Board otherwise provides in its sole discretion.

     9.   ADJUSTMENTS FOR CHANGES IN CAPITAL STRUCTURE. In the event of any
stock dividend, stock split, reverse stock split, recapitalization, combination,
reclassification, or similar change in the capital structure of the Company,
appropriate adjustments shall be made in the number, Exercise Price and class of
shares of stock subject to the Option. If a majority of the shares which are of
the same class as the shares that are subject to the Option are exchanged for,
converted into, or otherwise become (whether or not pursuant to an Ownership
Change Event) shares of another corporation (the "NEW SHARES"), the Board may
unilaterally amend the Option to provide that the Option is exercisable for New
Shares. In the event of any such amendment, the Number of Option Shares and the
Exercise Price shall be adjusted in a fair and equitable manner, as determined
by the Board, in its sole discretion. Notwithstanding the foregoing, any
fractional share resulting from an adjustment pursuant to this Section 9 shall
be rounded up or down to the nearest whole number, as determined by the Board,
and in no event may the Exercise Price be decreased to an amount less than the
par value, if any, of the stock subject to the Option. The adjustments
determined by the Board pursuant to this Section 9 shall be final, binding and
conclusive.

     10.  RIGHTS AS A STOCKHOLDER, EMPLOYEE OR CONSULTANT. The Optionee shall
have no rights as a stockholder with respect to any shares covered by the Option
until the date of the issuance of a certificate for the shares for which the
Option has been exercised (as evidenced by the appropriate entry on the books of
the Company or of a duly authorized transfer agent of the Company). No
adjustment shall be made for dividends, distributions or other rights for which
the record date is prior to the date such certificate is issued, except as
provided in Section 9. Nothing in this Option Agreement shall confer upon the
Optionee any right to continue in the Service of a Participating Company or
interfere in any way with any right of the Participating Company Group to
terminate the Optionee's Service as an Employee or Consultant, as the case may
be, at any time.

     11.  BINDING EFFECT. Subject to the restrictions on transfer set forth
herein, this Option Agreement shall inure to the benefit of and be binding upon
the parties hereto and their respective heirs, executors, administrators,
successors and assigns.

     12.  TERMINATION OR AMENDMENT. The Board may terminate or amend the Plan or
the Option at any time; provided, however, that except as provided in Section
8.2 in connection with a Transfer of Control, no such termination or amendment
may adversely affect the Option or any unexercised portion hereof without the
consent of the Optionee unless such termination or amendment is necessary to
comply with any applicable law or government regulation. No amendment or
addition to this Option Agreement shall be effective unless in writing.

<PAGE>

     13.  INTEGRATED AGREEMENT. This Option Agreement constitutes the entire
understanding and agreement of the Optionee and the Participating Company Group
with respect to the subject matter contained herein, and there are no
agreements, understandings, restrictions, representations, or warranties among
the Optionee and the Participating Company Group with respect to such subject
matter other than those as set forth or provided for herein. To the extent
contemplated herein, the provisions of this Option Agreement shall survive any
exercise of the Option and shall remain in full force and effect.

     14.  APPLICABLE LAW. This Option Agreement shall be governed by the laws of
the State of California as such laws are applied to agreements between
California residents entered into and to be performed entirely within the State
of California.
                                             PUMA TECHNOLOGY, INC.

                                             By:___________________________

                                             Title:________________________

     The Optionee represents that the Optionee is familiar with the terms and
provisions of this Option Agreement and hereby accepts the Option subject to all
of the terms and provisions thereof. The Optionee hereby agrees to accept as
binding, conclusive and final all decisions or interpretations of the Board upon
any questions arising under this Option Agreement.

                                             OPTIONEE

Date:_____________________________           ________________________________

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