Document:

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                                                                   EXHIBIT 10.17

                           BOMBARDIER SOFTWARE, INC.

                        COMMON STOCK PURCHASE AGREEMENT

     This Common Stock Purchase Agreement (the "Agreement") is made as of August
                                                ---------
11, 1997, by and between Bombardier Software, Inc., a Delaware corporation (the
"Company"), and Linus Upson ("Purchaser").
 -------                      ---------

     1.  Sale of Stock.  Subject to the terms and conditions of this Agreement,
         -------------
on the Purchase Date (as defined below) the Company will issue and sell to
Purchaser, and Purchaser agrees to purchase from the Company, 960,000 shares of
the Company's Common Stock (the "Shares") at a purchase price of $0.01 per Share
                                 ------
for a total purchase price of $9,600.00.  The term "Shares" refers to the
purchased Shares and all securities received in replacement of or in connection
with the Shares pursuant to stock dividends or splits, all securities received
in replacement of the Shares in a recapitalization, merger, reorganization,
exchange or the like, and all new, substituted or additional securities or other
properties to which Purchaser is entitled by reason of Purchaser's ownership of
the Shares.

     2.  Purchase.  The purchase and sale of the Shares under this Agreement
         --------
shall occur at the principal office of the Company simultaneously with the
execution of this Agreement or at such other time and place as the Company and
Purchaser shall agree (the "Purchase Date").  On the Purchase Date, the Company
                            -------------
will deliver to Purchaser a certificate representing the Shares to be purchased
by Purchaser (which shall be issued in Purchaser's name) against payment of the
purchase price therefor by cash, check or an assignment of certain assets as set
forth in the Bill of Sale and Instrument of Assignment in the form attached to
this Agreement as Exhibit A.
                  ---------

     3.  Limitations on Transfer.  In addition to any other limitation on
         -----------------------
transfer created by applicable securities laws, Purchaser shall not assign,
encumber or dispose of any interest in the Shares while the Shares are subject
to the Company's Repurchase Option (as defined below), except as provided below.
After any Shares have been released from the Repurchase Option, Purchaser shall
not assign, encumber or dispose of any interest in such Shares except in
compliance with the provisions below and applicable securities laws.

         (a)  Repurchase Option.
              -----------------

              (i) In the event of the voluntary or involuntary termination of
Purchaser's employment or consulting relationship with the Company for any
reason (including death or disability), with or without cause, the Company shall
upon the date of such termination (the "Termination Date") have an irrevocable,
                                        ----------------
exclusive option (the "Repurchase Option") for a period of 60 days from such
                       -----------------
date to repurchase all or any portion of the Shares held by Purchaser as of the
Termination Date which have not yet been released from the Company's Repurchase
Option at the original purchase price per Share specified in Section 1 (adjusted
for any stock splits, stock dividends and the like); provided, however, that the
                                                     --------  -------
Repurchase Option shall

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continue for a period of up to one year from the Termination Date to the extent
that the Company reasonably determines that such an extension of time is
necessary to prevent the repurchase of Purchaser's Shares from causing other
capital stock of the Company to not qualify as "small business stock" under
Section 1202 of the Internal Revenue Code of 1986, as amended.

              (ii)   The Repurchase Option shall be exercised by the Company by
written notice to Purchaser or Purchaser's executor and, at the Company's
option, (A) by delivery to Purchaser or Purchaser's executor with such notice of
a check in the amount of the purchase price for the Shares being purchased, or
(B) in the event Purchaser is indebted to the Company, by cancellation by the
Company of an amount of such indebtedness equal to the purchase price for the
Shares being repurchased, or (C) by a combination of (A) and (B) so that the
combined payment and cancellation of indebtedness equals such purchase price.
Upon delivery of such notice and payment of the purchase price in any of the
ways described above, the Company shall become the legal and beneficial owner of
the Shares being repurchased and all rights and interest therein or related
thereto, and the Company shall have the right to transfer to its own name the
number of Shares being repurchased by the Company, without further action by
Purchaser.

              (iii)  The Repurchase Option shall be in effect with respect to
75% of the Shares and shall lapse as to 1/48 of such shares on the monthly
anniversary of the Vesting Commencement Date (as set forth on the signature page
of this Agreement), until all Shares are released from the Repurchase Option
(provided in each case that Purchaser's employment or consulting relationship
with the Company has not been terminated prior to the date of any such release).
The remaining 25% shall not be subject to the Repurchase Option. Fractional
shares shall be rounded to the nearest whole share.

          (b) Right of First Refusal.  Before any Shares held by Purchaser or
              ----------------------
any transferee of Purchaser (either being sometimes referred to herein as the
"Holder") may be sold or otherwise transferred (including transfer by gift or
 ------
operation of law), the Company or its assignee(s) shall have a right of first
refusal to purchase the Shares on the terms and conditions set forth in this
Section 3(b) (the "Right of First Refusal").
                   ----------------------

              (i)    Notice of Proposed Transfer.  The Holder of the Shares
                     ---------------------------
shall deliver to the Company a written notice (the "Notice") stating:  (A) the
                                                    ------
Holder's bona fide intention to sell or otherwise transfer such Shares; (B) the
name of each proposed purchaser or other transferee ("Proposed Transferee"); (C)
                                                      -------------------
the number of Shares to be transferred to each Proposed Transferee; and (D) the
terms and conditions of each proposed sale or transfer.  The Holder shall offer
the Shares at the same price (the "Offered Price") and upon the same terms (or
                                   -------------
terms as similar as reasonably possible) to the Company or its assignee(s).

              (ii)   Exercise of Right of First Refusal.  At any time within
                     ----------------------------------
thirty (30) days after receipt of the Notice, the Company and/or its assignee(s)
may, by giving written notice to the Holder, elect to purchase all, but not less
than all, of the Shares proposed to be transferred to any one or more of the
Proposed Transferees, at the purchase price determined in accordance with
subsection (iii) below.

                                      -2-
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               (iii) Purchase Price. The purchase price ("Purchase Price") for
                     --------------                       --------------
the Shares purchased by the Company or its assignee(s) under this Section 3(b)
shall be the Offered Price. If the Offered Price includes consideration other
than cash, the cash equivalent value of the non-cash consideration shall be
determined by the Board of Directors of the Company in good faith.

               (iv)  Payment.  Payment of the Purchase Price shall be made, at
                     -------
the option of the Company or its assignee(s), in cash (by check), by
cancellation of all or a portion of any outstanding indebtedness of the Holder
to the Company (or, in the case of repurchase by an assignee, to the assignee),
or by any combination thereof within 30 days after receipt of the Notice or in
the manner and at the times set forth in the Notice.

               (v)   Holder's Right to Transfer.  If all of the Shares
                     --------------------------
proposed in the Notice to be transferred to a given Proposed Transferee are not
purchased by the Company and/or its assignee(s) as provided in this Section
3(b), then the Holder may sell or otherwise transfer such Shares to that
Proposed Transferee at the Offered Price or at a higher price, provided that
such sale or other transfer is consummated within 60 days after the date of the
Notice and provided further that any such sale or other transfer is effected in
accordance with any applicable securities laws and the Proposed Transferee
agrees in writing that the provisions of this Section 3 shall continue to apply
to the Shares in the hands of such Proposed Transferee. If the Shares described
in the Notice are not transferred to the Proposed Transferee within such period,
or if the Holder proposes to change the price or other terms to make them more
favorable to the Proposed Transferee, a new Notice shall be given to the
Company, and the Company and/or its assignees shall again be offered the Right
of First Refusal before any Shares held by the Holder may be sold or otherwise
transferred.

               (vi)  Exception for Certain Family Transfers.  Anything to the
                     --------------------------------------
contrary contained in this Section 3(b) notwithstanding, the transfer of any or
all of the Shares during Purchaser's lifetime or on Purchaser's death by will or
intestacy to Purchaser's Immediate Family or a trust for the benefit of
Purchaser's Immediate Family shall be exempt from the provisions of this Section
3(b).  "Immediate Family" as used herein shall mean spouse, lineal descendant or
        ----------------
antecedent, father, mother, brother or sister.  In such case, the transferee or
other recipient shall receive and hold the Shares so transferred subject to the
provisions of this Section, and there shall be no further transfer of such
Shares except in accordance with the terms of this Section 3.

          (c)  Involuntary Transfer.
               --------------------

               (i)   Company's Right to Purchase upon Involuntary Transfer.
                     -----------------------------------------------------
In the event, at any time after the date of this Agreement, of any transfer by
operation of law or other involuntary transfer (including death or divorce, but
excluding a transfer to Immediate Family as set forth in Section 3(b)(vi) above)
of all or a portion of the Shares by the record holder thereof, the Company
shall have an option to purchase all of the Shares transferred at the greater of
the purchase price paid by Purchaser pursuant to this Agreement or the fair
market value of the Shares on the date of transfer.  Upon such a transfer, the
person acquiring the Shares shall promptly notify the Secretary of the Company
of such transfer.  The right to purchase such

                                      -3-
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Shares shall be provided to the Company for a period of 30 days following
receipt by the Company of written notice by the person acquiring the Shares.

              (ii) Price for Involuntary Transfer. With respect to any stock to
                   ------------------------------
be transferred pursuant to Section 3(c)(i), the price per Share shall be a price
set by the Board of Directors of the Company that will reflect the current value
of the stock in terms of present earnings and future prospects of the Company.
The Company shall notify Purchaser or his or her executor of the price so
determined within 30 days after receipt by it of written notice of the transfer
or proposed transfer of Shares. However, if the Purchaser does not agree with
the valuation as determined by the Board of Directors of the Company, the
Purchaser shall be entitled to have the valuation determined by an independent
appraiser to be mutually agreed upon by the Company and the Purchaser and whose
fees shall be borne equally by the Company and the Purchaser.

          (d) Assignment.  The right of the Company to purchase any part of the
              ----------
Shares may be assigned in whole or in part to any stockholder or stockholders of
the Company or other persons or organizations; provided, however, that an
assignee, other than a corporation that is the parent or a 100% owned subsidiary
of the Company, must pay the Company, upon assignment of such right, cash equal
to the difference between the original purchase price and fair market value, if
the original purchase price is less than the fair market value of the Shares
subject to the assignment.

          (e) Restrictions Binding on Transferees.  All transferees of Shares or
              -----------------------------------
any interest therein will receive and hold such Shares or interest subject to
the provisions of this Agreement, including, insofar as applicable, the
Repurchase Option.  Any sale or transfer of the Company's Shares shall be void
unless the provisions of this Agreement are met.

          (f) Termination of Rights.  The right of first refusal granted the
              ---------------------
Company by Section 3(b) above and the option to repurchase the Shares in the
event of an involuntary transfer granted the Company by Section 3(c) above shall
terminate upon the first sale of Common Stock of the Company to the general
public pursuant to a registration statement filed with and declared effective by
the Securities and Exchange Commission under the Securities Act.  Upon
termination of the right of first refusal described in Section 3(b) and the
expiration or exercise of the Repurchase Option, a new certificate or
certificates representing the Shares not repurchased shall be issued, on
request, without the legend referred to in Section 6(a)(ii) below and delivered
to Purchaser.

     4.   Escrow of Unvested Shares.  For purposes of facilitating the
          -------------------------
enforcement of the provisions of Section 3 above, Purchaser agrees, immediately
upon receipt of the certificate(s) for the Shares subject to the Repurchase
Option, to deliver such certificate(s), together with an Assignment Separate
from Certificate in the form attached to this Agreement as Exhibit B executed by
                                                           ---------
Purchaser and by Purchaser's spouse (if required for transfer), in blank, to the
Secretary of the Company, or the Secretary's designee, to hold such
certificate(s) and Assignment Separate from Certificate in escrow and to take
all such actions and to effectuate all such

                                      -4-
<PAGE>

transfers and/or releases as are in accordance with the terms of this Agreement.
Purchaser hereby acknowledges that the Secretary of the Company, or the
Secretary's designee, is so appointed as the escrow holder with the foregoing
authorities as a material inducement to make this Agreement and that said
appointment is coupled with an interest and is accordingly irrevocable.
Purchaser agrees that said escrow holder shall not be liable to any party hereof
(or to any other party). The escrow holder may rely upon any letter, notice or
other document executed by any signature purported to be genuine and may resign
at any time. Purchaser agrees that if the Secretary of the Company, or the
Secretary's designee, resigns as escrow holder for any or no reason, the Board
of Directors of the Company shall have the power to appoint a successor to serve
as escrow holder pursuant to the terms of this Agreement.

     5.   Investment and Taxation Representations.  In connection with the
          ---------------------------------------
purchase of the Shares, Purchaser represents to the Company the following:

          (a) Purchaser is aware of the Company's business affairs and financial
condition and has acquired sufficient information about the Company to reach an
informed and knowledgeable decision to acquire the Shares.  Purchaser is
purchasing the Shares for investment for his or her own account only and not
with a view to, or for resale in connection with, any "distribution" thereof
within the meaning of the Securities Act.

          (b) Purchaser understands that the Shares have not been registered
under the Securities Act by reason of a specific exemption therefrom, which
exemption depends upon, among other things, the bona fide nature of Purchaser's
investment intent as expressed herein.

          (c) Purchaser further acknowledges and understands that the Shares
must be held indefinitely unless they are subsequently registered under the
Securities Act or an exemption from such registration is available.  Purchaser
further acknowledges and understands that the Company is under no obligation to
register the Shares.  Purchaser understands that the certificate evidencing the
Shares will be imprinted with a legend which prohibits the transfer of the
Shares unless they are registered or such registration is not required in the
opinion of counsel for the Company.

          (d) Purchaser is familiar with the provisions of Rules 144 and 701,
each promulgated under the Securities Act, which, in substance, permit limited
public resale of "restricted securities" acquired, directly or indirectly, from
the issuer thereof (or from an affiliate of such issuer), in a non-public
offering subject to the satisfaction of certain conditions.  Rule 701 provides
that if the issuer qualifies under Rule 701 at the time of issuance of the
securities, such issuance will be exempt from registration under the Securities
Act.  In the event the Company becomes subject to the reporting requirements of
Section 13 or 15(d) of the Securities Exchange Act of 1934 (the "Exchange Act"),
                                                                 ------------
the securities exempt under Rule 701 may be resold by Purchaser 90 days
thereafter, subject to the satisfaction of certain of the conditions specified
by Rule 144, including, among other things:  (1) the sale being made through a
broker in an unsolicited "broker's transaction" or in transactions directly with
a market

                                      -5-
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maker (as said term is defined under the Exchange Act); and (2) in the case of
an affiliate, the availability of certain public information about the Company,
and the amount of securities being sold during any three month period not
exceeding the limitations specified in Rule 144(e), if applicable.
Notwithstanding this Section 5(d), Purchaser acknowledges and agrees to the
restrictions set forth in Section 5(f) hereof.

     In the event that the Company does not qualify under Rule 701 at the time
of purchase, then the Shares may be resold by Purchaser in certain limited
circumstances subject to the provisions of Rule 144, which requires, among other
things:  (1) the availability of certain public information about the Company;
(2) the resale occurring not less than one year after the party has purchased,
and made full payment of (within the meaning of Rule 144), the securities to be
sold; and, in the case of an affiliate, or of a non-affiliate who has held the
securities less than two years, (3) the sale being made through a broker in an
unsolicited "broker's transaction" or in transactions directly with a market
maker (as such term is defined under the Exchange Act) and the amount of
securities being sold during any three month period not exceeding the specified
limitations stated therein, if applicable.

          (e) Purchaser further understands that at the time he or she wishes to
sell the Shares there may be no public market upon which to make such a sale,
and that, even if such a public market then exists, the Company may not be
satisfying the current public information requirements of Rule 144 or 701, and
that, in such event, Purchaser would be precluded from selling the Shares under
Rule 144 or 701 even if the one-year minimum holding period had been satisfied.

          (f) Purchaser further understands that in the event all of the
applicable requirements of Rule 144 or 701 are not satisfied, registration under
the Securities Act, compliance with Regulation A, or some other registration
exemption will be required; and that, notwithstanding the fact that Rules 144
and 701 are not exclusive, the Staff of the Securities and Exchange Commission
has expressed its opinion that persons proposing to sell private placement
securities other than in a registered offering and otherwise than pursuant to
Rule 144 or 701 will have a substantial burden of proof in establishing that an
exemption from registration is available for such offers or sales, and that such
persons and their respective brokers who participate in such transactions do so
at their own risk.

          (g) Purchaser understands that Purchaser may suffer adverse tax
consequences as a result of Purchaser's purchase or disposition of the Shares.
Purchaser represents that Purchaser has consulted any tax consultants Purchaser
deems advisable in connection the purchase or disposition of the Shares and that
Purchaser is not relying on the Company for any tax advice.

                                      -6-
<PAGE>

     6.   Restrictive Legends and Stop-Transfer Orders.
          --------------------------------------------

          (a) Legends.  The certificate or certificates representing the Shares
              -------
shall bear the following legends (as well as any legends required by applicable
state and federal corporate and securities laws):

              (i)   THE SHARES REPRESENTED BY THIS CERTIFICATE HAVE
                    NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF
                    1933, AND HAVE BEEN ACQUIRED FOR INVESTMENT AND
                    NOT WITH A VIEW TO, OR IN CONNECTION WITH, THE
                    SALE OR DISTRIBUTION THEREOF. NO SUCH SALE OR
                    DISPOSITION MAY BE EFFECTED WITHOUT AN EFFECTIVE
                    REGISTRATION STATEMENT RELATED THERETO OR AN
                    OPINION OF COUNSEL FOR THE COMPANY THAT SUCH
                    REGISTRATION IS NOT REQUIRED UNDER THE SECURITIES
                    ACT OF 1933.

              (ii)  THE SHARES REPRESENTED BY THIS CERTIFICATE MAY BE
                    TRANSFERRED ONLY IN ACCORDANCE WITH THE TERMS OF
                    AN AGREEMENT BETWEEN THE COMPANY AND THE
                    STOCKHOLDER, A COPY OF WHICH IS ON FILE WITH THE
                    SECRETARY OF THE COMPANY.

              (iii) Any legend required to be placed thereon by the California
                    Commissioner of Corporations.

          (b) Stop-Transfer Notices.  Purchaser agrees that, in order to ensure
              ---------------------
compliance with the restrictions referred to herein, the Company may issue
appropriate "stop transfer" instructions to its transfer agent, if any, and
that, if the Company transfers its own securities, it may make appropriate
notations to the same effect in its own records.

          (c) Refusal to Transfer.  The Company shall not be required (i) to
              -------------------
transfer on its books any Shares that have been sold or otherwise transferred in
violation of any of the provisions of this Agreement or (ii) to treat as owner
of such Shares or to accord the right to vote or pay dividends to any purchaser
or other transferee to whom such Shares shall have been so transferred.

     7.   No Employment Rights.  Nothing in this Agreement shall affect in any
          --------------------
manner whatsoever the right or power of the Company, or a parent or subsidiary
of the Company, to terminate Purchaser's employment, for any reason, with or
without cause.

                                      -7-
<PAGE>

     8.  Section 83(b) Election. Purchaser understands that Section 83(a) of the
         ----------------------
Internal Revenue Code of 1986, as amended (the "Code"), taxes as ordinary income
                                                ----
the difference between the amount paid for the Shares and the fair market value
of the Shares as of the date any restrictions on the Shares lapse.  In this
context, "restriction" means the right of the Company to buy back the Shares
          -----------
pursuant to the Repurchase Option set forth in Section 3(a) of this Agreement.
Purchaser understands that Purchaser may elect to be taxed at the time the
Shares are purchased, rather than when and as the Repurchase Option expires, by
filing an election under Section 83(b) (an "83(b) Election") of the Code with
                                            --------------
the Internal Revenue Service within 30 days from the date of purchase.  Even if
the fair market value of the Shares at the time of the execution of this
Agreement equals the amount paid for the Shares, the election must be made to
avoid income under Section 83(a) in the future.  Purchaser understands that
failure to file such an election in a timely manner may result in adverse tax
consequences for Purchaser.  Purchaser further understands that an additional
copy of such election form should be filed with his or her federal income tax
return for the calendar year in which the date of this Agreement falls.
Purchaser acknowledges that the foregoing is only a summary of the effect of
United States federal income taxation with respect to purchase of the Shares
hereunder, and does not purport to be complete.  Purchaser further acknowledges
that the Company has directed Purchaser to seek independent advice regarding the
applicable provisions of the Code, the income tax laws of any municipality,
state or foreign country in which Purchaser may reside, and the tax consequences
of Purchaser's death.

         Purchaser agrees that he will execute and deliver to the Company with
this executed Agreement a copy of the Acknowledgment and Statement of Decision
Regarding Section 83(b) Election (the "Acknowledgment"), attached hereto as
                                       --------------
Exhibit C.  Purchaser further agrees that Purchaser will execute and submit with
---------
the Acknowledgment a copy of the 83(b) Election, attached hereto as Exhibit D,
                                                                    ---------
if Purchaser has indicated in the Acknowledgment his or her decision to make
such an election.

     9.  Market Standoff Agreement.  In connection with the initial public
         -------------------------
offering of the Company's securities and upon request of the Company or the
underwriters managing any underwritten offering of the Company's securities,
Purchaser agrees not to sell, make any short sale of, loan, grant any option for
the purchase of, or otherwise dispose of any Shares (other than those included
in the registration) without the prior written consent of the Company or such
underwriters, as the case may be, for such period of time (not to exceed 180
days) from the effective date of such registration as may be requested by the
Company or such managing underwriters and to execute an agreement reflecting the
foregoing as may be requested by the underwriters at the time of the public
offering.

     10. Miscellaneous.
         -------------

         (a) Governing Law.  This Agreement and all acts and transactions
             -------------
pursuant hereto and the rights and obligations of the parties hereto shall be
governed, construed and interpreted in accordance with the laws of the State of
California, without giving effect to principles of conflicts of law.

                                      -8-
<PAGE>

          (b) Entire Agreement; Enforcement of Rights.  This Agreement sets
              ---------------------------------------
forth the entire agreement and understanding of the parties relating to the
subject matter herein and merges all prior discussions between them.  No
modification of or amendment to this Agreement, nor any waiver of any rights
under this Agreement, shall be effective unless in writing signed by the parties
to this Agreement.  The failure by either party to enforce any rights under this
Agreement shall not be construed as a waiver of any rights of such party.

          (c) Severability.  If one or more provisions of this Agreement are
              ------------
held to be unenforceable under applicable law, the parties agree to renegotiate
such provision in good faith.  In the event that the parties cannot reach a
mutually agreeable and enforceable replacement for such provision, then (i) such
provision shall be excluded from this Agreement, (ii) the balance of the
Agreement shall be interpreted as if such provision were so excluded and (iii)
the balance of the Agreement shall be enforceable in accordance with its terms.

          (d) Construction.  This Agreement is the result of negotiations
              ------------
between and has been reviewed by each of the parties hereto and their respective
counsel, if any; accordingly, this Agreement shall be deemed to be the product
of all of the parties hereto, and no ambiguity shall be construed in favor of or
against any one of the parties hereto.

          (e) Notices.  Any notice required or permitted by this Agreement shall
              -------
be in writing and shall be deemed sufficient when delivered personally or sent
by telegram or fax or forty-eight (48) hours after being deposited in the U.S.
mail, as certified or registered mail, with postage prepaid, and addressed to
the party to be notified at such party's address as set forth below or as
subsequently modified by written notice.

          (f) Counterparts.  This Agreement may be executed in two or more
              ------------
counterparts, each of which shall be deemed an original and all of which
together shall constitute one instrument.

          (g) Successors and Assigns.  The rights and benefits of this Agreement
              ----------------------
shall inure to the benefit of, and be enforceable by the Company's successors
and assigns.  The rights and obligations of Purchaser under this Agreement may
only be assigned with the prior written consent of the Company.

          (h) California Corporate Securities Law.  THE SALE OF THE SECURITIES
              -----------------------------------
WHICH ARE THE SUBJECT OF THIS AGREEMENT HAS NOT BEEN QUALIFIED WITH THE
COMMISSIONER OF CORPORATIONS OF THE STATE OF CALIFORNIA AND THE ISSUANCE OF THE
SECURITIES OR THE PAYMENT OR RECEIPT OF ANY PART OF THE CONSIDERATION THEREFOR
PRIOR TO THE QUALIFICATION IS UNLAWFUL, UNLESS THE SALE OF SECURITIES IS EXEMPT
FROM QUALIFICATION BY SECTION 25100, 25102 OR 25105 OF THE CALIFORNIA
CORPORATIONS CODE.  THE RIGHTS OF ALL PARTIES TO THIS AGREEMENT ARE EXPRESSLY
CONDITIONED UPON THE QUALIFICATION BEING OBTAINED, UNLESS THE SALE IS SO EXEMPT.

                            [Signature Page Follows]

                                      -9-
<PAGE>

     The parties have executed this Agreement as of the date first set forth
above.

                                    BOMBARDIER SOFTWARE, INC.

                                    By: /s/ Felix Lin
                                        --------------------------

                                    Title: Chief Executive Officer
                                           -----------------------

                                    Address:

                                    1650 Amphlett Boulevard, Suite 114

                                    San Mateo, CA 94402

     PURCHASER ACKNOWLEDGES AND AGREES THAT THE VESTING OF SHARES PURSUANT TO
SECTION 3 HEREOF IS EARNED ONLY BY CONTINUING SERVICE AS AN EMPLOYEE OR
CONSULTANT AT THE WILL OF THE COMPANY.  PURCHASER FURTHER ACKNOWLEDGES AND
AGREES THAT NOTHING IN THIS AGREEMENT SHALL CONFER UPON PURCHASER ANY RIGHT WITH
RESPECT TO CONTINUATION OF SUCH EMPLOYMENT OR CONSULTING RELATIONSHIP WITH THE
COMPANY, NOR SHALL IT INTERFERE IN ANY WAY WITH PURCHASER'S RIGHT OR THE
COMPANY'S RIGHT TO TERMINATE PURCHASER'S EMPLOYMENT OR CONSULTING RELATIONSHIP
AT ANY TIME, WITH OR WITHOUT CAUSE.

                                      -10-
<PAGE>

                                    PURCHASER:

                                    LINUS UPSON

                                    /s/ Linus Upson
                                    ------------------------------

                                    (Signature)

                                    Address:

                                    P.O. Box 620603
                                    Woodside, CA 94062

     Vesting Commencement

     Date: May 10, 1997

     I, ________________________________, spouse of Linus Upson, have read and
hereby approve the foregoing Agreement.  In consideration of the Company's
granting my spouse the right to purchase the Shares as set forth in the
Agreement, I hereby agree to be irrevocably bound by the Agreement and further
agree that any community property or other such interest shall be similarly
bound by the Agreement.  I hereby appoint my spouse as my attorney-in-fact with
respect to any amendment or exercise of any rights under the Agreement.

                                    ______________________________
                                    Spouse of Linus Upson

                                      -11-
<PAGE>

                                   EXHIBIT A

                                  BILL OF SALE

   Linus Upson (the "Transferor"), for good and valuable consideration, the
                     ----------
receipt and sufficiency of which is hereby acknowledged, hereby sells,
transfers, assigns and conveys to Bombardier Software, Inc. and its successors
and assigns ("Transferee"), all of the assets listed on Attachment A hereto (the
              ----------                                ------------
"Assets").
 ------

   Transferor hereby appoints Transferee the attorney in fact of Transferor,
with full power of substitution on behalf of Transferee to demand and receive
any of the Assets and to give receipts and releases for the same, to institute
and prosecute in the name of Transferor, but for the benefit of Transferee, any
legal or equitable proceedings Transferee deems proper in order to enforce any
rights in the Assets and to defend or compromise any legal or equitable
proceedings relating to the Assets as Transferee shall deem advisable.
Transferor hereby declares that the appointment made and powers granted hereby
are coupled with an interest and shall be irrevocable by Transferor.

   Transferor hereby agrees that Transferor and Transferor's successors and
assigns will do, execute, acknowledge and deliver, or will cause to be done,
executed, acknowledged and delivered such further acts, documents, or
instruments confirming the conveyance of any of the Assets to Transferee as
Transferee shall reasonably deem necessary, provided that Transferee shall
provide all necessary documentation to Transferor.

   This Bill of Sale is executed and delivered in, and shall be construed and
enforced in accordance with the laws of the State of California, and shall be
binding upon and inure to the benefit of the successors and assigns of the
parties hereto.

   Transferor has signed this instrument as of August 11, 1997.

    /s/ LINUS UPSON
-----------------------------
Linus Upson, Transferor
<PAGE>

                          ATTACHMENT A TO BILL OF SALE

All business activities, materials and documentation (including business plans)
relating to the design, development and marketing of the Assets described below
(the "Business").

1.  Business plans: including business strategy, market analysis, financial
models, and other related information.

2.  Product presentations, product positioning, and lists of target customers.

3.  Product plans: including Release 1.0 products ("the essential information
solution"), Release 2.0 products ("the mobile client/server solution"), and
vertical market applications.

4.  Products in development:

    a.  Web client for the PalmPilot: capable of rendering HTML content composed
on desktop PCs or workstations, including support for images, and hypertext
links within and between HTML documents.

    b.  Companion desktop application: allowing individuals to specify the root
document of a cluster of HTML pages, the depth of a cluster to be retrieved, and
options to fetch images and maintain the currency of content. This application
is used to determine which clusters of web content will be available to the
PalmPilot.

    c.  Document server: allowing content managers to manage clusters of
documents on behalf of end users. Content managers can specify individual pages
or clusters of documents that will be synchronized with an individuals'
PalmPilot each time they HotSync.

5.  Core technology:

    a.  JavaSync: an API that allows Java applications to synchronize content
directly with the PalmPilot. Currently being used by the companion desktop
application to synchronize web pages with the PalmPilot, the API is generally
useful to a broad range of Java applications that manage content of interest to
PalmPilot users.

    b.  abc-HTML: a compressed, binary data format that represents a
semantically equivalent version of standard HTML documents. This format requires
less memory and allows faster resolution of hypertext links on the PalmPilot. In
addition, abc-HTML minimizes bandwidth usage for faster downloads between
desktops/servers and the PalmPilot.

    c.  Proprietary data communication protocols: providing a seamless extension
of the PalmPilot HotSync capability. These protocols improve the performance of
data exchanges between content servers, desktop applications, and the PalmPilot.
By minimizing bandwidth usage, these protocols also improve the viability of
wireless communication for the PalmPilot.

    d.  Image compression, image scaling, and content conversion facilities:
designed to automatically filter web content for the best possible presentation
on the PalmPilot.

                                      -2-
<PAGE>

                                   EXHIBIT B

                      ASSIGNMENT SEPARATE FROM CERTIFICATE

   FOR VALUE RECEIVED and pursuant to that certain Common Stock Purchase
Agreement between the undersigned ("Purchaser") and Bombardier Software, Inc.
                                    ---------
(the "Company") dated ________________ (the "Agreement"), Purchaser hereby
                                             ---------
sells, assigns and transfers unto the Company _________________________________
(_______) shares of the Common Stock of the Company standing in Purchaser's name
on the Company's books and represented by Certificate No. ________, and does
hereby irrevocably constitute and appoint __________ to transfer said stock on
the books of the Company with full power of substitution in the premises. THIS
ASSIGNMENT MAY ONLY BE USED AS AUTHORIZED BY THE AGREEMENT AND THE EXHIBITS
THERETO.

Dated: ______________________

                                   Signature:

                                   /s/ LINUS UPSON
                                   -------------------------------------
                                   Linus Upson

                                   -------------------------------------
                                   Spouse of Linus Upson (if applicable)

Instruction:  Please do not fill in any blanks other than the signature line.
The purpose of this assignment is to enable the Company to exercise its
repurchase option set forth in the Agreement without requiring additional
signatures on the part of Purchaser.
<PAGE>

                                   EXHIBIT C

                    ACKNOWLEDGMENT AND STATEMENT OF DECISION
                        REGARDING SECTION 83(b) ELECTION

    The undersigned has entered a stock purchase agreement with Bombardier
Software, Inc., a Delaware corporation (the "Company"), pursuant to which the
                                             -------
undersigned is purchasing 960,000 shares of Common Stock of the Company (the
"Shares"). In connection with the purchase of the Shares, the undersigned hereby
 ------
represents as follows:

    1.  The undersigned has carefully reviewed the stock purchase agreement
pursuant to which the undersigned is purchasing the Shares.

    2.  The undersigned either [check and complete as applicable]:

    (a)___has consulted, and has been fully advised by, the undersigned's own
          tax advisor, ________ whose business address is _____________________
          regarding the federal, state and local tax consequences of purchasing
          the Shares, and particularly regarding the advisability of making
          elections pursuant to Section 83(b) of the Internal Revenue Code of
          1986, as amended (the "Code") and pursuant to the corresponding
                                 ----
          provisions, if any, of applicable state law; or

    (b)___has knowingly chosen not to consult such a tax advisor.

    3.  The undersigned hereby states that the undersigned has decided [check as
applicable]:

    (a)___to make an election pursuant to Section 83(b) of the Code, and is
          submitting to the Company, together with the undersigned's executed
          Common Stock Purchase Agreement, an executed form entitled "Election
          Under Section 83(b) of the Internal Revenue Code of 1986;" or

    (b)___not to make an election pursuant to Section 83(b) of the Code.
<PAGE>

        4.  Neither the Company nor any subsidiary or representative of the
Company has made any warranty or representation to the undersigned with respect
to the tax consequences of the undersigned's purchase of the Shares or of the
making or failure to make an election pursuant to Section 83(b) of the Code or
the corresponding provisions, if any, of applicable state law.

Date: August 11, 1997                  /s/ LINUS UPSON
      -----------------------          ----------------------------
                                       Linus Upson

Date:
      -----------------------          ----------------------------
                                       Spouse of Linus Upson

                                      -2-
<PAGE>

                                    RECEIPT

        Bombardier Software, Inc. (the "Company") hereby acknowledges receipt of
                                        -------
the assets described in the Bill of Sale attached as Exhibit A to the Common
                                                     ---------
Stock Purchase Agreement dated August 11, 1997 between the Company and Linus
Upson as consideration for Certificate No. CS-2 for 960,000 shares of Common
Stock of the Company.

Dated:  August 11, 1997
      -----------------------

                                        BOMBARDIER SOFTWARE, INC.

                                        By:  /s/ FELIX LIN
                                           -------------------------

                                        Title:  CEO
                                              ----------------------

<PAGE>

                              RECEIPT AND CONSENT

        The undersigned hereby acknowledges receipt of a photocopy of
Certificate No. CS-2 for 960,000 shares of Common Stock of Bombardier Software,
Inc. (the "Company").
           -------

        The undersigned further acknowledges that the Secretary of the Company,
or his or her designee, is acting as escrow holder pursuant to the Common Stock
Purchase Agreement Purchaser has previously entered into with the Company. As
escrow holder, the Secretary of the Company, or his or her designee, holds the
original of the aforementioned certificate issued in the undersigned's name.

Dated:  August 11, 1997                   /s/ LINUS UPSON
      -----------------------            ----------------------------
                                         Linus Upson
<PAGE>

                                   EXHIBIT D

                         ELECTION UNDER SECTION 83(b)
                     OF THE INTERNAL REVENUE CODE OF 1986

    The undersigned taxpayer hereby elects, pursuant to Section 83(b) of the
Internal Revenue Code, to include in taxpayer's gross income for the current
taxable year, the amount of any compensation taxable to taxpayer in connection
with taxpayer's receipt of the property described below:

1.  The name, address, taxpayer identification number and taxable year of the
    undersigned are as follows:

    NAME OF TAXPAYER: Linus Upson

    NAME OF SPOUSE: N/A

    ADDRESS:  P.O. Box 620603
              Woodside, CA 94062

    IDENTIFICATION NO. OF TAXPAYER: ###-##-####

    IDENTIFICATION NO. OF SPOUSE: ______

    TAXABLE YEAR: 1997

2.  The property with respect to which the election is made is described as
    follows:

    675,000 shares of the Common Stock (the "Shares"), $0.0001 par value, of
    Bombardier Software, Inc., a Delaware corporation (the "Company").

3.  The date on which the property was transferred is: August 11, 1997

4.  The property is subject to the following restrictions:

    Repurchase option at cost in favor of the Company upon termination of
    taxpayer's employment or consulting relationship.

5.  The fair market value at the time of transfer, determined without regard to
    any restriction other than a restriction which by its terms will never
    lapse, of such property is: $6,750.00

6.  The amount (if any) paid for such property: $6,750.00

The undersigned has submitted a copy of this statement to the person for whom
the services were performed in connection with the undersigned's receipt of the
above-described property. The transferee of such property is the person
performing the services in connection with the transfer of said property.

The undersigned understands that the foregoing election may not be revoked
except with the consent of the Commissioner.

Dated:  August 11, 1997                   /s/ LINUS UPSON
      -----------------------            ----------------------------
                                         Taxpayer
Dated:
      -----------------------            ----------------------------
                                         Spouse of Taxpayer<PAGE>

                                                                   EXHIBIT 10.20

                               Pledge Agreement

     THIS PLEDGE AGREEMENT is entered into this 27th day of March, 2000 by and
between AVANTGO. INC., a Delaware corporation (the "Company") and THOMAS HUNTER
(the "Borrower").

     Section 1.  In order to secure payment of the promissory note dated March
27, 2000 (the "Note") payable to the Company, at its principal offices in the
principal amount of One Hundred Three Thousand Three Hundred Eleven Dollars and
Twenty-Five Cents ($103,311.25), which Note the Borrower delivered in connection
with a loan extended to the Borrower by the Company, the Borrower hereby grants
the Company a security interest in, and assigns, transfers and pledges to the
Company, the following securities and other property:

          (a) The stock certificate evidencing Fifty-Nine Thousand Thirty-Five
(59,035) shares of the Company's Common Stock (the "Common Stock") delivered to
and deposited with the Company as collateral for the Note; and

          (b) Any and all new, additional or different securities or other
property subsequently distributed with respect to the shares identified in
Subsection (a) above that are to be delivered to and deposited with the Company
pursuant to the requirements of Section 4 of this Agreement; and

          (c) Any and all other property and money that is delivered to or comes
into the possession of the Company pursuant to the terms and provisions of this
Agreement; and

          (d) [The Individual Retirement Account (the "Account") maintained at
Salomon Smith Barney in the name of Thomas Hunter, account number 494-67074-12;]
and
          (e) The proceeds of any sale, exchange or disposition of the property
and securities described in Subsection (a), Co), (c) or (d) above.

All securities, property and money to be assigned to, transferred to and pledged
with the Company shall be herein referred to as the "Collateral" and, in the
case of the securities, shall be accompanied by one or more stock power
assignments properly endorsed by the Borrower. The Company shall hold the
Collateral in accordance with the terms and provisions of this Agreement.

     Section 2.  Warranties. The Borrower hereby warrants that the Borrower is
the owner of the Collateral and has the right to pledge the Collateral and that
the Collateral is free from all liens, advance claims and other security
interests (other than those created hereby).

     Section 3.  Rights and Powers. The Company may, without obligation to do
so, exercise one or more of the following rights and powers with respect to the
Collateral:

                                      -1-

<PAGE>

          (a) Accept in its discretion, but subject to the applicable
limitations of Section 9, other property of the Borrower in exchange for all or
part of the Collateral and release Collateral to the Borrower to the extent
necessary to effect such exchange, and in such event the money, property or
securities received in the exchange shall be held by the Company as substitute
security for the Note and all other indebtedness secured hereunder;

          (b) Perform such acts as are necessary to preserve and protect the
Collateral and the rights, powers and remedies granted with respect to such
Collateral by this Agreement; and

          (c) Transfer record ownership of the Collateral to the Company or its
nominee add receive, endorse and give receipt for, or collect by legal
proceedings or otherwise, dividends or other distributions made or paid with
respect to the Collateral, but only if there exists at the time an outstanding
event of default under Section 10 of this Agreement.

          Any action by the Company pursuant to the provisions of this Section 3
may be taken without notice to the Borrower. Expenses reasonably incurred in
connection with such action shall be payable by the Borrower and form part of
the indebtedness secured hereunder, as provided in Section 12.

          So long as there exists no event of default under Section 10 of this
Agreement, the Borrower may exercise all shareholder voting rights and be
entitled to receive any and all regular cash dividends paid on the Collateral.
Accordingly, until such time as an event of default occurs under this Agreement,
all proxy statements and other shareholder materials pertaining to the
Collateral shall be delivered to the Borrower at the address indicated below.

          Any cash sums that the Company may receive in the exercise of its
rights and powers under this Section 3 shall be applied to the payment of the
Note and any other indebtedness secured hereunder, in such order of application
as the Company deems appropriate. Any remaining cash shall be paid over to the
Borrower.

     Section 4.  Duty to Deliver. Any new, additional or different securities
that may now or hereafter become distributable with respect to the Collateral by
reason of (i) any stock dividend, stock split or reclassification of the capital
stock of the Company or (ii) any merger, consolidation or other reorganization
affecting the capital structure of the Company shall, upon receipt by the
Borrower, be promptly delivered to and deposited with the Company as part of the
Collateral hereunder. Such securities shall be accompanied by one or more
properly endorsed stock power assignments.

     Section 5.  Care of Collateral. The Company shall exercise reasonable care
in the custody and preservation of the Collateral but shall have no obligation
to initiate any action with respect to, or otherwise inform the Borrower of, any
conversion, call, exchange right, preemptive right, subscription right, purchase
offer or other right or privilege relating to or affecting the Collateral;
provided, however, that the Company will notify the Borrower of any such rights
of the Borrower to protect against adverse claims or to protect the Collateral
against the possibility of a decline in market value. The Company shall not be
obligated to take any action with respect to the

                                      -2-
<PAGE>

Collateral requested by the Borrower unless the request is made in writing and
the Company determines that the requested action will not unreasonably
jeopardize the value of the Collateral as security for the Note and other
indebtedness secured hereunder.

          The Company may at any time release and deliver all or part of the
Collateral to the Borrower, and the receipt thereof by the Borrower shall
constitute a complete and full acquittance for the Collateral so released and
delivered. The Company shall accordingly be discharged from any further
liability or responsibility for the Collateral, and the released Collateral
shall no longer be subject to the provisions of this Agreement. However, any and
all releases of the Collateral shall be effected in compliance with the
applicable limitations of Section 9(a) and (c).

     Section 6.  Payment of Taxes and Other Charges. The Borrower shall pay,
prior to the delinquency date, all taxes, liens, assessments and other charges
against the Collateral, and in the event of the Borrower's failure to do so, the
Company may at its election pay any or all of such taxes and charges without
contesting the validity or legality thereof. The payments so made shall become
part of the indebtedness secured hereunder and, until paid, shall bear interest
at the minimum per annum rate, compounded annually, required to avoid the
imputation of interest income to the Company and compensation income to the
Borrower under the federal tax laws.

     Section 7.  Covenants of Borrower. Borrower will not (a) sell, assign,
convoy, lease or otherwise transfer or permit the transfer of the Collateral, or
any interest therein; or (b) create, permit or suffer to exist any mortgage,
pledge, hypothecation, assignment, security interest, lien charge or encumbrance
or preference, priority or other security agreement or arrangement of any kind
or nature whatsoever, in the Collateral, or any interest thereto.

     Section 8.  Transfer of Collateral. In connection with the transfer or
assignment of the Note (whether by negotiation, discount or otherwise), the
Company may transfer all or any part of the Collateral, and the transferee shall
thereupon succeed to all the rights, powers and remedies granted the Company
hereunder with respect to the Collateral so transferred, Upon such transfer, the
Company shall be fully discharged from all liability and responsibility for the
transferred Collateral.

     Section 9.  Release of Collateral. Provided (i) all indebtedness secured
hereunder (other than payments not yet due and payable under the Note) shall at
the time have been paid in full or cancelled and (ii) there does not otherwise
exist any event of default under Section 10, the pledged shares of Common Stock,
together with any additional Collateral that may hereafter be pledged and
deposited hereunder, shall be released from pledge and returned to the Borrower
in accordance with the following provisions:

          (a) Upon payment or prepayment of principal under the Note, together
with payment of all accrued interest to date, one or more shares of Common Stock
held as Collateral hereunder shall (subject to the limitation of Subsection (d)
below) be released to the Borrower within three days after such payment or
prepayment. The number of shares to be so released shall be equal to the number
obtained by multiplying (i) the total number of shares of Common Stock held
under this Agreement at the time of the payment or prepayment by (ii) a
fraction, the numerator of which

                                      -3-
<PAGE>

shall be the amount of the principal paid or prepaid and the denominator of
which shall be the unpaid principal balance of the Note immediately prior to
such payment or prepayment. In no event, however, shall any fractional shares be
released.

          (b) One or more shares of Common Stock held as Collateral hereunder
shall (subject to the limitation of Subsection (d) below) be released to a
stockbroker designated in writing by the Borrower and acceptable to the Company
for the sole purpose of effecting an immediate sale of the released shares,
provided that such stockbroker agrees to forward any proceeds (up to the balance
of principal and interest due under the Note) directly to the Company to be used
to satisfy the Note.

          (c) Any additional Collateral that may hereafter be pledged and
deposited with the Company (pursuant to the requirements of Section 4) with
respect to the shares of Common Stock pledged hereunder shall be released at the
same time the particular shares of Common Stock to which the additional
Collateral relates are to be released in accordance with the applicable
provisions of Subsection (a) or (b) above. Under no circumstances, however,
shall any shares of Common Stock or any other Collateral be released if
previously applied to the payment of any indebtedness secured hereunder.

          (d) In no event shall any shares of Common Stock be released pursuant
to the provisions of Subsections (a), (b) and (c) above if, and to the extent,
the fair market value of the Common Stock and all other Collateral that would
otherwise remain in pledge hereunder after such release is effected would be
less than the unpaid balance of the Note (principal and accrued interest).

     Section 10.  Events of Default. The occurrence of one or more of the
following events shall constitute an event of default under this agreement:

          (a) The failure of the Borrower to pay the principal and accrued
interest when due under the Note;

          (b) The failure of the Borrower to perform a material obligation
imposed upon the Borrower by reason of this Agreement; or

          (c) The breach of may covenant, representation or warranty of the
Borrower contained in this Agreement.

          Upon the occurrence of any such event of default, the Company may, at
its election, declare the Note and all other indebtedness secured hereunder to
be immediately due and payable and may exercise any or all of the rights and
remedies granted to a secured party under the provisions of the California
Uniform Commercial Code (as now or hereafter in effect), including (without
limitation) the power to dispose of the Collateral by public or private sale or
to accept the Collateral in full payment of the Note and all other indebtedness
secured hereunder.

          Any proceeds realized from the disposition of the Collateral pursuant
to the foregoing power of sale shall be applied first to the payment of
reasonable expenses incurred by the Company in connection with the disposition,
then to the payment of the Note and finally to any other indebtedness secured
hereunder. Any surplus proceeds shall be paid over to the Borrower.

                                      -4-
<PAGE>

However, in the event such proceeds prove insufficient to satisfy all
obligations of the Borrower under the Note, then the Borrower shall remain
personally liable for the resulting deficiency.

     Section 11.  Other Remedies. The rights, powers and remedies granted to the
Company and the Borrower pursuant to the provisions of this Agreement shall be
in addition to all rights, powers and remedies granted to the Company and the
Borrower under any statute or rule of law. Any forbearance, failure or delay by
the Company or the Borrower in exercising any right, power or remedy under this
Agreement shall not be deemed to be a waiver of such right, power or remedy. Any
single or partial exercise of any right, power or remedy under this Agreement
shall not preclude the further exercise thereof, and every right, power and
remedy of the Company and the Borrower under this Agreement shall continue in
full force and effect, unless such right, power or remedy is specifically waived
by an instrument executed by the Company or the Borrower, as the case may be.

     Section 12.  Costs and Expenses. All reasonable costs and expenses
(including reasonable attorneys fees) incurred by the Company in the exercise or
enforcement of any right, power or remedy granted it under this Agreement shall
become part of the indebtedness secured hereunder and shall constitute a
personal liability of the Borrower payable immediately upon demand and bearing
interest until paid at the Company's bank interest rate then being earned by the
Company on its deposits.

     Section 13.  Applicable Law. This Agreement shall be governed by and
construed in accordance with the laws of the State of California and shall be
binding upon the executors, administrators, heirs and assigns of the Borrower.

     Section 14.  Arbitration. Any controversy between the parties hereto
involving the construction or application of any terms, covenants or conditions
of this Agreement or the Note, or any claims arising out of or relating to this
Agreement or the Note, or the breach hereof or thereof, will be submitted to and
settled by final and binding arbitration in San Francisco, California, in
accordance with the rules of the American Arbitration Association then in
effect, and judgment upon the award rendered by the arbitrator may be entered in
any court having jurisdiction thereof. In the event of any arbitration under
this Agreement or the Note, the prevailing party shall be entitled to recover
from the losing party reasonable expenses, attorneys' fees and costs incurred
therein or in the enforcement or collection of any judgment or award rendered
therein. The "prevailing party" means the party determined by the arbitrator to
have most nearly prevailed, even if such party did not prevail in all matters,
not necessarily the one in whose favor a judgment is rendered.

     Section 15.  Severability. If any provision of this Agreement is held to be
invalid under applicable law, then such provision shall be ineffective only to
the extent of such invalidity, and neither the remainder of such provision nor
any other provisions of this Agreement shall be affected thereby.

                                      -5-
<PAGE>

          IN WITNESS WHEREOF, this Agreement has been executed by the Borrower
on this 30th day of August, 2000.

                                    /s/ Thomas Hunter
                                    ------------------------------
                                    Thomas Hunter

                       Address:     2173 Sierra Ventura
                                    ------------------------------
                                    Los Altos, CA 94024
                                    ------------------------------

Agreed to and Accepted by:

AVANTGO, INC.

By: /s/ Richard Owen
   -----------------------------------
Richard Owen, Chief Executive Officer

Dated: March 27, 2000

                                      -6-

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