Document:

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                                                                    EXHIBIT 10.8

                                         401[k] Standardized Profit Sharing Plan
                                                              Adoption Agreement
--------------------------------------------------------------------------------
Section 1    Employer Information

Name of Employer              AvantGo Inc.
                     --------------------------------------------------

  Address            1650 Amphlett Blvd #114
                     --------------------------------------------------

  City               San Mateo         State      CA       Zip    94402
                     -----------------       ------------         -----

  Telephone                          [******]
                     --------------------------------------------------

  Federal Tax Identification Number      [9][4] - [3][2][7][5][7][8][9]

  Income Tax Year End     12/31      Plan Year End        December 31
                       -----------                  -----------------------
                        Month/Day                          Month/Day

  Type of Business      [_] Sole Proprietorship
  (Check only one)      [_] Partnership
                        [X] Corporation
                        [_] Other (specify)
                                           ------------------------
 Nature of Business (Description)   other business 7398
                                -----------------------------------
 Plan Sequence No.     00       1
                          -------------
                       (Enter 001 if this is the first qualified plan the
                        Employer has ever maintained, enter 002 if it is the
                        second, etc.)

 Plan Name    AvantGo Inc. 401(k) Profit Sharing Plan & Trust
            ----------------------------------------------------------------

Section 2     Effective Dates

 Part A       Initial Adoption or Amendment of Plan: Check and complete Option 1
              or 2

  Option 1    This is the initial adoption of a profit sharing plan by the
              Employer. The Effective Date of this Plan is JANUARY 1, 1998.
                                                                        --
              NOTE: The effective date is usually the first day of the Plan Year
              in which this Adoption Agreement is signed.

  Option 2    This is an amendment and restatement of an existing profit sharing
              plan (a Prior Plan).
              The Prior Plan was initially effective on ___________, 19___.
              The Effective Date of this amendment and restatement is ______,
              19__.

              NOTE: The effective date is usually the first day of the Plan Year
              in which this Adoption Agreement is signed.

 Part B       Commencement of Elective Deferrals:
              Elective Deferrals may commence on     April 1          , 1998.
                                                 ---------------------    --

              Note: Complete this part only if Option 1 above was selected. This
              date may be no earlier then the date this Adoption Agreement is
              signed because Elective Deferrals cannot be made retroactively.

Section 3     Eligibility Requirements         Complete Parts A, B, C and D

  Part A      Years Of Eligibility Service Requirement:

          [X] An Employee will be eligible to become a Participant in the Plan
              after completing 1 (enter 0 or 1) Years of Eligibility Service.

              NOTE: If left blank, the Years of Eligibility Service required
              will be deemed to be 0.

          [_] With the exception of the initial Plan Year Effective Date, an
              Employee will be eligible to become a Participant in the Plan
              after completing   1   (enter 0 or 1) Years of Eligibility
              Service.

              NOTE: If left blank, the Years of Eligibility Service required
              will be deemed to be 0.

****** Certain information on this page has been omitted and filed separately
with the Securities and Exchange Commission. Confidential treatment has been
requested with respect to the omitted portions.

                                    Page 1
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  Part B      Age Requirement:
              An Employee will be eligible to become a Participant in the Plan
              after attaining age 21 (no more than 21).
              NOTE: If left blank, It will be deemed there is no age requirement
              for eligibility.

  Part C      Class of Employees Eligible to Participate:
              All Employees shall be eligible to became a Participant in the
              Plan, except those checked below:

              [X]  Those Employees Included in a unit of Employees covered by
              the terms of a collective bargaining agreement between Employee
              representatives (the term "Employee representatives" does not
              include any organization more than half of whose members are
              Employees who are owners, officers or executives of the Employer)
              and the Employer under which retirement benefits were the subject
              of good faith bargaining unless the agreement provides that such
              Employees are to be included in the Plan.

              [X]  Those Employees who are non-resident aliens pursuant to
              Section 410(b)(3)(C} of the Code and who received no earned income
              from the Employer which constitutes income from sources within the
              United States.

  Part D      Entry Date: The Entry Dates for participation shall be (Choose
              only one Option):

              Option 1:  [X] The first day of the Plan Year and the first day of
              the seventh month of the Plan Year.

              Option 2:  [_] Other (Specify)
                                            ------------------------------------
              NOTE: If Option 2 is selected, the Entry Dates specified must be
              more frequent than those described in Option 1.

Section 4     Elective Deferrals

  Part A      Will Elective Deferrals be permitted under this Plan? (Choose one)

              Option 1: [X]     Yes.
              Option 2: [_]     No.
              NOTE: If no option is selected, Option 2 will automatically apply.
              Complete the remainder of Section 4 only if Option 1 is selected.

  Part B      If Elective Deferrals are permitted under the Plan, a Contributing
              Participant may elect under a salary reduction agreement to have
              his Compensation reduced by an amount each pay period as described
              below (Choose one):

              Option 1: [X] An amount equal to a percentage of the Contributing
              Participant's Compensation from 1% to 15% in increments of 1%.

              Option 2: [_] An amount of the Contributing Participant's
              Compensation not less than $       and not more than $         .
              The amount of such reduction shall be contributed to the Plan by
              the Employer on behalf of the Contributing Participant. For any
              taxable year, a Contributing Participant's Elective Deferrals
              shall not exceed the limit contained in Section 402(g) of the Code
              in effect at the beginning of such taxable year.

  Part C      Participants who claim Excess Elective Deferrals for the preceding
              calendar year must submit their claims in writing to the Plan
              Administrator by Feb. 1.
              NOTE: This date should be a date prior to the Participant's tax
              return due date. If no date is selected, March 1 will be deemed to
              be selected.

                                    Page 2
<PAGE>

Section 5     Matching Contributions

  Part A      Will the Employer make Matching Contributions to the Plan on
              behalf of Contributing Participants? (Choose one)

              Option 1: [_]  Yes.
              Option 2: [X]  No.
              NOTE: If no option is selected, Option 2 will automatically apply.
              Complete the remainder of Section 5 only if Option 1 is selected.

  Part B      Matching Contribution Formula. If the Employer will make Matching
              Contributions, then the amount of such Matching Contributions made
              on behalf of a Contributing Participant each Plan Year shall be
              (Choose one):

              Option 1: [X]  An amount equal to ____% of such Contributing
              Participant's Elective Deferral.

              Option 2: [_]  An amount equal to the sum of ____% of the portion
              of such Contributing Participant's Elective Deferral which does
              not exceed ____% of the Contributing Participant's Compensation
              plus ____% of the portion of such contributing Participant's
              Elective Deferral which exceeds ____% of the Contributing
              Participant's Compensation.

              Option 3: [_]  Other Formula, (Specify)
                                                     ---------------------------
              NOTE: If Option 3 is selected, the formula specified can only
              allow Matching Contributions to be made with respect to a
              Contributing Participant's Elective Deferrals.

  Part C      Limit on Matching Contributions. Notwithstanding the matching
              contribution formula specified above, the Employer will not match
              a Contributing Participant's Elective Deferrals in excess of $____
              or ____% of such Contributing Participant's Compensation.

  Part D      Forfeitures of Excess Aggregate Contribution. Complete Part D only
              if Matching Contributions are not 100% Vested.

              Forfeitures of Excess Aggregate Contributions shall be (Choose
              one):

              Option 1: [_]  Allocated, after all other Forfeitures under the
              Plan, to each  Contributing Participant's Matching Contribution
              account in the ratio which each Contributing Participant's
              Compensation for the Plan Year bears to the total Compensation of
              all Contributing Participants for such Plan Year. Such Forfeitures
              will not be allocated to the account of any Highly Compensated
              Employee.

              Option 2: [X]  Applied to reduce Employer Contributions.
              Note: If no option is selected, Option 2 will be deemed to be
              selected.

Section 6     Qualified Nonelective Contributions

  Part A      Will the Employer make Qualified Nonelective Contributions to the
              Plan? (Choose one)

              Option 1: [X]  Yes.
              Option 2: [_]  No.

              If the Employer will make Qualified Nonelective Contributions,
              then the amount of such contribution to the Plan for each Plan
              Year shall be an amount determined by the Employer. NOTE: If no
              option is selected, Option 2 will automatically apply. Complete
              the remainder of Section 6 only if Option 1 is selected.

  Part B      Participants Entitled to Qualified Nonelective Contributions.
              Allocation of Qualified Nonelective Contributions shall be made to
              the Individual Accounts of (Choose one):

              Option 1: [_]  All Participants.
              Option 2: [X]  Only Participants who are not Highly Compensated
              Employees.

                                    Page 3
<PAGE>

  Part C      Allocation of Qualified Nonelective Contributions. Allocation of
              Qualified Nonelective Contributions to Participants entitled
              thereto shall be made (Choose one):

              Option 1: [X]  In the ratio which each Participant's Compensation
              for the Plan Year bears to the total Compensation of all
              Participants for such Plan Year.

              Option 2: [_]  In the ratio which each Participant's Compensation
              not in excess of $____________ for the Plan Year bears to the
              total Compensation of all Participants not in excess of $________
              for such Plan Year.

Section 7     Employer Profit Sharing Contribution and Allocation Formula

  Part A      Contribution Formula. For each Plan Year the Employer may, in Its
              sole discretion, contribute to the Plan an amount to be determined
              from year to year.

  Part B      Allocation Formula (Check Option 1 or 2):

              Option 1: [X]  Pro Rata Formula. Employer Contributions made
              pursuant to this Section and Forfeitures shall be allocated to the
              Individual Accounts of qualifying Participants in the ratio that
              each qualifying Participant's Compensation for the Plan Year bears
              to the total Compensation of all qualifying participant's for the
              Plan Year.

              Option 2: [_]  Integrated Formula. Employer Contributions made
              pursuant to this Section and Forfeitures shall be allocated as
              follows (Start with Step 3 if this Plan is not a Top-Heavy Plan):

                   Step 1. Employer Contributions and Forfeitures shall first be
                   allocated pro rata to qualifying Participants in the manner
                   described in Section 7, Part B, Option 1. The percent so
                   allocated shall not exceed 3% of each qualifying
                   participant's Compensation.

                   Step 2. Any Employer Contributions and Forfeitures remaining
                   after the allocation in Step 1 shall be allocated to each
                   qualifying Participant's Individual Account in the ratio that
                   each qualifying Participant's Compensation for the Plan Year
                   in excess of the integration level bears to all qualifying
                   Participants' Compensation in excess of the integration
                   level, but not in excess of 3%.

                   Step 3. Any Employer Contributions and Forfeitures remaining
                   after the allocation in Step 2 shall be allocated to each
                   qualifying Participant's Individual Account in the ratio that
                   the sum of each qualifying Participant's total Compensation
                   and Compensation in excess of the integration level bears to
                   the sum of all qualifying Participants' total Compensation
                   and Compensation in excess of the integration level, but not
                   in excess of the profit sharing maximum disparity rate as
                   described in Section 3.01(B)(3) of the Plan.

                   Step 4. Any Employer Contributions and Forfeitures remaining
                   after the allocation in Step 3 shall be allocated pro rata to
                   qualifying Participants in the manner described in Section 7,
                   Part B, Option 1.

              The Integration level shall be (Choose one):

              Option 1:  [_] The Taxable Wage Base
              Option 2:  [_] $________ (a dollar amount less than the Taxable
                         Wage Base)
              Option 3:  [_] ____% of the Taxable Wage Base

              NOTE: If no box is checked, the integration level shall be the
              Taxable Wage Base.

                                    Page 4
<PAGE>

Section 8     Vesting Complete Parts A and B

  Part A      Vesting Schedules.

              A Participant shall become Vested in his or her Individual Account
              attributable to Employer Contributions made pursuant to Section 7
              of the Adoption Agreement (and Forfeitures thereof) as follows
              (Choose one):

<TABLE>
<CAPTION>
-------------------------------------------------------------------------------------------------
     YEARS OF                             VESTED PERCENTAGE
 VESTING SERVICE     Option 1 [_]    Option 2 [X]    Option 3 [_]    Option 4 [_] (Complete _____)
-------------------------------------------------------------------------------------------------
<S>                  <C>            <C>             <C>              <C>
        1                      0%              0%             100%   ____%
        2                     20%              0%             100%   ____%
        3                     40%            100%             100%   ____% (not less than 20%)
        4                     60%            100%             100%   ____% (not less than 40%)
        5                     80%            100%             100%   ____% (not less than 60%)
        6                    100%            100%             100%   ____% (not less than 80%)
        7                    100%            100%             100%   ____% (not less than 100%)
-------------------------------------------------------------------------------------------------
            NOTE:  If left blank Option 3, 100% vesting will be deemed to be selected.

</TABLE>

  Part B      Vesting of Matching Contributions. A Participant's Individual
              Account derived from Matching Contributions made pursuant to
              Section 5 of this Adoption Agreement shall be (Choose one if
              Matching Contributions will be made):

              Option 1: [_]  100% Vested at all times
              Option 2: [X]  Vested in accordance with the vesting schedule
              selected in Section 8, Part A above.
              NOTE: If no selection is made, the selection shall be deemed to be
              Option 1

Section 9     Normal Retirement Age

              The Normal Retirement Age under the Plan is age 65 (not to exceed
              85).
              NOTE: If left blank, the Normal Retirement Age will be deemed to
              be age 59 1/2.

Section 10    Hours Required Complete Parts A and B and Part C, if applicable

  Part A      1000 Hours of Service (no more than 1,000) shall be required to
              constitute a Year of Vesting Service or a Year of Eligibility
              Service.

  Part B      500 Hours of Service (no more than 500 but less then the number
              specified in Section 10, Part A) must be exceeded to avoid a Break
              in Vesting Service or a Break in Eligibility Service.

  Part C      For purposes of determining Years of Eligibility Service and Years
              of Vesting Service, Employees shall be given credit for Hours of
              Service with the following predecessor employer(s) (Complete if
              applicable):    N/A
                          --------------------------------

<TABLE>
<S>              <C>                    <C>
  Section 11     Other Options          Answer "Yes" or "No" to each of the following
                                        questions by checking the appropriate box. If a box is not
                                        checked for a question, the answer will be deemed to
                                        be "No".
</TABLE>

<TABLE>
<S>                                                                                                             <C>
A.  Loans: Will loans to Participants pursuant to Section 6.08 of the Plan be permitted?                        [X] Yes  [_] No

B.  Participant Direction of Investments: Will Participants be permitted to direct the investment of their      [X] Yes  [_] No
    Individual Accounts, pursuant to Section 5.14 of the Plan?

C.  In-Service Withdrawals: Will Participants be permitted to make withdrawals during Service pursuant to       [_] Yes  [X] No
    Section 6.01(A)(3) of the Plan? Check here if such withdrawals will be permitted only on account of
    hardship. Note: If the Plan is being adopted to amend and replace a Prior Plan which permitted in-service
    withdrawals you must answer "Yes".

D.  Nondeductible Employee Contributions: Will Participants be permitted to make Nondeductible Employee         [_] Yes  [X] No
    Contributions pursuant to Section 11.304 of the Plan?

F.  Hardship Withdrawals: Will Participants be permitted to withdraw Elective Deferrals on account of           [_] Yes  [X] No
    hardship pursuant to Section 11.503 of the Plan?
</TABLE>

                                    Page 5
<PAGE>

Section 12    Joint and Survivor Annuity

  Part A      Retirement Equity Act Safe Harbor. Will the safe harbor provisions
              of Section 6.05(F} of the Plan apply (Choose one)?

              Option 1: [X]  Yes.
              Option 2: [_]  No.

              NOTE: You must select "No." if you are adopting this Plan as an
              amendment and restatement of a Prior Plan that was subject to the
              joint and survivor annuity requirements

     Part B   Survivor Annuity Percentage: Complete only if your answer in
              Section 12, Part A is "No." The survivor annuity portion of the
              Joint and Survivor Annuity shall be a percentage equal to ____%
              (at least 50%, but no more than 100%) of the amount paid to the
              Participant prior to his or her death.

Section 13    Additional Plans

              An Employer who has ever maintained or who later adopts any plan
              (including a welfare benefit fund, as defined in Section 419(e) of
              the Code, which provides post-retirement medical benefits
              allocated to separate accounts for key employees as defined in
              Section 419A(d)(3) of the Code or an individual medical account,
              as defined in Section 415(1)(2) of the Code) in addition to this
              Plan (other than a paired standardized regional prototype plan)
              may not rely on the notification letter issued by the National or
              District Office of the Internal Revenue Service as evidence that
              this Plan is qualified under Section 401 of the Code. If the
              Employer who adopts or maintains multiple plans or who may not
              rely on this notification letter pursuant to the preceding
              sentence wishes to obtain reliance that the Employer's plan(s) are
              qualified, application for a determination letter should be made
              to the appropriate Key District Director of Internal Revenue.

              This Adoption Agreement may be used only in conjunction with Basic
              Plan Document No. 01.

Section 14    Employer Signature        Important: read before signing

              I am an authorized representative of the Employer named above and
              I state the following:

              1.   I acknowledge that I have relied upon my own advisors
                   regarding the completion of this Adoption Agreement and the
                   legal tax implications of adopting this Plan.
              2.   I understand that my failure to properly complete this
                   Adoption Agreement may result in disqualification of the
                   Plan.
              3.   I understand that the Regional Prototype Sponsor will inform
                   me of any amendments made to the Plan and will notify me
                   should it discontinue or abandon the Plan.
              4.   I have received a copy of this Adoption Agreement and the
                   corresponding Basic Plan Document.

Signature for                                               Date Signed
Employer           /s/ Felix Lin
                   ----------------------              -------------------------
Type Name          Felix Lin
                   ----------------------

Section 15        Trustee or Custodian      Check and complete only one option

    Option A.     [X]Individual Trustee(s)

Signature         /s/ Felix Lin               Signature
                  ------------------------             -------------------------
Type Name             Felix Lin               Type Name
                  ------------------------             -------------------------

                                    Page 6
<PAGE>

   Option B.      [_] Financial Organization as Trustee or Custodian
                  Check One:  [_] Custodian,
                              [_] Trustee without full trust powers, or
                              [_] Trustee with full trust powers
                              NOTE: Custodian will be deemed selected if no box
                                    is checked.

Financial
Organization
             -------------------------------------------------------------------
Signature
             -------------------------------------------------------------------
Type Name
             -------------------------------------------------------------------

Section 16   Regional Prototype Sponsor

  Name of Regional Prototype Sponsor    Paychex Retirement Services
  Address                               72 Perinton Parkway
                                        Fairport, NY 14450
  Telephone Number                      [******]

Section 17   Limitation on Allocations

                                      More Than One Plan

             If you maintain or ever maintained another qualified plan (other
             than a paired standardized regional prototype plan) in which any
             Participant in this Plan is (or was) a Participant or could become
             a Participant, you must complete this section. You must also
             complete this section if you maintain a welfare benefit fund, as
             defined in Section 419(e) of the Code or an individual medical
             account, as defined in Section 415(l)(2) of the Code under which
             amounts are treated as annual additions with respect to any
             Participant in this Plan.

  Part A     If the Participant is covered under another qualified defined
             contribution plan maintained by the Employer, other than a regional
             prototype plan:

             1.  [_] The provisions of Section 3.05(B)(1) through 3.05(B)(6) of
             the Plan will apply as if the other plan were a regional prototype
             plan.

             2.  [_] Other method. (Provide the method under which the plans
             will limit total annual additions to the maximum permissible
             amount, and will properly reduce any excess amounts, in a manner
             that precludes Employer discretion.

                         N/A
             -------------------------------------------------------------------

     Part B  If the Participant is or has ever been a participant in a defined
             benefit plan maintained by the Employer, the Employer will provide
             below the language which will satisfy the 1.0 limitation of Section
             415(e) of the Code. Such language must preclude Employer
             discretion. (Complete)

             -------------------------------------------------------------------

     Part C  The limitation year is the following 12 consecutive month period:

             -------------------------------------------------------------------

Section 18   Elective Deferrals Based Exclusively on Bonuses

             May a contributing Participant base Elective Deferrals on cash
             bonuses that, at the Contributing Participant's election, may be
             contributed to the Plan or received by the Contributing Participant
             in cash (Choose one)?

             Option 1: [_]  Yes.
             Option 2: [X]  No.

             Note: Answer "yes" only if Elective Deferrals will be used
             exclusively on cash bonuses rather than payroll deductions. If no
             option is selected, Option 2 will automatically apply.

******  Certain information on this page had been omitted and filed separately
with the Securities and Exchange Commission.  Confidential treatment has been
requested with respect to the omitted portions.

                                    Page 7<PAGE>

                                                                    EXHIBIT 10.9

                                 AVANTGO, INC.

                            1997 STOCK OPTION PLAN

                         NOTICE OF STOCK OPTION GRANT
                         ----------------------------

Thomas Hunter

     You have been granted an option to purchase Common Stock ("Common Stock")
                                                                ------------
of AvantGo, Inc. (the "Company") as follows:
                       -------

     Board Approval Date:               September 21, 199

     Date of Grant (Later of Board
            Approval Date or
            Commencement of
            Employment/Consulting):     September 21, 1999

     Vesting Commencement Date:         August 16, 1999

     Exercise Price Per Share:          $1.75

     Total Number of Shares Granted:    293,500

     Total Exercise Price:              $513,625

     Type of Option:                      X   Incentive Stock Option ("ISO")
                                        -----                          ---
                                        _____ Nonstatutory Stock Option ("NSO")
                                                                          ---

     Term/Expiration Date:              ((ExpirationDate))

     Vesting Schedule:                  This Option may be exercised
                                        immediately, in whole or in part, and
                                        shall vest in accordance with the
                                        following schedule: 25% of the Shares
                                        subject to the Option shall vest on the
                                        twelve (12) month anniversary of the
                                        Vesting Commencement Date and 1/48 of
                                        the total number of Shares subject to
                                        the Option shall vest on the 16th of
                                        each month thereafter.
<PAGE>

     Termination Period:                This Option may be exercised for 45 days
                                        after termination of employment or
                                        consulting relationship except as set
                                        out in Sections 6 and 7 of the Stock
                                        Option Agreement (but in no event later
                                        than the Expiration Date).

     By your signature and the signature of the Company's representative below,
you and the Company agree that this Option is granted under and governed by the
terms and conditions of the 1997 Stock Option Plan and the Stock Option
Agreement, both of which are attached and made a part of this document.

Thomas Hunter:                          AvantGo, Inc.:

/s/ Thomas Hunter                       By: /s/ Linus Upson
-------------------------------             ---------------------------------
Signature

Thomas Hunter                           Linus Upson, President
-------------------------------         -------------------------------------
Print Name                              Print Name and Title

                                      -2-

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