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                                                                    Exhibit 10.1
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                         [Logo of Silicon Valley Bank]

                              SILICON VALLEY BANK
                               3003 TASMAN DRIVE
                             SANTA CLARA, CA. 95054
                      (408) 654-1000 - FAX (408) 980-6410

                     ACCOUNTS RECEIVABLE PURCHASE AGREEMENT

     This ACCOUNTS RECEIVABLE PURCHASE AGREEMENT, dated AUGUST 16, 2001 (the
"Agreement"), is entered into between SILICON VALLEY BANK ("Buyer") and GENSYM
CORPORATION, a Delaware corporation ("Seller"), with reference to that certain
Accounts Receivable Financing Agreement dated March 28, 2001 (as amended, the
"Existing Agreement").  The Existing Agreement and all related documents,
instruments and agreements are referred to collectively in this Amendment as the
"Loan Documents".  Capitalized terms used in this Agreement, which are not
defined shall have the meanings set forth in the Existing Agreement.

The Parties agree, as follows:

     Seller acknowledges that the present unpaid principal balance of the
Seller's indebtedness, liabilities and obligations to Buyer under the Loan
Documents, including interest accrued through 8/16/01 if $0 (the "Financed
Receivable Balance"), and that said sum is due and owing without any defense,
offset, or counterclaim of any kind.

     Effective immediately, the Financed Receivable Balance shall be converted
to Purchased Receivables, as defined in this Agreement, which Buyer in its sole
discretion accepts to purchase under Section 2.  This Agreement shall replace
all financial accommodations under the Loan Documents, and as of this date,
Buyer shall not be obligated to provide any further financial accommodations
under any of the Loan Documents.

1.  DEFINITIONS.  When used herein, the following terms shall have the
following meanings.

     "Account Balance" shall mean, on any given day, the gross amount of all
Purchased Receivables unpaid on that day.

     "Account Debtor" shall have the meaning set forth in the California Uniform
Commercial Code and shall include any person liable on any Purchased Receivable,
including without limitation, any guarantor of the Purchased Receivable and any
issuer of a letter of credit or banker's acceptance.

     "Adjustments" shall mean all discounts, allowances, returns, disputes,
counterclaims, offsets, defenses, rights of recoupment, rights of return,
warranty claims, or short payments, asserted by or on behalf of any Account
Debtor with respect to any Purchased Receivable.
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     "Administrative Fee" shall have the meaning as set forth in Section 3.3
hereof.

     "Advance" shall have the meaning set forth in Section 2.2 hereof.

     "Collateral" shall have the meaning set forth in Section 8 hereof.

     "Collections" shall mean all good funds received by Buyer from or on behalf
of an Account Debtor with respect to Purchased Receivables.

     "Compliance Certificate" shall mean a certificate, in a form provided by
Buyer to Seller, which contains the certification of the chief financial officer
of Seller that, among other things, the representations and warranties set forth
in this Agreement are true and correct as of the date such certificate is
delivered.

     "Event of Default" shall have the meaning set forth in Section 9 hereof.

     "Facility Fee" shall have the meaning set forth in Section 3.6 hereof.

     "Finance Charges" shall have the meaning set forth in Section 3.2 hereof.

     "Invoice Transmittal" shall mean a writing signed by an authorized
representative of Seller which accurately identifies the receivables which
Buyer, at its election, may purchase, and includes for each such receivable the
correct amount owed by the Account Debtor, the name and address of the Account
Debtor, the invoice number, the invoice date and the account code.

     "Obligations" shall mean all advances, financial accommodations,
liabilities, obligations, covenants and duties owing, arising, due or payable by
Seller to Buyer of any kind or nature, present or future, arising under or in
connection with this Agreement or under any other document, instrument or
agreement, whether or not evidenced by any note, guarantee or other instrument,
whether arising on account or by overdraft, whether direct or indirect
(including those acquired by assignment) absolute or contingent, primary or
secondary, due or to become due, now owing or hereafter arising, and however
acquired; including, without limitation, all Advances, Finance Charges,
Administrative Fees, interest, Repurchase Amounts, fees, expenses, professional
fees and attorneys' fees and any other sums chargeable to Seller hereunder or
otherwise.

     "Purchased Receivables" shall mean all those accounts, receivables, chattel
paper, instruments, contract rights, documents, general intangibles, letters of
credit, drafts, bankers acceptances, and rights to payment, and all proceeds
thereof (all of the foregoing being referred to as "receivables"), arising out
of the invoices and other agreements identified on or delivered with any Invoice
Transmittal delivered by Seller to Buyer which Buyer elects to purchase and for
which Buyer makes an Advance.

     "Refund" shall have the meaning set forth in Section 3.5 hereof.

     "Reserve" shall have the meaning set forth in Section 2.4 hereof.

     "Repurchase Amount" shall have the meaning set forth in Section 4.2 hereof.


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     "Reconciliation Date" shall mean the last calendar day of each
Reconciliation Period.

     "Reconciliation Period" shall mean each calendar month of every year.

2.  PURCHASE AND SALE OF RECEIVABLES.

2.1  OFFER TO SELL RECEIVABLES.  During the term hereof, and provided that there
does not then exist any Event of Default or any event that with notice, lapse of
time or otherwise would constitute an Event of Default, Seller may request that
Buyer purchase receivables and Buyer may, in its sole discretion, elect to
purchase receivables.  Seller shall deliver to Buyer an Invoice Transmittal with
respect to any receivable for which a request for purchase is made.  An
authorized representative of Seller shall sign each Invoice Transmittal
delivered to Buyer.  Buyer shall be entitled to rely on all the information
provided by Seller to Buyer on or with the Invoice Transmittal and to rely on
the signature on any Invoice Transmittal as an authorized signature of Seller.

2.2  ACCEPTANCE OF RECEIVABLES.  Buyer shall have no obligation to purchase any
receivable listed on an Invoice Transmittal.  Buyer may exercise its sole
discretion in approving the credit of each Account Debtor before buying any
receivable.  Upon acceptance by Buyer of all or any of the receivables described
on any Invoice Transmittal, Buyer shall pay to Seller 80(%) percent of the face
amount of each receivable Buyer desires to purchase, net of deferred revenue and
offsets related to each specific Account Debtor.  Such payment shall be the
"Advance" with respect to such receivable.  Buyer may, from time to time, in its
sole discretion, change the percentage of the Advance.  Upon Buyer's acceptance
of the receivable and payment to Seller of the Advance, the receivable shall
become a "Purchased Receivable."  It shall be a condition to each Advance that
(i) all of the representations and warranties set forth in Section 6 of this
Agreement be true and correct on and as of the date of the related Invoice
Transmittal and on and as of the date of such Advance as though made at and as
of each such date, and (ii) no Event of Default or any event or condition that
with notice, lapse of time or otherwise would constitute an Event of Default
shall have occurred and be continuing, or would result from such Advance.
Notwithstanding the foregoing, in no event shall the aggregate amount of all
Purchased Receivables outstanding at any time exceed TWO MILLION FIVE HUNDRED
THOUSAND DOLLARS ($2,500,000.00).

2.3  EFFECTIVENESS OF SALE TO BUYER.  Effective upon Buyer's payment of an
Advance, and for and in consideration therefor and in consideration of the
covenants of this Agreement, Seller hereby absolutely sells, transfers and
assigns to Buyer, all of Seller's right, title and interest in and to each
Purchased Receivable and all monies due or which may become due on or with
respect to such Purchased Receivable.  Buyer shall be the absolute owner of each
Purchased Receivable.  Buyer shall have, with respect to any goods related to
the Purchased Receivable, all the rights and remedies of an unpaid seller under
the California Uniform Commercial Code and other applicable law, including the
rights of replevin, claim and delivery, reclamation and stoppage in transit.

2.4  ESTABLISHMENT OF A RESERVE.  Upon the purchase by Buyer of each Purchased
Receivable, Buyer shall establish a reserve.  The reserve shall be the amount by
which the face amount of the Purchased Receivable exceeds the Advance on that
Purchased Receivable (the


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"Reserve"); provided, the Reserve with respect to all Purchased Receivables
outstanding at any one time shall be an amount not less than 20 (%) percent of
the Account Balance at that time and may be set at a higher percentage at
Buyer's sole discretion. The reserve shall be a book balance maintained on the
records of Buyer and shall not be a segregated fund.

3.  COLLECTIONS, CHARGES AND REMITTANCES.

3.1  COLLECTIONS.  Upon receipt by Buyer of Collections, Buyer shall promptly
credit such Collections to Seller's Account Balance on a daily basis; provided,
that if Seller is in default under this Agreement, Buyer shall apply all
Collections to Seller's Obligations hereunder in such order and manner as Buyer
may determine.  If an item of collection is not honored or Buyer does not
receive good funds for any reason, the amount shall be included in the Account
Balance as if the Collections had not been received and Finance Charges under
Section 3.2 shall accrue thereon.

3.2  FINANCE CHARGES.  On each Reconciliation Date Seller shall pay to Buyer a
finance charge in an amount equal to 2.00 (%) percent per month of the average
daily Account Balance outstanding during the applicable Reconciliation Period
(the "Finance Charges").  Buyer shall deduct the accrued Finance Charges from
the Reserve as set forth in Section 3.5 below.

3.3  ADMINISTRATIVE FEE.  On each Reconciliation Date Seller shall pay to Buyer
an Administrative Fee equal to 1.00 (%) percent of the face amount of each
Purchased Receivable first purchased during that Reconciliation Period (the
"Administrative Fee").  Buyer shall deduct the Administrative Fee from the
Reserve as set forth in Section 3.5 below.

3.4  ACCOUNTING.  Buyer shall prepare and send to Seller after the close of
business for each Reconciliation Period, an accounting of the transactions for
that Reconciliation Period, including the amount of all Purchased Receivables,
all Collections, Adjustments, Finance Charges, and the Administrative Fee.  The
accounting shall be deemed correct and conclusive unless Seller makes written
objection to Buyer within thirty (30) days after the Buyer mails the accounting
to Seller.

3.5  REFUND TO SELLER.  Provided that there does not then exist an Event of
Default or any event or condition that with notice, lapse of time or otherwise
would constitute an Event of Default, Buyer shall refund to Seller by check
after the Reconciliation Date, the amount, if any, which Buyer owes to Seller at
the end of the Reconciliation Period according to the accounting prepared by
Buyer for that Reconciliation Period (the "Refund").  The Refund shall be an
amount equal to:

     (A)  (1)  The Reserve as of the beginning of that Reconciliation Period,
               PLUS

          (2)  the Reserve created for each Purchased Receivable purchased
               during that Reconciliation Period, MINUS

     (B)  The total for that Reconciliation Period of:

          (1)  the Administrative Fee;

          (2)  Finance Charges;

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          (3)  Adjustments;

          (4)  Repurchase Amounts, to the extent Buyer has agreed to accept
payment thereof by deduction from the Refund;

          (5)  the Reserve for the Account Balance as of the first day of the
following Reconciliation Period in the minimum percentage set forth in Section
2.4 hereof; and

          (6)  all amounts due, including professional fees and expenses, as set
forth in Section 12 for which oral or written demand has been made by Buyer to
Seller during that Reconciliation Period to the extent Buyer has agreed to
accept payment thereof by deduction from the Refund.

In the event the formula set forth in this Section 3.5 results in an amount due
to Buyer from Seller, Seller shall make such payment in the same manner as set
forth in Section 4.3 hereof for repurchases.  If the formula set forth in this
Section 3.5 results in an amount due to Seller from Buyer, Buyer shall make such
payment by check, subject to Buyer's rights under Section 4.3 and Buyer's rights
of offset and recoupment.

3.6  FACILITY FEE.  A fully earned, non-refundable facility fee of $15,000.00
shall be due upon execution of this Agreement.

4.  RECOURSE AND REPURCHASE OBLIGATIONS.

4.1  RECOURSE.  Buyer's acquisition of Purchased Receivables from Seller shall
be with full recourse against Seller.  In the event the Obligations exceed the
amount of Purchased Receivables and Collateral, Seller shall be liable for any
deficiency.

4.2  SELLER'S AGREEMENT TO REPURCHASE.  Seller agrees to pay to Buyer on demand,
the full face amount, or any unpaid portion, of any Purchased Receivable:

     (A)  which remains unpaid ninety (90) calendar days after the invoice
          date; or

     (B)  which is owned by any Account Debtor who has filed, or has had filed
          against it, any bankruptcy case, assignment for the benefit of
          creditors, receivership, or insolvency proceeding or who has become
          insolvent (as defined in the United States Bankruptcy Code) or who is
          generally not paying its debts as such debts become due; or

     (C)  with respect to which there has been any beach of warranty or
          representation set forth in Section 6 hereof or any breach of any
          covenant contained in this Agreement; or

     (D)  with respect to which the Account Debtor asserts any discount,
          allowance, return, dispute, counterclaim, offset, defense, right of
          recoupment, right of return, warranty claim, or short payment;

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together with all reasonable attorneys' and professional fees and expenses and
all court costs incurred by Buyer in collecting such Purchased Receivable and/or
enforcing its rights under, or collecting amounts owed by Seller in connection
with, this Agreement (collectively, the "Repurchase Amount").

4.3  SELLER'S PAYMENT OF THE REPURCHASE AMOUNT OR OTHER AMOUNTS DUE BUYER.  When
any Repurchase Amount or other amount owing to Buyer becomes due, Buyer shall
inform Seller of the manner of payment which may be any one or more of the
following in Buyer's sole discretion:  (a) in cash immediately upon demand
therefor; (b) by delivery of substitute invoices and an Invoice Transmittal
acceptable to Buyer which shall thereupon become Purchased Receivables; (c) by
adjustment to the Reserve pursuant to Section 3.5 hereof; (d) by deduction from
or offset against the Refund that would otherwise be due and payable to Seller;
(e) by deduction from or offset against the amount that otherwise would be
forwarded to Seller in respect of any further Advances that may be made by
Buyer; or (f) by any combination of the foregoing as Buyer may from time to time
choose.

4.4  SELLER'S AGREEMENT TO REPURCHASE ALL PURCHASED RECEIVABLES.  Upon and after
the occurrence of an Event of Default, Seller shall, upon Buyer's demand (or, in
the case of an Event of Default under Section 9(B), immediately without notice
or demand from Buyer) repurchase all the Purchased Receivable then outstanding,
or such portion thereof as Buyer may demand.  Such demand may, at Buyer's
option, include and Seller shall pay to Buyer immediately upon demand, cash in
an amount equal to the Advance with respect to each Purchased Receivable then
outstanding together with all accrued Finance Charges, Adjustments,
Administrative Fees, attorney's and professional fees, court costs and expenses
as provided for herein, and any other Obligations.  Upon receipt of payment in
full of the Obligations, Buyer shall immediately instruct Account Debtors to pay
Seller directly, and return to Seller any Refund due to Seller.  For the purpose
of calculating any Refund due under this Section only, the Reconciliation Date
shall be deemed to be the date Buyer receives payment in good funds of all the
Obligations as provided in this Section 4.4.

5.  POWER OF ATTORNEY.  Seller does hereby irrevocably appoint Buyer and its
successors and assigns as Seller's true and lawful attorney in fact, and hereby
authorizes Buyer, regardless of whether there has been an Event of Default, (a)
to sell, assign, transfer, pledge, compromise, or discharge the whole or any
part of the Purchased Receivables; (b) to demand, collect, receive, sue, and
give releases to any Account Debtor for the monies due or which may become due
upon or with respect to the Purchased Receivables and to compromise, prosecute,
or defend any action, claim, case or proceeding relating to the Purchased
Receivables, including the filing of a claim or the voting of such claims in any
bankruptcy case, all in Buyer's name or Seller's name, as Buyer may choose; (c)
to prepare, file and sign Seller's name on any notice, claim, assignment,
demand, draft, or notice of or satisfaction of lien or mechanics' lien or
similar document with respect to Purchased Receivables; (d) to notify all
Account Debtors with respect to the Purchased Receivables to pay Buyer directly;
(e) to receive, open, and dispose of all mail addressed to Seller for the
purpose of collecting the Purchased Receivables; (f) to endorse Seller's name on
any checks or other forms of payment on the Purchased Receivables; (g) to
execute on behalf of Seller any and all instruments, documents, financing
statements and the like to perfect Buyer's interests in the Purchased
Receivables and Collateral; and (h) to do all acts and things necessary or
expedient, in furtherance of any such purposes.  If Buyer receives a

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check or item which is payment for both a Purchased Receivable and another
receivable, the funds shall first be applied to the Purchased Receivable and, so
long as there does not exist an Event of Default or an event that with notice,
lapse of time or otherwise would constitute an Event of Default, the excess
shall be remitted to Seller. Upon the occurrence and continuation of an Event of
Default, all of the power of attorney rights granted by Seller to Buyer
hereunder shall be applicable with respect to all Purchased Receivables and all
Collateral.

6.  REPRESENTATIONS, WARRANTIES AND COVENANTS.

6.1  RECEIVABLES' WARRANTIES, REPRESENTATIONS AND COVENANTS.  To induce Buyer to
buy receivables and to renders its services to Seller, and with full knowledge
that the truth and accuracy of the following are being relied upon by the Buyer
in determining whether to accept receivables as Purchased Receivables, Seller
represents, warrants, covenants and agrees, with respect to each Invoice
Transmittal delivered to Buyer and each receivable described therein, that:

     (A)  Seller is the absolute owner of each receivable set forth in the
          Invoice Transmittal and has full legal right to sell, transfer and
          assign such receivables;

     (B)  The correct amount of each receivable is as set forth in the Invoice
          Transmittal and is not in dispute;

     (C)  The payment of each receivable is not contingent upon the fulfillment
          of any obligation or contract, past or future and any and all
          obligations required of the Seller have been fulfilled as of the date
          of the Invoice Transmittal;

     (D)  Each receivable set forth on the Invoice Transmittal is based on an
          actual sale and delivery of goods and/or services actually rendered,
          is presently due and owing to Seller, is not past due or in default,
          has not been previously sold, assigned, transferred, or pledged, and
          is free of any and all liens, security interests and encumbrances
          other than liens, security interests or encumbrances in favor of Buyer
          or any other division or affiliate of Silicon Valley Bank;

     (E)  There are no defenses, offsets, or counterclaims against any of the
          receivables, and no agreement has been made under which the Account
          Debtor may claim any deduction or discount, except as otherwise stated
          in the Invoice Transmittal;

     (F)  Each Purchased Receivable shall be the property of the Buyer and shall
          be collected by Buyer, but if for any reason it should be paid to
          Seller, Seller shall promptly notify Buyer of such payment, shall hold
          any checks, drafts, or monies so received in trust for the benefit of
          Buyer, and shall promptly transfer and deliver the same to the Buyer;

     (G)  Buyer shall have the right of endorsement, and also the right to
          require endorsement by Seller, on all payments received in connection
          with each Purchased Receivable and any proceeds of Collateral;

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     (H)  Seller, and to Seller's best knowledge, each Account Debtor set forth
          in the Invoice Transmittal, are and shall remain solvent as that term
          is defined in the United States Bankruptcy Code and the California
          Uniform Commercial Code, and no such Account Debtor has filed or had
          filed against it a voluntary or involuntary petition for relief under
          the United States Bankruptcy Code;

     (I)  Each Account Debtor named on the Invoice Transmittal will not object
          to the payment for, or the quality or the quantity of the subject
          matter of, the receivable and is liable for the amount set forth on
          the Invoice Transmittal;

     (J)  Each Account Debtor shall promptly be notified, after acceptance by
          Buyer, that the Purchased Receivable has been transferred to and is
          payable to Buyer, and Seller shall not take or permit any action to
          countermand such notification; and

     (K)  All receivables forwarded to and accepted by Buyer after the date
          hereof, and thereby becoming Purchased Receivables, shall comply with
          each and every one of the foregoing representations, warranties,
          covenants and agreements referred to above in this Section 6.1.

6.2  ADDITIONAL WARRANTIES, REPRESENTATIONS AND COVENANTS.  In addition to the
foregoing warranties, representations and covenants, to induce Buyer to buy
receivables and to render its services to Seller, Seller hereby represents,
warrants, covenants and agrees that:

     (A)  Seller will not assign, transfer, sell, or grant, or permit any lien
          or security interest in any Purchased Receivables or Collateral to or
          in favor of any other party, without Buyer's prior written consent;

     (B)  The Seller's name, form of organization, chief executive office, and
          the place where the records concerning all Purchased Receivables and
          Collateral are kept is set forth at the beginning of this Agreement.
          Collateral is located only at the location set forth in the beginning
          of this Agreement, or, if located at any additional location, as set
          forth on a schedule attached to this Agreement, and Seller will give
          Buyer at least thirty (30) days prior written notice if such name,
          organization, chief executive office or other locations of Collateral
          or records concerning Purchased Receivables or Collateral is changed
          or added and shall execute any documents necessary to perfect Buyer's
          interest in the Purchased Receivables and the Collateral;

     (C)  Seller shall (i) pay all of its normal gross payroll for employees,
          and all federal and state taxes, as and when due, including without
          limitation all payroll and withholding taxes and state sales taxes;
          (ii) deliver at any time and from time to time at Buyer's request,
          evidence satisfactory to Buyer that all such amounts have been paid to
          the proper taxing authorities; and (iii) if requested by Buyer, pay
          its payroll and related taxes through a bank or an independent payroll
          service acceptable to Buyer;

     (D)  Seller has not, as of the time Seller delivers to Buyer an Invoice
          Transmittal, or as of the time Seller accepts any Advance from Buyer,
          filed a voluntary petition for

<PAGE>

          relief under the United States Bankruptcy Code or had filed against it
          an involuntary petition for relief;

     (E)  If Seller owns, holds or has any interest in, any copyrights (whether
          registered, or unregistered), patents or trademarks, and licenses of
          any of the foregoing, such interest has been disclosed to Buyer and it
          specifically listed and identified on a schedule to this Agreement,
          and Seller shall immediately notify Buyer if Seller hereafter obtains
          any interest in any additional copyrights, patents, trademarks or
          licenses that are significant in value or are material to the conduct
          of its business;

     (F)  Seller shall provide Buyer with a Compliance Certificate (i) on a
          quarterly basis to be received by Buyer no later than the fifth
          calendar day following each calendar quarter, and; (ii) on a more
          frequent or other basis if and as requested by Buyer;

     (G)  Seller shall provide Buyer with a deferred revenue listing upon
          request; and

     (H)  On request by Buyer, Seller will promptly furnish any information
          Buyer may reasonably request to determine financial condition of
          Seller, including, but not limited to all of Seller's Obligations, and
          the condition of any of Seller's receivables which may include but are
          not limited to Purchased Receivables.

7.  ADJUSTMENTS.  In the event of a breach of any of the representations,
warranties, or covenants set forth in Section 6.1, or in the event any
Adjustment or dispute is asserted by any Account Debtor, Seller shall promptly
advise Buyer and shall, subject to the Buyer's approval, resolve such disputes
and advise Buyer of any adjustments.  Unless the disputed Purchased Receivable
is repurchased by Seller and the full Repurchase Amount is paid, Buyer shall
remain the absolute owner of any Purchased Receivable which is subject to
Adjustment or repurchase under Section 4.2 hereof, and any rejected, returned,
or recovered personal property, with the right to take possession thereof at any
time.  If such possession is not taken by Buyer, Seller is to resell it for
Buyer's account at Seller's expense with the proceeds made payable to Buyer.
While Seller retains possession of said returned goods, Seller shall segregate
said goods and mark them "property of Silicon Valley Bank."

8.  SECURITY INTEREST.  To secure the prompt payment and performance to Buyer
of all of the Obligations, Seller hereby grants to Buyer a continuing lien upon
and security interest in all of Seller's now existing or hereafter arising
rights and interest in the following, whether now owned or existing or hereafter
created, acquired, or arising, and wherever located (collectively, the
"Collateral"):

     (A)  All accounts, receivables, contract rights, chattel paper,
          instruments, documents, letters of credit, bankers acceptances,
          drafts, checks, cash, securities, and general intangibles (including,
          without limitation, all claims, causes of action, deposit accounts,
          guaranties, rights in and claims under insurance policies (including
          rights to premium refunds), rights to tax refunds, copyrights,
          patents, trademarks, rights in and under license agreements, and all
          other intellectual property);

<PAGE>

     (B)  All inventory, including Seller's rights to any returned or rejected
          goods, with respect to which Buyer shall have all the rights of any
          unpaid seller, including the rights of replevin, claim and delivery,
          reclamation, and stoppage in transit;

     (C)  All monies, refunds and other amounts due Seller, including, without
          limitation, amounts due Seller under this Agreement (including
          Seller's right of offset and recoupment):

     (D)  All equipment, machinery, furniture, furnishings, fixtures, tools,
          supplies and motor vehicles:

     (E)  All farm products, crops, timber, minerals and the like (including oil
          and gas);

     (F)  All accessions to, substitutions for, and replacements of, all of the
          foregoing;

     (G)  All books and records pertaining to all of the foregoing; and

     (H)  All proceeds of the foregoing, whether due to voluntary or involuntary
          disposition, including insurance proceeds.

     Seller is not authorized to sell, assign, transfer or otherwise convey any
Collateral without Buyer's prior written consent, except for the sale of
finished inventory in the Seller's usual course of business.  Seller agrees to
sign UCC financing statements, in a form acceptable to Buyer, and any other
instruments and documents requested by Buyer to evidence, perfect, or protect
the interests of Buyer in the Collateral.  Seller agrees to deliver to Buyer the
originals of all instruments, chattel paper and documents evidencing or related
to Purchased Receivables and Collateral.

9.  DEFAULT.  The occurrence of any one or more of the following shall
constitute an Event of Default hereunder.

     (A)  Seller fails to pay any amount owed to Buyer as and when due;

     (B)  There shall be commenced by or against Seller any voluntary or
          involuntary case under the United States Bankruptcy Code, or any
          assignment for the benefit of creditors, or appointment of a receiver
          or custodian for any of its assets;

     (C)  Seller shall become insolvent in that its debts are greater than the
          fair value of its assets, or Seller is generally not paying its debts
          as they become due or is left with unreasonably small capital;

     (D)  Any involuntary lien, garnishment, attachment or the like is issued
          against or attaches to the Purchased Receivables or any Collateral;

     (E)  Seller shall breach any covenant, agreement, warranty, or
          representation shall constitute an immediate default hereunder;

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     (F)  Seller is not in compliance with, or otherwise is in default under,
          any term of any document, instrument or agreement evidencing a debt,
          obligation or liability of any kind or character of Seller, now or
          hereafter existing, in favor of Buyer or any division or affiliate of
          Silicon Valley Bank, regardless of whether such debt, obligation or
          liability is direct or indirect, primary or secondary, joint, several
          or joint and several, or fixed or contingent, together with any and
          all renewals and extensions of such debts, obligations and
          liabilities, or any part thereof;

     (G)  An event of default shall occur under any guaranty executed by any
          guarantor of the Obligations of Seller to Buyer under this Agreement,
          or any material provision of any such guaranty shall for any reason
          cease to be valid or enforceable or any such guaranty shall be
          repudiated or terminated, including by operation of law;

     (H)  A default or event of default shall occur under any agreement between
          Seller and any creditor of Seller that has entered into a
          subordination agreement with Buyer;

     (I)  Any creditor that has entered into a subordination agreement with
          Buyer shall breach any of the terms of or not comply with such
          subordination agreement; or

     (J)  (i) There is a material adverse change in the business; operations; or
          condition (financial or otherwise) of the Seller, or (ii) there is a
          material impairment of the prospect of repayment of any portion of the
          Obligations or (iii) there is a material impairment of the value or
          priority of Buyer's security interests in the Collateral.

<PAGE>

10.  REMEDIES UPON DEFAULT.  Upon the occurrence of an Event of Default, (1)
without implying any obligation to buy receivables, Buyer may cease buying
receivables or extending any financial accommodations to Seller, (2) all or a
portion of the Obligations shall be, at the option of and upon demand by Buyer,
or with respect to an Event of Default described in Section 9(B), automatically
and without notice or demand, due and payable in full; and (3) Buyer shall have
and may exercise all the rights and remedies under this Agreement and under
applicable law, including the rights and remedies of a secured party under the
California Uniform Commercial Code, all the power of attorney rights described
in Section 5 with respect to all Collateral, and the right to collect, dispose
of, sell, lease, use, and realize upon all Purchased Receivables and all
Collateral in any commercial reasonable manner.  Seller and Buyer agree that any
notice of sale required to be given to Seller shall be deemed to be reasonable
if given five (5) days prior to the date on or after which the sale may be held.
In the event that the Obligations are accelerated hereunder, Seller shall
repurchase all of the Purchased Receivables as set forth in Section 4.4.

11.  ACCRUAL OF INTEREST.  If any amount owed by Seller hereunder is not paid
when due,  including, without limitation, amounts due under Section 3.5,
Repurchase Amounts, amounts due under Section 12, and any other Obligations,
such amounts shall bear interest at a per annum rate equal to the per annum rate
of the Finance Charges until the earlier of (i) payment in good funds or (ii)
entry of a final judgment thereof, at which time the principal amount of any
money judgment remaining unsatisfied shall accrue interest at the highest rates
allowed by applicable law.

12.  FEES, COSTS AND EXPENSES; INDEMNIFICATION.  The Seller will pay to Buyer
immediately upon demand all fees, costs and expenses (including fees of
attorneys and professionals and their costs and expenses) that Buyer incurs or
may from time to time impose in connection with any of the following: (a)
preparing, negotiating, administering, and enforcing this Agreement or any other
agreement executed in connection herewith, including any amendments, waivers or
consents in connection with any of the foregoing, (b) any litigation or dispute
(whether instituted by Buyer, Seller or any other person) in any way relating to
the Purchased Receivables, the Collateral, this Agreement or any other agreement
executed in connection herewith or therewith, (c) enforcing any rights against
Seller or any guarantor, or any Account Debtor, (d) protecting or enforcing its
interest in the Purchased Receivables or the Collateral, (e) collecting the
Purchased Receivables and the Obligations, and  (f) the representation of Buyer
in connection with any bankruptcy case or insolvency proceeding involving
Seller, any Purchased Receivable, the Collateral, any Account Debtor, or any
guarantor.  Seller shall indemnify and hold Buyer harmless from and against any
and all claims, actions, damages, costs, expenses, and liabilities of any nature
whatsoever arising in connection with any of the foregoing.

13.  SEVERABILITY, WAIVER, AND CHOICE OF LAW.  In the event that any provision
of this Agreement is deemed invalid by reason of law, this Agreement will be
construed as not containing such provision and the remainder of the Agreement
shall remain in full force and effect.  Buyer retains all of its rights, even if
it makes an Advance after an Event of Default.  If Buyer waives an Event of
Default, it may enforce a later Event of Default.  Any consent or waiver under,
or amendment of, this Agreement must be in writing.  Nothing contained herein,
or any action taken or not taken by Buyer at any time, shall be construed at any
time to be indicative of any obligation or willingness on the part of Buyer to
amend this Agreement or to grant to Seller any waivers or consents.  This
Agreement has been transmitted by Seller to Buyer

<PAGE>

at Buyer's office in the State of California and has been executed and accepted
by Buyer in the State of California. This Agreement shall be governed by and
interpreted in accordance with the internal laws of the State of California.

14.  ACCOUNT COLLECTION SERVICES.  Certain Account Debtors may require or
prefer that all of Seller's receivables be paid to the same address and/or
party, or Seller and Buyer may agree that all receivables with respect to
certain Account Debtors be paid to one party.  In such event Buyer and Seller
may agree that Buyer shall collect all receivables whether owned by Seller or
Buyer and (provided that there does not then exist an Event of Default or event
that with notice, lapse or time or otherwise would constitute an Event of
Default, and subject to Buyer's rights in the Collateral) Buyer agrees to remit
to Seller the amount of the receivables collections it receives with respect to
receivables other than Purchased Receivables.  It is understood and agreed by
Seller that this Section does not impose any affirmative duty on Buyer to do any
act other than to turn over such amounts.  All such receivables and collections
are Collateral and in the event of Seller's default hereunder, Buyer shall have
no duty to remit collections of Collateral and may apply such collections to the
obligations hereunder and Buyer shall have the rights of a secured party under
the California Uniform Commercial Code.

15.  NOTICES.  All notices shall be given to Buyer and Seller at the addresses
or faxes set forth on the first page of this Agreement and shall be deemed to
have been delivered and received: (a) if mailed, three (3) calendar days after
deposited in the United States mail, first class, postage pre-paid, (b) one (1)
calendar day after deposit with an overnight mail or messenger service; or (c)
on the same date of confirmed transmission if sent by hand delivery, telecopy,
telefax or telex.

16.  JURY TRIAL.  SELLER AND BUYER EACH HEREBY (a) WAIVE THEIR RESPECTIVE
RIGHTS TO A JURY TRIAL ON ANY CLAIM OR ACTION ARISING OUT OF OR IN CONNECTION
WITH THIS AGREEMENT, ANY RELATED AGREEMENTS, OR ANY OF THE TRANSACTIONS
CONTEMPLATED HEREBY OR THEREBY; (b) RECOGNIZE AND AGREE THAT THE FOREGOING
WAIVER CONSTITUTES A MATERIAL INDUCEMENT FOR IT TO ENTER INTO THIS AGREEMENT;
AND (c) REPRESENT AND WARRANT THAT IT HAS REVIEWED THIS WAIVER, HAS DETERMINED
FOR ITSELF THE NECESSITY TO REVIEW THE SAME WITH ITS LEGAL COUNSEL, AND
KNOWINGLY AND VOLUNTARILY WAIVES ALL RIGHTS TO A JURY TRIAL.

17.  TERM AND TERMINATION.  The term of this Agreement shall be for one (1)
year from the date hereof, and from year to year thereafter unless terminated in
writing by Buyer or Seller.  Seller and Buyer shall each have the right to
terminate this Agreement at any time.  Notwithstanding the foregoing, any
termination of this Agreement shall not affect Buyer's security interest in the
Collateral and Buyer's ownership of the Purchased Receivables, and this
Agreement shall continue to be effective, and Buyer's rights and remedies
hereunder shall survive such termination, until all transactions entered into
and Obligations incurred hereunder or in connection herewith have been completed
and satisfied in full.

18.  TITLES AND SECTION HEADINGS.  The titles and section headings used herein
are for convenience only and shall not be used in interpreting this Agreement.

<PAGE>

19.  OTHER AGREEMENTS.  The terms and provisions of this Agreement shall not
adversely affect the rights of Buyer or any other division or affiliate of
Silicon Valley Bank under any other document, instrument or agreement.  The
terms of such other documents, instruments and agreements shall remain in full
force and effect notwithstanding the execution of this Agreement.  In the event
of a conflict between any provision of this Agreement and any provision of any
other document, instrument or agreement between Seller on the one hand, and
Buyer or any other division or affiliate of Silicon Valley Bank on the other
hand, Buyer shall determine in its sole discretion which provision shall apply.
Seller acknowledges specifically that any security agreements, liens and/or
security interests currently securing payment of any obligations of Seller owing
to Buyer or any other division or affiliate of Silicon Valley Bank also secure
Seller's obligations under this Agreement, and are valid and subsisting and are
not adversely affected by execution of this Agreement.  Seller further
acknowledges that (a) any collateral under other outstanding security agreements
or other documents between Seller and Buyer or any other division or affiliate
of Silicon Valley Bank secures the obligations of Seller under this Agreement
and (b) a default by Seller under this Agreement constitutes a default under
other outstanding agreements between Seller and Buyer or any other division or
affiliate of Silicon Valley Bank.

     IN WITNESS WHEREOF, Seller and Buyer have executed this Agreement on the
day and year above written.

SELLER:  GENSYM CORPORATION


By /s/ Lowell B. Hawkinson
 ----------------------------------------

Title  Chairman, President and CEO
    -------------------------------------


BUYER: SILICON VALLEY BANK


By [Illegible]
 ----------------------------------------

Title  Senior Vice President

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