Document:

<PAGE>

                                                                   EXHIBIT 10.9

                   OPTION TO PURCHASE COMMON STOCK AGREEMENT
                   -----------------------------------------

     THIS OPTION TO PURCHASE COMMON STOCK AGREEMENT (the "Option Agreement") is
made as of August 15, 1997 between James Hebert ("Optionor") and HAHT Software,
Inc., a North Carolina Corporation ("Company").

     THE PARTIES AGREE AS FOLLOWS:

     1.   Grant of Option; Term.
          ---------------------

          1.1  Consideration; Grant of Option; Exercise Price.  In consideration
               ----------------------------------------------
of the payment of $100, receipt of which is hereby acknowledged, Optionor hereby
sells and grants to Company (i) an option (the "Option") to purchase from
Optionor all or any part of 1,365,625 shares (the "Option Shares") of the Common
Stock (the "Option Stock") of the Company at an exercise price (the "Exercise
Price") of $0.40 per Option Share.

          1.2  Term.  This Option shall terminate at 5 p.m. Pacific Time, on
               ----
August 15, 2007 (the "Expiration Date").

          1.3  Voting Rights.  The Optionor hereby grants the Company and its
               -------------
assigns under Section 6.1.2 hereof an irrevocable proxy pursuant to Section 55-
7-22 of the North Carolina Business Corporation Act, which proxy is coupled with
an interest, to attend and vote at any and all meetings of the shareholders of
Company, and any adjournments thereof, held on or after the effective date of
this Option Agreement and prior to the termination of this Option Agreement and
to execute any and all written consents of shareholders of Company executed on
or after the effective date of this Option Agreement and prior to the
termination of this Option Agreement, with the same effect as if the Optionor
had personally attended or had personally voted the Option Shares or had
personally signed the written consent.  In the event that the proxy granted
under this Section 1.3 shall be deemed unenforceable under applicable law,
Optionor hereby agrees to vote the Option Shares as directed by the Company or
its assigns under Section 6.1.2 on all matters on which such Option Shares may
be voted by the Optionor.

          1.4  Changes in Capital Structure.  If the Option Stock is changed by
               ----------------------------
reason of a stock split, reverse stock split, stock dividend or
recapitalization, or converted or exchanged for other securities as a result of
a merger or reorganization of the Company, the number of Option Shares, the
class of securities and the Exercise Price shall be appropriately adjusted to
preserve the benefits to the parties under this Option Agreement.

     2.   Exercise of Option.
          ------------------

          2.1  Partial Exercise and Time of Exercise.  The Option may be
               -------------------------------------
exercised in whole or in part, from time to time, on or prior to the Expiration
Date.

          2.2  Manner of Exercise.  Company may exercise the Option, or any part
               ------------------
of the Option, by delivery on or before the Expiration Date of written notice
(the "Option Exercise Notice") to Optionor and Escrowholder (as such term is
defined in Section 4.1 hereof) with a copy to Company, specifying the number of
Option Shares with respect to which the Option is
<PAGE>

exercised and the effective date of the exercise (the "Option Exercise Date"),
which shall be ten days after the date on which Optionor is deemed to receive
the Option Exercise Notice. The date for payment of the Purchase Price (as
defined below, the "Payment Date") shall be the Option Exercise Date.

          2.3  Payment of Exercise Price.  The purchase price payable upon
               -------------------------
exercise of the Option (the "Purchase Price") shall equal the product obtained
by multiplying (A) the number of Option Shares as to which the Option is
exercised, times (B) the Exercise Price. Company shall pay for the Option Shares
then being acquired by delivering a check or cash to Optionor on the Payment
Date.

     3.   Distributions, Adjustments, and Rights to Purchase Shares.
          ---------------------------------------------------------

          3.1  Distributions and Additional Securities.  If any Distribution (as
               ---------------------------------------
hereinafter defined) of securities issued in connection with a change described
in Section 1.4 shall be received by Optionor, Optionor shall, within five days
of receipt, deliver the cash, certificates or other instruments evidencing title
to such Distribution or other securities, together with appropriate instruments
of transfer, to Escrowholder to be held in the Escrow.  Any Distribution shall
become a part of the Option Share to which it relates, shall be transferred to
Company without extra cost upon the exercise of the Option.  A "Distribution"
means any property receivable by Optionor as owner of any Option Share, or as
owner of any Distribution, and shall include, without limitation, dividends,
whether in cash or other property, such as securities or contract rights, cash
securities or other property arising from a reorganization, recapitalization,
stock split or merger of the Company or the Company of any security that is a
Distribution, or otherwise; provided, however, that (i) cash dividends in any
calendar year aggregating less than 5% of the Exercise Price shall be the sole
property of Optionor and shall not be deemed a Distribution, and (ii) securities
received in connection with a change contemplated by Section 1.4 for which
appropriate adjustments are made pursuant thereto shall not be deemed a
Distribution.

     4.   Escrow.
          ------

          4.1  Creation of Escrow.  To assure Optionor's ability to perform
               ------------------
Optionor's obligations under this Option Agreement, Optionor shall deliver the
stock certificate(s) listed on Schedule 4.1, together with seven stock
assignments in blank duly executed by Optionor, to Linda Markus Daniels, Edmund
D. Milam or such other third party as may be mutually agreed upon by Company and
the Optionor (the "Escrowholder") within thirty (30) days after the date of this
Option Agreement, such documents to be held in escrow (the "Escrow") pursuant to
the terms of this Section 4.  Fees of the Escrowholder shall be paid by the
Company.

          4.2  Duties of Escrowholder Upon Exercise of Option.  If, prior to the
               ----------------------------------------------
Expiration Date, Escrowholder is given an Option Exercise Notice and does not,
within ten days thereafter, receive a Cancellation Notice, Escrowholder shall,
on the Payment Date, close the transaction contemplated by the notice on the
Option Exercise Date, by (i) dating the stock assignment(s) necessary for the
transfer in question, (ii) filling in the number of shares being
<PAGE>

transferred, and (iii) delivering to Company the assignment(s), together with
the certificate(s) for the number of Option Shares being transferred, possession
of the Distributions with respect to such Option Shares and all instruments
necessary to transfer title to such Distributions from Optionor to Company,
against the simultaneous delivery to Optionor of the Purchase Price.

          4.3  Term of Escrow.  The Escrow shall continue until Company has
               --------------
certified to Escrowholder that the Option has expired or the Option has been
exercised in full.  Company agrees to advise Escrowholder from time to time,
upon request, of the status of the obligations of Optionor under this Option
Agreement.

          4.4  Attorney-In-Fact; Additional Stock Assignments.  Optionor hereby
               ----------------------------------------------
irrevocably constitutes and appoints Escrowholder as Optionor's attorney-in-fact
and agent for the term of this Escrow to execute, with respect to the securities
and other property that are deposited with Escrowholder hereunder, all documents
necessary or appropriate to make any such securities negotiable and complete any
transaction contemplated herein.  Optionor shall deliver to Escrowholder from
time to time such number of stock assignments separate from certificate and
other instruments of transfer duly executed by Optionor as may be requested by
Company or Escrowholder.

          4.5  Return of Property.  If, at the time of termination of this
               ------------------
Escrow, Escrowholder has in his possession any documents, securities, or other
property belonging to Optionor, he shall deliver all of same to Optionor and
shall be discharged of all further obligations hereunder.

          4.6  Duties.  Escrowholder shall carry out Escrowholder's duties
               ------
hereunder to the best of Escrowholder's ability and shall be liable only for
gross negligence or willful misconduct.  Escrowholder's duties hereunder may be
altered, amended, modified or revoked only by a written instrument signed by
Company, Optionor and Escrowholder.

          4.7  Obligations.  Escrowholder shall be obligated only for the
               -----------
performance of such duties as are specifically set forth herein and may rely and
shall be protected in relying or refraining from acting on any instrument
reasonably believed by Escrowholder to be genuine and to have been signed or
presented by the proper party or parties.  Escrowholder shall not be personally
liable for any act Escrowholder may do or omit to do hereunder as Escrowholder
or as attorney-in-fact for Optionor while acting in good faith and in the
exercise of Escrowholder's own judgment, and any act done or omitted by
Escrowholder pursuant to the advice of Escrowholder's own attorneys shall be
conclusive evidence of such good faith.

          4.8  Bankruptcy.  Bankruptcy, insolvency, dissolution or absence of
               ----------
any party hereto shall not affect Escrowholder's performance hereunder.

          4.9  Termination of Duties; Successor.  Escrowholder's
               --------------------------------
responsibilities as Escrowholder hereunder shall terminate if (i) Escrowholder
shall resign by thirty days written notice to Optionor and Company, (ii)
Optionor and Company jointly agree as to Escrowholder's termination and appoint
Escrowholder's successor, or (iii) Escrowholder dies or is disabled.  In the
event of Escrowholder's termination as Escrowholder by resignation, death or
disability,
<PAGE>

Company shall appoint a successor. Upon receipt of notice of appointment of a
successor, all documents, shares and other property then in Escrowholder's
possession pursuant to this Option Agreement shall be delivered to such
successor.

          4.10  Further Instruments.  If Escrowholder reasonably requires other
                -------------------
or further instruments in connection with this Option Agreement or obligations
in respect hereto, the necessary parties hereto shall join in furnishing such
instruments.

     5.   Representations, Warranties and Covenants of Optionor.
          -----------------------------------------------------

          5.1   Ownership of Option Shares; No Conflicts. Optionor represents
                ----------------------------------------
and warrants as of this date, and covenants, for the period beginning on this
date and ending on the Expiration Date, that (i) Optionor has and will have the
right to transfer to Company all or any part of the Option Shares and
Distributions, free and clear of any lien, claim, encumbrance or restriction of
any type or nature whatsoever (other than restrictions on resale that may arise
under applicable federal and state securities laws); (ii) the Option Shares are
not, and the Option Shares and Distributions will not be, subject to any right
of first refusal, right of repurchase or any similar right granted to, or
retained by, the Company, any shareholder of the Company or any other person
that has not been waived; and (iii) there is no provision of any existing
agreement, and Optionor will not enter into an agreement by which the Optionor
is or would be bound (or to which the Optionor is or would become subject), that
conflicts or would conflict with this Agreement or the performance of Optionor's
obligations under this Option Agreement.

          5.2   Further Assurances. Upon the reasonable request of Escrowholder
                ------------------
or Company, Optionor will prepare, execute and deliver any further instruments
and do any further acts that may be necessary to carry out more effectively the
purposes of this Option Agreement, including, if necessary, the preparation and
execution of applications to the California Department of Corporations.

     6.   Miscellaneous.
          -------------

          6.1   Assignment.
                ----------

                6.1.1   By Optionor.  Except as provided herein Optionor may
                        -----------
not sell, assign, transfer, hypothecate, pledge or otherwise encumber, in any
manner, prior to the Expiration Date, this Option Agreement or any of the Option
Shares or Distributions. Any attempt to sell, assign, transfer, hypothecate,
pledge or otherwise encumber this Option Agreement, any interest therein or any
such shares or Distributions and any levy of execution, attachment, or similar
process on the Option Shares or such Distributions shall be null and void.
Subject to the foregoing, this Option shall be binding on and inure to the
benefit of the heirs, executors, and personal representatives of Optionor.

                6.1.2   By Company. Company may assign its right, title and
                        ----------
interest in this Option Agreement, in whole or in part, subject to the receipt
of all necessary waivers under the Shareholders' Agreement dated July 1, 1995 by
and among the Company and the Stockholders (as defined therein), effective upon
notice to Optionor and Escrowholder.
<PAGE>

Following such assignment, this Option Agreement shall be binding upon and inure
to the benefit of any such assignee. Such assignment shall be conditioned on
compliance with any applicable state and federal securities laws.

                6.1.3.  Quiet Enjoyment; Nondisclosure.  Company agrees that any
                        ------------------------------
assignment to any third party will be conditioned on such third party agreeing
that (i) such party will not contact Optionor regarding the Optionor's former
employment or affiliation with Company, except to the extent necessary to carry
out the provisions of this Option Agreement and (ii) such party shall not make
any public statement regarding the Optionor without the Optionor's prior
consent.

          6.2   Amendment.  Except as provided in Section 4.6 with respect to
                ---------
Escrowholder's duties, this Option Agreement may only be amended by a writing
signed by Optionor and Company.

          6.3   Costs of Enforcement.  If any party to this Option Agreement
                --------------------
seeks to enforce its rights under this Option Agreement by legal proceedings or
otherwise, the non-prevailing party shall pay all costs and expenses incurred by
the prevailing party, including, without limitation, all reasonable attorneys'
fees.

          6.4   Notices.  All notices and other communications under this Option
                -------
Agreement shall be in writing, and shall be deemed to have been duly given on
the date of delivery if delivered personally, or by telegram, telex or confirmed
facsimile, or on the next day after dispatch via overnight messenger or courier,
or on the second day after mailing if mailed to the party to whom notice is to
be given by first class mail, registered or certified, postage prepaid,  and
addressed as follows (until any such address is changed by notice duly given):

          If to Optionor:               James Hebert
                                        905 Englewood
                                        Durham, N.C. 27701

          If to Company:                HAHT Software, Inc.
                                        4200 Six Forks Road
                                        Raleigh, N.C. 27609
                                        Attention: President

          If to Company:                Corporate Secretary
                                        HAHT Software, Inc.
                                        4200 Six Forks Road
                                        Raleigh, N.C. 27609

          If to Escrowholder:           ___________________
                                        ___________________
                                        ___________________
                                        ___________________
<PAGE>

     IN WITNESS WHEREOF, the parties hereto have duly executed this Option to
Purchase Stock Agreement as of the date first written above.

          OPTIONOR:                         /s/ James W. Hebert
                                            ------------------------------
                                            James Hebert

COMPANY:                                    HAHT Software, Inc.

                                            By: /s/ J Nick Riehle
                                               ---------------------------
                                               Name: J Nick Riehle
                                               Title: CFO

     Consent by Escrowholder.  The undersigned agrees to act as escrowholder
     -----------------------
under this Option to Purchase Stock Agreement pursuant to Section 4 and agrees
to be bound only by such Section 4 and Section 5.

                                            By:___________________________
                                               Name:

<PAGE>

                                 Schedule 4.1

<TABLE>
<CAPTION>
                                            Type                        Number
                                            of         Certificate      of
Company                    Record Holder    Stock      Number           Shares
----------------------    ---------------  -------   --------------    --------
<S>                        <C>             <C>       <C>               <C>
HAHT Software, Inc.        James Hebert     Common                      1,365,625
</TABLE><PAGE>

                                                                   EXHIBIT 10.10

                           OPTION TRANSFER AGREEMENT

     THIS OPTION TRANSFER AGREEMENT (the "Agreement") is made as of September
__, 1997 by and among HAHT Software, Inc., a North Carolina Corporation
("Company") and the investors listed on Schedule I attached hereto (the
"Transferees").

                                   RECITALS

     WHEREAS, pursuant to the Option to Purchase Common Stock Agreement (the
"Option Agreement") dated August 15, 1997 between James Hebert ("Optionor") and
the Company, a copy of which is attached hereto as Exhibit A,  the Optionor sold
and granted to the Company (i) an option (the "Option") to purchase from
Optionor up to 1,365,625 shares (the "Option Shares") of the Common Stock (the
"Option Stock") of the Company then held by Optionor at an exercise price (the
"Exercise Price") of $0.40 per Option Share.

     WHEREAS, pursuant to Section 6.1.2 of the Option Agreement, the Company may
assign its right, title and interest in the Option Agreement, in whole or in
part, effective upon notice to Optionor and Escrowholder.

     WHEREAS, in connection with the Transferees participation in the Series D
Preferred Stock Financing of the Company, the Company desires to transfer and
assign the Option to the Transferees and to assign the rights associated with
the Option to the Transferees and each Transferee desires to accept such
transfer and assignment and be bound by the terms of the Option Agreement.

     NOW, THEREFORE, for good and valuable consideration, the receipt of which
is hereby acknowledged, the Company and the undersigned Transferees hereby agree
as follows:

     1.   Transfer.   Subject to the terms and conditions of this Agreement and
          --------
the Option Agreement, the Transferor hereby transfers the Option to the
Transferees, and agrees that from and after the date of this Agreement each
Transferee shall have the right to exercise the Option with respect to the
number of Option Shares set forth opposite such Transferee's name on Schedule I
(as attached hereto).

     2.   Representations and Warranties of the Transferees.  In connection with
          -------------------------------------------------
the transfer of the Option to the Transferees, each Transferee represents and
warrants to the Company that:

          (a)  Authorization.  This Agreement and the Agreement to be Bound,
               -------------
when executed and delivered by the Transferee, will constitute valid and legally
binding obligations of the Transferee, enforceable in accordance with their
terms, except as limited by applicable bankruptcy, insolvency, reorganization,
moratorium, fraudulent conveyance, and any other laws of general application
affecting enforcement of creditors' rights generally, and as limited by laws
relating to the availability of a specific performance, injunctive relief, as
other equitable remedies.
<PAGE>

          (b)  Purchase Entirely for Own Account.  This Agreement is made with
               ---------------------------------
the Transferee in reliance upon the Transferee's representation to the Company,
which by the Transferee's execution of this Agreement, the Transferee hereby
confirms, that the Option (or the Option Shares issuable upon exercise thereof)
to be acquired by the Transferee will be acquired for investment for the
Transferee's own account, not as a nominee or agent, and not with a view to the
resale or distribution of any part thereof, and that the Transferee has no
present intention of selling, granting any participation in, or otherwise
distributing the same. By executing this Agreement, the Transferee further
represents that the Transferee does not presently have any contract,
undertaking, agreement or arrangement with any person to sell, transfer or grant
participations to such person or to any third person, with respect to any of the
Option (or the Option Shares issuable upon exercise thereof). The Transferee
represents that it has full power and authority to enter into this Agreement.
The Transferee has not been formed for the specific purpose of acquiring the
Option (or the Option Shares issuable upon exercise thereof).

          (c)  Disclosure of Information.  The Transferee has had an opportunity
               -------------------------
to discuss the Company's business, management, financial affairs and the terms
and conditions of the offering of the Option with the Company's management and
has had an opportunity to review the Company's facilities. The Transferee
understands that such discussions, as well as the written information issued by
the Company, were intended to describe the aspects of the Company's business
which it believes to be material.

          (4)  Restricted Securities.  The Transferee understands that the
               ---------------------
Option (and the Option Shares issuable upon exercise thereof) has not been, and
will not be, registered under the Securities Act of 1933, as amended (the
"Securities Act"), by reason of a specific exemption from the registration
provisions of the Securities Act which depends upon, among other things, the
bona fide nature of the investment intent and the accuracy of the Transferee's
representations as expressed herein. The Transferee understands that the Option
(and the Option Shares issuable upon exercise thereof) are characterized as
"restricted securities" under the federal securities laws inasmuch as they are
being acquired from the Company in a transaction not involving a public offering
and that under such laws and applicable regulations such Option (and the Option
Shares issuable upon exercise thereof) may be resold without registration under
the Securities Act only in certain limited circumstances. The Transferee
acknowledges that the Option (and the Option Shares issuable upon exercise
thereof) must be held indefinitely unless subsequently registered under the
Securities Act or an exemption from such registration is available. The
Transferee is aware of the provisions of Rule 144 promulgated under the
Securities Act which permit limited resale of shares purchased in a private
placement subject to the satisfaction of certain conditions, including, among
other things, the existence of a public market for the shares, the availability
of certain current public information about the Company, the resale occurring
not less than one year (two years in case of an affiliate) after a party has
purchased and paid for the security to be sold, the sale being effected through
a "broker's transaction" or in transactions directly with a "market maker" (as
provided by Rule 144(f)) and the number of shares being sold during any three-
month period not exceeding specified limitations.

                                      -2-
<PAGE>

          (e)  No Public Market.    The Transferee understands that no public
               ----------------
market now exists for any of the securities issued by the Company, and that the
Company has made no assurances that a public market will ever exist for the
Option or the underlying Option Shares.

          (f)  The Transferee will not sell, transfer, pledge or otherwise
dispose of or encumber the Option or any of the Option Shares issuable to the
Transferee upon exercise of the Option unless and until (a) the Optionor such
Option Shares are subsequently registered under the Act and any applicable state
securities laws, or (b) (i) an exemption from such registration is available
thereunder, and (ii) the Transferee has notified the Company of the proposed
transfer and has furnished the Company with an opinion of counsel in a form
reasonably satisfactory to the Company that such transfer will not require
registration of the Optionor such Option Shares under the Securities Act.  The
Transferee understands that the Company is not obligated, and does not intend,
to register any such shares either under the Act or any state securities laws.
The Transferee authorizes the Company to issue stop transfer instructions to its
stock transfer agent, or, so long as the Transferee may act as its own transfer
agent, to make a stop transfer notation in its appropriate records, in order to
ensure the Transferee's compliance with this provision.

     3.   Agreements to Transfer and to be Bound.  By entering into this
          --------------------------------------
Agreement, each Transferee agrees to be bound by the terms and conditions of the
Option Agreement, including, but not limited to Section 6.1.3. of the Option
Agreement, which provides that (i) the Transferee will not contact the Optionor
regarding the Optionor's former employment or affiliation with the Company,
except to the extent necessary to carry out the provisions of the Option
Agreement and (ii) the Transferee shall not make any public statement regarding
the Optionor without the Optionor's prior consent.

     4.   Legends.  Each Transferee authorizes the Company and its agents to
          -------
place on each certificate for Option Shares issuable upon exercise of the Option
a legend stating that such Option Shares have not been registered under the Act
or any state securities law and setting forth the aforementioned restrictions on
transfer, including the following legends:

          (a)  "THE SECURITIES 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 IN A FORM SATISFACTORY TO THE CORPORATION OR ITS COUNSEL THAT
     REGISTRATION IS NOT REQUIRED UNDER THE SECURITIES ACT OF 1933."

          (b)  "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."

                                      -3-
<PAGE>

          (c)  Any other legend required by applicable state securities law.

     5.   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, the
Transferee agrees not to sell, make any short sale of, loan, grant any option
for the purchase of, or otherwise dispose of any of the Company's securities
then owned by the Transferee (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.

     6.   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
North Carolina, without giving effect to principles of conflicts of law.

          (b)  Entire Agreement; Enforcement of Rights.  Except as expressly set
               ---------------------------------------
forth herein, 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.

                                      -4-
<PAGE>

          (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; Transfer of Stock.  The rights and
               -----------------------------------------
obligations of the Transferee under this Agreement may only be assigned with the
prior written consent of the Company.  The Transferee understands that the
Company is entitled to withhold its consent to transfer of the Option Shares or
assignment of the Transferee's rights and obligations under this Agreement
unless the Transferee requires as a condition to any such transfer or assignment
that the Transferee's transferee[s] or assign[s] execute an agreement similar to
this Agreement or otherwise agree to be bound by terms and conditions similar to
those contained in this Agreement.

                           [Signature Page Follows]

                                      -5-
<PAGE>

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

     COMPANY:

                                         HAHT SOFTWARE, INC.

                                         By: /s/ Joseph N Riehle
                                            ---------------------------------

                                         Title: Chief Financial Officer
                                               ------------------------------

     TRANSFEREES:
                                            /s/ Richard Holcomb
                                         ------------------------------------
                                            RICHARD HOLCOMB

                                            /s/ Tyler Bennett
                                         ------------------------------------
                                            TYLER BENNETT

                                            /s/ Rowland Archer
                                         ------------------------------------
                                            ROWLAND ARCHER

                                         STANFORD UNIVERSITY

                                         By: /s/ Carol Gilmer
                                            ---------------------------------
                                             Name: Carol Gilmer
                                             Title: Assistant Secretary to the
                                             Board of Trustees of the Leland
                                             Stanford Junior University

                                         Address: 2770 Sand Hill Road
                                                  Menlo Park, CA 94025
<PAGE>

                                          JMI EQUITY FUND II, L.P.

                                          By: JMI Partners II, L.P.
                                              Its General Partner

                                          By: /s/ Charles E Noell
                                             ---------------------------------
                                             Charles Noell
                                             A General Partner

                                          Address: 12680 High Bluff Drive,
                                                   Suite 200
                                                   San Diego, CA 92130

                                          HIGH STREET PARTNERS, L.P.

                                          By: /s/ Stephen J Gaal
                                             ---------------------------------
                                             Stephen J. Gaal
                                             General Partner

                                          Address: High Street Tower
                                                   125 High Street, Suite 2500
                                                   Boston, MA 02110

                                          SIPPL MACDONALD VENTURES I, L.P.

                                          By: /s/ Jackie MacDonald
                                             ---------------------------------
                                             Name: Jackie MacDonald
                                             General Partner

                                          Address: 5 Elder Court
                                                   Menlo Park, CA 94025
<PAGE>

                              HAHT Software, Inc.
                              -------------------
                             Agreement to be Bound
                             ---------------------

     The undersigned hereby agrees to be bound by the terms of the Option to
Purchase Common Stock Agreement (the "Option Agreement") dated August 15, 1997
between James Hebert ("Optionor") and the Company

     The undersigned acknowledges receipt of a copy of the document listed
above.

Dated: September__, 1997

                                               _________________________________

                                            By: /s/ Richard Holcomb
                                               ---------------------------------

                                            Name: Richard Holcomb
                                                 -------------------------------
                                            Title: N/A
                                                  ------------------------------
<PAGE>

                              HAHT Software, Inc.
                              -------------------
                             Agreement to be Bound
                             ---------------------

     The undersigned hereby agrees to be bound by the terms of the Option to
Purchase Common Stock Agreement (the "Option Agreement") dated August 15, 1997
between James Hebert ("Optionor") and the Company

     The undersigned acknowledges receipt of a copy of the document listed
above.

Dated: September__, 1997

                                             Stanford University
                                           -------------------------------------

                                        By: /s/ Carol Gilmer___
                                           -------------------------------------

                                        Name: Carol Gilmer
                                             -----------------------------------

                                        Title: ASSISTANT SECRETARY
                                               THE BOARD OF TRUSTEES OF THE
                                               LELAND STANFORD JUNIOR UNIVERSITY
                                              ----------------------------------
<PAGE>

                              HAHT Software, Inc.
                              -------------------
                             Agreement to be Bound
                             ---------------------

     The undersigned hereby agrees to be bound by the terms of the Option to
Purchase Common Stock Agreement (the "Option Agreement") dated August 15, 1997
between James Hebert ("Optionor") and the Company

     The undersigned acknowledges receipt of a copy of the document listed
above.

Dated: September__, 1997

                                               ________________________________

                                            By: /s/ Tyler Bennett
                                               ---------------------------------

                                            Name: Tyler Bennett
                                                 -------------------------------

                                            Title:   CTO
                                                  ------------------------------
<PAGE>

                              HAHT Software, Inc.
                              -------------------
                             Agreement to be Bound
                             ---------------------

     The undersigned hereby agrees to be bound by the terms of the Option to
Purchase Common Stock Agreement (the "Option Agreement") dated August 15, 1997
between James Hebert ("Optionor") and the Company

     The undersigned acknowledges receipt of a copy of the document listed
above.

Dated: September__, 1997

                                              High Street Partner, LP
                                             ---------------------------------

                                          By: /s/ Stephen J Gaal
                                             ---------------------------------

                                          Name: Stephen J Gaal
                                               -------------------------------

                                          Title: GP
                                                ------------------------------
<PAGE>

                                  Schedule I
                            Schedule of Transferees

                                                                 Number of
            Transferee                                         Option Shares
------------------------------------                       --------------------
Richard Holcomb                                                   151,736

Tyler Bennett                                                     151,736

Rowland Archer                                                    455,208

JMI Equity Fund II, L.P.                                          307,285

High Street Partners, L.P.                                        121,301

Stanford University                                                20,742

Sippl Macdonald Ventures                                          157,617

Total:                                                          1,365,625

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00016-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00016-of-00352.parquet"}]]