Document:

<PAGE>

                                                                     EXHIBIT 4.3

                         INTERACTIVE INTELLIGENCE, INC.
                          EMPLOYEE STOCK PURCHASE PLAN

                  SECTION 1. DESIGNATION AND PURPOSE OF PLAN. The name of this
Plan is the Interactive Intelligence, Inc. Employee Stock Purchase Plan. The
purpose of the Plan is to provide incentives, through the ownership of Company
common stock, for employees to enhance Company performance through their
services. The Plan is intended to comply, and should be interpreted where
possible to comply, with the terms of Code section 423.

                  SECTION 2. DEFINITIONS. As used in the Plan, the following
terms, when capitalized, have the following meanings:

                  (a) "Agent" means Norwest Bank Minnesota, N.A., or any
         successor agent selected by the Company.

                  (b) "Beneficiary" means, with respect to a Participant, the
         individual or estate designated, pursuant to Section 11, to receive the
         Participant's Payroll Deduction Account balance and Investment Account
         assets in the event of the Participant's death.

                  (c) "Board" means the Board of Directors of the Company.

                  (d) "Code" means the Internal Revenue Code of 1986, as amended
         from time to time, and its interpretive rules and regulations.

                  (e) "Committee" means the Employee Stock Purchase Plan
         Committee established pursuant to Section 12 to administer the Plan.

                  (f) "Common Stock" means the Company's common stock, $0.01 par
         value.

                  (g) "Company" means Interactive Intelligence, Inc. and any
         successor by merger, consolidation or otherwise.

                  (h) "Compensation" means, with respect to an Eligible Employee
         for a calendar year, the Eligible Employee's wages, salary,
         commissions, bonuses, and other remuneration for services, including
         salary reduction contributions pursuant to elections under a plan
         subject to Code sections 125 or 401(k).

                  (i) "Designated Subsidiary" means any Subsidiary of the
         Company that is designated from time to time by the Committee to permit
         the employees of that Subsidiary to participate in the Plan.

                  (j) "Effective Date" means April 1, 2000, subject to approval
         of the Plan by the Company's shareholders within 12 months of the
         Plan's adoption.

                  (k) "Eligible Employee" means any employee of the Company or
         any Designated Subsidiary that meets the eligibility requirements of
         Section 4.

                  (l) "Enrollment Form" means the form filed with the Committee
         authorizing payroll deductions pursuant to Section 5.

<PAGE>

                  (m) "Entry Date" means the first day of each calendar quarter
         that coincides with or follows the Effective Date.

                  (n) "Fair Market Value" means, with respect to any Investment
         Date, the lower closing price, as reported on The Nasdaq Stock Market,
         on the first or last business day of the immediately preceding calendar
         quarter.

                  (o) "Investment Account" means the account established for
         each Participant to hold Common Stock purchased under the Plan pursuant
         to Section 6.

                  (p) "Investment Date" means the first business day of each
         calendar quarter after the Effective Date, on which shares of Common
         Stock are or could be traded on The Nasdaq Stock Market.

                  (q) "Participant" means an Eligible Employee who elects to
         participate in the Plan by filing an Enrollment Form pursuant to
         Section 5 and who has not ceased to participate in the Plan pursuant to
         Section 10.

                  (r) "Payroll Deduction Account" means the account established
         for a Participant to hold payroll deductions pursuant to Section 5.

                  (s) "Plan" means this instrument and the employee stock
         purchase plan established by this instrument.

                  (t) "Purchase Price" means the price for each whole and
         fractional share of Common Stock, including those purchased by dividend
         reinvestment, which shall be 85% of the Fair Market Value of such whole
         or fractional share as of the Investment Date.

                  (u) "Subsidiary" means any corporation which is a "subsidiary
         corporation" of the Company as such term is defined in Section 424 of
         the Code.

                  SECTION 3. SHARES RESERVED FOR THE PLAN. The Company shall
reserve for issuance and purchase by employees under the Plan an aggregate of
500,000 shares of Common Stock, subject to adjustment as provided in Section 14.
Shares subject to the Plan shall be authorized but unissued shares, treasury
shares or shares purchased on the open market or in private transactions. Shares
needed to satisfy the Plan may be acquired from the Company or by purchases at
the Company's expense on the open market or in private transactions.

                  SECTION 4. ELIGIBLE EMPLOYEES. All employees of the Company or
any Designated Subsidiary are eligible to participate in the Plan, except the
following:

                  (a) any employee who had not been employed for more than 30
         days prior to the Entry Date;

                  (b) any employee whose customary employment is 20 hours or
         less per week; and

                  (c) any employee whose customary employment is for not more
         than 5 months in a calendar year.

                                      -2-

<PAGE>

                  SECTION 5. ELECTION TO PARTICIPATE. Each Eligible Employee may
become a Participant on the Entry Date that coincides with or follows the date
he first becomes an Eligible Employee, by complying with this Section.

                  (a) The Eligible Employee shall file with the Committee an
         Enrollment Form authorizing specified regular payroll deductions from
         his Compensation.

                  (b) Regular payroll deductions shall be subject to a minimum
         deduction of 1% and a maximum deduction of 20% of Compensation for the
         payroll period and to a maximum deduction per payroll period of $1000.

                  (c) The Company shall hold all payroll deduction amounts as
         part of its general assets, but shall credit each Participant's payroll
         deduction amounts, without interest, to a Payroll Deduction Account in
         his name.

                  (d) To begin participation as of an Entry Date, an Eligible
         Employee must file his Enrollment Form with the Committee not less than
         14 days before that Entry Date, unless a shorter period of time is
         prescribed by the Committee. An Enrollment Form not filed within the
         prescribed filing period shall be effective the second Entry Date
         following the filing of the Enrollment Form.

                  (e) A Participant may increase or decrease his payroll
         deduction, effective as of the next Entry Date, by filing a new
         Enrollment Form.

                  (f) At any time during the first 2 1/2 months of a calendar
         quarter, a Participant may elect to terminate his payroll deductions
         and receive a refund of the balance in his Payroll Deduction Account
         accumulated during that calendar quarter. In that event, he shall not
         again become a Participant until the second Entry Date following his
         election to terminate.

                  SECTION 6. PARTICIPANT PURCHASES AND INVESTMENT ACCOUNTS. On
each Investment Date, each Participant shall be deemed, without further action,
to have purchased shares of Common Stock with the entire balance in his Payroll
Deduction Account, and the Agent shall credit the purchased shares to the
Participant's Investment Account.

                  (a) The Participant shall be credited with the number of whole
         and fractional shares (rounded to three decimal places) that his
         Payroll Deduction Account balance can purchase at the Purchase Price on
         that Investment Date.

                  (b) All dividends paid with respect to the whole and
         fractional shares of the Common Stock and shares so purchased shall be
         reinvested in Common Stock and added to the shares held for a
         Participant in his Investment Account.

                  (c) Expenses incurred in the purchase of shares and the
         expenses of the Agent shall be paid by the Company.

                  SECTION 7. LIMITATION ON PURCHASES. Participant purchases are
subject to the following limitations:

                  (a) During any one calendar year, a Participant may not
         purchase, under the Plan or under any other plan qualified under Code
         section 423, shares of Common Stock having a Fair Market Value
         (determined by reference to the Fair Market Value on each date of
         purchase) in excess of $25,000.
                                      -3-

<PAGE>

                  (b) During any one calendar year, all Participants who are
         corporate officers of the Company may not purchase, in the aggregate,
         more than 50% of the Common Stock purchased under the Plan during that
         calendar year.

                  (c) A Participant's Payroll Deduction Account may not be used
         to purchase Common Stock on any Investment Date to the extent that,
         after such purchase, the Participant would own (or be considered as
         owning within the meaning of Code section 424(d)) stock possessing 5%
         or more of the total combined voting power of the Company. For this
         purpose, stock that the Participant may purchase under any outstanding
         option shall be treated as owned by such Participant. As of the first
         Investment Date on which this paragraph limits a Participant's ability
         to purchase Common Stock, the Participant's payroll deductions shall
         terminate, and he shall receive a refund of the balance in his Payroll
         Deduction Account.

                  SECTION 8. STOCK PURCHASES BY AGENT. As of each Investment
Date, the Agent shall acquire, using the accumulated balances of all
Participants' Payroll Deduction Accounts, shares of Common Stock to be credited
to those Participants' Investment Accounts.

                  (a) The Agent shall acquire shares issued or held as treasury
         shares by the Company or, if directed by the Committee, by purchases on
         the open market or in private transactions.

                  (b) If shares are purchased in one or more transactions on the
         open market or in private transactions at the direction of the
         Committee, the Company will pay the Agent the difference between the
         Purchase Price and the price at which such shares are purchased for
         Participants.

                  SECTION 9. INVESTMENT ACCOUNT WITHDRAWALS. Upon 5 business
days advance written notice to the Agent, a Participant may elect as of any
Investment Date to withdraw the assets in his Investment Account.

                  (a) The Participant may elect to obtain a certificate for the
         whole shares of Common Stock credited to his Investment Account. As a
         condition of participation in the Plan, each Participant agrees to
         notify the Company if he sells or otherwise disposes of any of his
         shares of Common Stock within two years of the Entry Date immediately
         preceding the Investment Date on which such shares were purchased.

                  (b) The Participant may elect that all shares in his
         Investment Account be sold and that the proceeds, less expenses of
         sale, be remitted to him.

                  (c) In either event, the Agent will sell any fractional shares
         held in the Investment Account and remit the proceeds of such sale,
         less selling expenses, to the Participant.

                  (d) If a Participant withdraws the assets in his Investment
         Account, he shall cease to be a Participant and shall not again become
         a Participant until the second Entry Date following the withdrawal.

                  SECTION 10. CESSATION OF PARTICIPATION. If a Participant dies,
terminates employment, or withdraws assets from his Investment Account, he shall
cease to participate in the Plan, the Company shall refund the balance in his
Payroll Deduction Account, and the Agent shall distribute the assets in his
Investment Account.

                  (a) In the event of the Participant's death, his Payroll
         Deduction Account balance and his Investment Account assets shall be
         distributed to his Beneficiary.
                                      -4-

<PAGE>

                  (b) If the Participant terminates employment, his Payroll
         Deduction Account balance and his Investment Account assets shall be
         distributed to him.

                  (c) Upon distribution, the Participant or, in the event of his
         death, his Beneficiary may elect to obtain a certificate for the whole
         shares of Common Stock credited to the Participant's Investment Account
         or may elect that any whole shares in his Investment Account be sold.
         In that event, the Agent will sell such whole shares and any fractional
         shares held in the Investment Account and remit the proceeds of such
         sale, less selling expenses.

                  SECTION 11. BENEFICIAL INTERESTS IN PLAN. Each Payroll
Deduction Account and each Investment Account shall be in the name of the
Participant. A Participant may designate a Beneficiary to receive his interests
in both accounts in the event of his death by complying with procedures
prescribed by the Committee. If a Participant dies without having designated a
Beneficiary, or if the Beneficiary does not survive the Participant, the
Participant's estate shall be his Beneficiary.

                  SECTION 12. ADMINISTRATION OF THE PLAN. The Plan shall be
administered by the Employee Stock Purchase Plan Committee.

                  (a) The Committee shall consist of not less than three members
         appointed by the Board. The Board from time to time may fill vacancies
         in the Committee.

                  (b) Subject to the express provisions of the Plan, the
         Committee shall have the authority to take any and all actions
         (including directing the Agent as to the acquisition of shares)
         necessary to implement the Plan and to interpret the Plan, to
         prescribe, amend and rescind rules and regulations relating to it, and
         to make all other determinations necessary or advisable in
         administering the Plan. All of such determinations shall be final and
         binding upon all persons.

                  (c) A quorum of the Committee shall consist of a majority of
         its members and the Committee may act by vote of a majority of its
         members at a meeting at which a quorum is present, or without a meeting
         by a written consent to their action taken signed by all members of the
         Committee.

                  (d) The Committee may request advice or assistance or employ
         such other persons as are necessary for proper administration of the
         Plan.

                  SECTION 13. RIGHTS NOT TRANSFERABLE. Rights under the Plan are
not transferable by a Participant.

                  SECTION 14. CHANGE IN CAPITAL STRUCTURE. Despite anything in
the Plan to the contrary, the Committee may take the following actions without
the consent of any Participant or Beneficiary, and the Committee's determination
shall be conclusive and binding on all persons for all purposes.

                  (a) In the event of a stock dividend, stock split or
         combination of shares, recapitalization or merger in which the Company
         is the surviving corporation or other change in the Company's capital
         stock (including, but not limited to, the creation or issuance to
         shareholders generally of rights, options or warrants for the purchase
         of common stock or preferred stock of the Company), the number and kind
         of shares of stock or securities of the Company to be subject to the
         Plan, the maximum number of shares or securities which may be delivered
         under the Plan, the selling price and other relevant provisions shall
         be appropriately adjusted by the Committee, whose determination shall
         be binding on all persons.

                  (b) If the Company is a party to a consolidation or a merger
         in which the Company is not the surviving corporation, a transaction
         that results in the acquisition of substantially all of the

                                      -5-

<PAGE>

         Company's outstanding stock by a single person or entity, or a sale or
         transfer of substantially all of the Company's assets, the Committee
         may take such actions with respect to the Plan as the Committee deems
         appropriate.

                  SECTION 15. AMENDMENT OF THE PLAN. The Board may at any time,
or from time to time, amend the Plan in any respect. The shareholders of the
Company, however, must approve any amendment that would increase the number of
shares of Common Stock that may be issued under the Plan (other than an increase
merely reflecting a change in capitalization of the Company) or a change in the
designation of any corporations (other than a Subsidiary) whose employees become
Eligible Employees under the Plan.

                  SECTION 16. TERMINATION OF THE PLAN. The Plan and all rights
of employees and beneficiaries under the Plan shall terminate:

                  (a) on the Investment Date that Participants become entitled
         to purchase a number of shares greater than the number of reserved
         shares remaining available for purchase; or

                  (b) at any date at the discretion of the Board.

In the event that the Plan terminates under circumstances described in (a)
above, reserved shares remaining as of the termination date shall be issued to
Participants on a prorata basis. Upon termination of the Plan, each Participant
shall receive the balance in his Payroll Deduction Account and all shares in his
Investment Account.

                  SECTION 17. INDEMNIFICATION OF COMMITTEE. Members of the
Committee shall be entitled to indemnification and reimbursement to the same
extent applicable to directors of the Company pursuant to its Articles of
Incorporation and Bylaws.

                  SECTION 18. GOVERNMENT REGULATIONS. The Plan, the grant and
exercise of the rights to purchase shares under the Plan, and the Company's
obligation to sell and deliver shares upon the exercise of rights to purchase
shares, shall be subject to all applicable federal, state and foreign laws,
rules and regulations, and to such approvals by any regulatory or government
agency as may, in the opinion of counsel for the Company, be required.

                  INTERACTIVE INTELLIGENCE, INC. has caused this Interactive
Intelligence, Inc. Employee Stock Purchase Plan to be adopted as of April 1,
2000.

                                      -6-<PAGE>

                                                                 Exhibit 10.49

                      LOAN DOCUMENT MODIFICATION AGREEMENT
                      NUMBER 7; DATED AS OF MARCH 20, 2000

         LOAN DOCUMENT MODIFICATION AGREEMENT dated as of March 20, 2000 (this
"Agreement") by and among SILICON VALLEY BANK (the "Bank"), a
California-chartered bank with its principal place of business located at 3003
Tasman Drive, Santa Clara, California 95054, and with a loan production office
located at 40 William Street, Wellesley, Massachusetts 02481, doing business
under the name "Silicon Valley East," LIONBRIDGE TECHNOLOGIES HOLDINGS B.V., a
company with limited liability, incorporated in the Netherlands and having a
principal place of business located at The Sinus Building, Overschiestraat 55,
1062 HN, Amsterdam, The Netherlands, LIONBRIDGE TECHNOLOGIES B.V., a company
with limited liability, incorporated in Netherlands and having a principal place
of business located at the same address (each a "Borrower" and collectively, the
"Borrowers") and LIONBRIDGE TECHNOLOGIES, INC., a Delaware company with its
principal place of business located at 950 Winter Street, Suite 2410, Waltham,
Massachusetts 02451 (the "Parent Guarantor").

         1.       REFERENCE TO EXISTING LOAN DOCUMENTS.

         Reference is hereby made to that Loan Agreement dated as of September
26, 1997 among the Bank and the Borrowers, as amended by Loan Documentation
Modification Agreement No. 1 dated as of May 21, 1998, as further amended by
Loan Document Modification Agreement No. 2 dated as of February 25, 1999, Loan
Document Modification Agreement No. 3 dated as of May 20, 1999, Loan Document
Modification Agreement No. 4 dated as of July 16, 1999, Loan Document
Modification Agreement No. 5 dated as of September 20, 1999 and Loan Document
Modification Agreement No. 6 dated as of December 20, 1999 (with the attached
schedules and exhibits, and as the same may hereafter be further amended,
modified, supplemented, extended or restated from time to time, the "Loan
Agreement") and the Loan Documents referred to therein, including without
limitation that certain Amended and Restated Promissory Note of the Borrowers
dated as of December 20, 1999 in the principal amount of $8,000,000 (the
"Existing Note") and the Security Documents referred to therein, and also
including that certain Amended and Restated Guarantee of the Parent Guarantor
dated as of May 21, 1998 in favor of the Bank (the "Parent Guarantee"). Unless
otherwise defined herein, capitalized terms used in this Agreement shall have
the same respective meanings as set forth in the Loan Agreement.

         2.       EFFECTIVE DATE.

         This Agreement shall become effective as of March 20, 2000 (the
"Effective Date"), provided that the Bank shall have received the following on
or before March 31, 2000 and provided further, however, in no event shall this
Agreement become effective until signed by an officer of the Bank in California:

                  a. two copies of this Agreement, duly executed by each
Borrower and the Parent Guarantor;

                  b. an amended and restated promissory note in the form
enclosed herewith (the "Amended Note"), duly executed by the Borrowers;

<PAGE>

                                       -2-

                  c. the attached consents of affiliated entities who have
previously furnished guaranties in favor of the Bank of the obligations of the
Borrowers, duly executed by officers thereof;

                  d. payment of the Bank's facility fee specified below; and

                  e. such other documents, and completion of such other matters,
as the Bank may reasonably request in connection with the amendment of the Loan
Agreement, as contemplated hereunder.

         By the signature of its authorized officer below, the Borrowers are
hereby representing that, except as modified in SCHEDULE A attached hereto, the
representations of the Borrowers set forth in the Loan Documents (including
those contained in the Loan Agreement, as amended by this Agreement) are true
and correct as of the Effective Date as if made on and as of such date. In
addition, the Borrowers confirm their authorization as to the debiting of their
account with the Bank in the amount of $6,667 in order to pay the Bank's
facility fee for the period up to and including the extended Revolving Maturity
Date. Finally, the Borrowers (and each guarantor signing below) agree that, as
of the Effective Date, they have no defenses against their obligations to pay
any amounts under the Loan Agreement and the other Loan Documents.

         3.       DESCRIPTION OF CHANGE IN TERMS.

         As of the Effective Date, the Loan Agreement is modified in the
following respects:

                  a. Section 1.1 of the Loan Agreement is hereby amended by
restating the definition of "Revolving Maturity Date" in its entirety as
follows:

                  "`Revolving Maturity Date' means May 20, 2000."

                  b. The Loan Agreement and the other Loan Documents are hereby
amended wherever necessary or appropriate to reflect the foregoing change.

         4.       CONTINUING VALIDITY.

         Upon the effectiveness hereof, each reference in each Security
Instrument or other Loan Document to (i) "the Loan Agreement," "thereunder,"
"thereof," "therein" or words of like import referring to the Loan Agreement,
shall mean and be a reference to the Loan Agreement, as amended hereby and (ii)
"the Parent Guarantee," "thereunder," "thereof," "therein" or words of like
import referring to the Parent Guarantee, shall mean and be a reference to the
Parent Guarantee, as amended hereby. Except as specifically set forth above, the
Loan Agreement shall remain in full force and effect and is hereby ratified and
confirmed.

         Each of the other Loan Documents is in full force and effect and is
hereby ratified and confirmed. The amendments and limited waiver set forth above
(i) do not constitute a waiver or modification of any term, condition or
covenant of the Loan Agreement or any other Loan Document, other than as
expressly set forth herein, and (ii) shall not prejudice any rights which the
Bank may now or hereafter have under or in connection with the Loan Agreement,
as

<PAGE>

                                       -3-

modified hereby, or the other Loan Documents, and shall not obligate the Bank to
assent to any further modifications.

         5.       MISCELLANEOUS.

                  a. This Agreement may be signed in one or more counterparts
each of which taken together shall constitute one and the same document.

                  b. THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN
ACCORDANCE WITH THE LAWS OF THE COMMONWEALTH OF MASSACHUSETTS.

                  c. THE BORROWERS ACCEPT FOR THEMSELVES AND IN CONNECTION WITH
THEIR PROPERTIES, UNCONDITIONALLY, THE NON-EXCLUSIVE JURISDICTION OF ANY STATE
OR FEDERAL COURT OF COMPETENT JURISDICTION IN THE COMMONWEALTH OF MASSACHUSETTS
IN ANY ACTION, SUIT, OR PROCEEDING OF ANY KIND AGAINST THEM WHICH ARISES OUT OF
OR BY REASON OF THIS AGREEMENT; PROVIDED, HOWEVER, THAT IF FOR ANY REASON THE
BANK CANNOT AVAIL ITSELF OF THE COURTS OF THE COMMONWEALTH OF MASSACHUSETTS,
THEN VENUE SHALL LIE IN SANTA CLARA COUNTY, CALIFORNIA.

                  d. The Borrowers agree to promptly pay on demand all costs and
expenses of the Bank in connection with the preparation, reproduction, execution
and delivery of this Agreement and the other instruments and documents to be
delivered hereunder, including the reasonable fees and out-of-pocket expenses of
Sullivan & Worcester LLP, special counsel for the Bank with respect thereto.

                  [Remainder of page intentionally left blank.]

<PAGE>

         IN WITNESS WHEREOF, the Bank and the Borrowers have caused this
Agreement to be signed under seal by their respective duly authorized officers
as of the date set forth above.

                                   Sincerely,

                                  SILICON VALLEY EAST, a Division
                                      of Silicon Valley Bank

                                  By:_____________________________
                                             Andrew H. Tsao
                                             Senior Vice President

                                  SILICON VALLEY BANK

                                  By:______________________________
                                             Name:
                                             Title:
                                             (signed in Santa Clara, CA)

                                  BORROWERS:

                                  LIONBRIDGE TECHNOLOGIES HOLDINGS B.V.

                                  By:______________________________
                                              Rory J. Cowan
                                              Managing Director

                                  LIONBRIDGE TECHNOLOGIES B.V.

                                  By:______________________________
                                              Rory J. Cowan
                                              Managing Director

                                  PARENT GUARANTOR:

                                  LIONBRIDGE TECHNOLOGIES, INC.

                                  By:______________________________
                                              Rory J. Cowan
                                              Title:

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00006-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00006-of-00352.parquet"}]]