As filed with the Securities and Exchange Commission on June 8, 2000

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549


FORM S-8
REGISTRATION STATEMENT
UNDER
THE SECURITIES ACT OF 1933


SYNOPSYS, INC.
(Exact Name of Registrant As Specified in its Charter)


         DELAWARE                                       56-1546236
------------------------                 ---------------------------------------
(State of Incorporation)                 (I.R.S. Employer Identification Number)

700 EAST MIDDLEFIELD ROAD
MOUNTAIN VIEW, CA 94043-4033
(Address, Including Zip Code, of Registrant's Principal Executive Offices)


Employee Stock Purchase Plan
International Employee Stock Purchase Plan

1998 Nonstatutory Stock Option Plan
(Full Title of the Plans)


AART J. DE GEUS
CHIEF EXECUTIVE OFFICER
SYNOPSYS, INC.
700 EAST MIDDLEFIELD ROAD
MOUNTAIN VIEW, CA 94043-4033
(650) 962-5000
(Name, Address, Including Zip Code, and Telephone Number,
Including Area Code, of Agent for Process)


Copy to:
THOMAS C. DEFILIPPS, ESQ.
WILSON SONSINI GOODRICH & ROSATI
PROFESSIONAL CORPORATION
650 PAGE MILL ROAD
PALO ALTO, CALIFORNIA 94303
(650) 493-9300







                                       CALCULATION OF REGISTRATION FEE

TITLE OF EACH CLASS                                     PROPOSED MAXIMUM   PROPOSED MAXIMUM     AMOUNT OF
OF SECURITIES TO BE                     AMOUNT TO BE     OFFERING PRICE       AGGREGATE        REGISTRATION
REGISTERED                              REGISTERED(1)    PER SHARE(2)      OFFERING PRICE(2)      FEE(2)
-----------------------------------------------------------------------------------------------------------
Common Stock, $0.01 par value
to be issued under:

     Employee Stock Purchase Plan
     and International Employee
     Stock Purchase Plan              1,200,000 shares     $42.63/sh.       $51,159,375.00     $13,506.08

     1998 Nonstatutory Stock
     Option Plan                        540,000 shares     $50.16/sh.       $27,084,375.00      $7,150.28

Total:                                1,740,000 shares       ---                  ---          $20,656.36
-----------------------------------------------------------------------------------------------------------

(1) Pursuant to Rule 429 under the Securities Act of 1933, as amended (the "Securities Act"), the prospectus relating hereto also relates to shares registered under Form S-8 Registration Statements, 333-77597 and 333-50947.

(2) Computed in accordance with Rule 457(h) solely for the purpose of calculating the registration fee.

(3) Based upon 85% of the average of the high and low sale prices on June 6, 2000, as reported on the Nasdaq National Market.


PART II

INFORMATION REQUIRED IN THE REGISTRATION STATEMENT

ITEM 3. INCORPORATION OF DOCUMENTS BY REFERENCE.

Synopsys, Inc. (the "Company") hereby incorporates by reference in this registration statement the following documents:

(a) The Company's Annual Report on Form 10-K for the fiscal year ended September 30, 1999 filed pursuant to Section 13 of the Securities Exchange Act of 1934, as amended (the "Exchange Act").

(b) The Company's Quarterly Report on Form 10-Q for the quarter ended January 29, 2000, filed pursuant to the Exchange Act.

(d) The Company's Current Report on Form 8-K regarding its financial results for the quarter ended January 29, 2000, filed pursuant to
Section 13 of the Exchange Act.

(e) The Company's Current Report on Form 8-K regarding its financial results for the quarter ended April 29, 2000, filed pursuant to
Section 13 of the Exchange Act.

(f) The description of the Company's Common Stock as set forth in the Registration Statement filed by the Company on Form 8-A on January 24, 1992 pursuant to Section 12(g) of the Exchange Act and any amendments or reports filed with the Securities and Exchange Commission for the purpose of updating such description.

(g) All documents subsequently filed by the Company pursuant to Sections
13(a), 13(c), 14 and 15(d) of the Exchange Act, prior to the filing of a post-effective amendment to this registration statement which indicates that all securities offered hereby have been sold or which deregisters all securities remaining unsold, shall be deemed to be incorporated by reference in this registration statement and to be a part hereof from the date of filing of such documents.

ITEM 4. DESCRIPTION OF SECURITIES.

The class of securities to be offered is registered under Section 12 of the Exchange Act.

ITEM 5. INTERESTS OF NAMED EXPERTS AND COUNSEL.

Not applicable.

ITEM 6. INDEMNIFICATION OF DIRECTORS AND OFFICERS.

Delaware law authorizes corporations to eliminate the personal liability of directors to corporations and their stockholders for monetary damage for breach or alleged breach of the directors' "duty of care." While the relevant statute does not change directors' duty of care, it enables corporations to limit available relief to equitable remedies such as injunction or rescission. The statute has no effect on directors' duty of loyalty, acts or omissions not in good faith or involving intentional misconduct or knowing violations of law, illegal payment of dividends and approval of any transaction from which a director derives an improper personal benefit.

The Company has adopted provisions in its Certificate of Incorporation which eliminate the personal liability of its directors to the Company and its stockholders for monetary damages for breach or alleged


breach of their duty of care. The Bylaws of the Company provide for indemnification of its directors, officers, employees and agents to the full extent permitted by the General Corporation Law of the State of Delaware (the "DGCL"), the Company's state of incorporation, including those circumstances in which indemnification would otherwise be discretionary under the DGCL. Section 145 of the DGCL provides for indemnification in terms sufficiently broad to indemnify such individuals, under certain circumstances, for liabilities (including reimbursement of expenses incurred) arising under the Securities Act.

ITEM 7. EXEMPTION FROM REGISTRATION CLAIMED.

Not applicable.

ITEM 8. EXHIBITS.

See Index to Exhibits.

ITEM 9. UNDERTAKINGS.

(a) Rule 415 Offering. The undersigned registrant hereby undertakes:

(1) To file, during any period in which offers or sales are being made, a post-effective amendment to this registration statement to include any material information with respect to the plan of distribution not previously disclosed in the registration statement or any material change to such information in the registration statement;

(2) That, for the purpose of determining any liability under the Securities Act, each such post-effective amendment shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof.

(3) To remove from registration by means of a post-effective amendment any of the securities being registered which remain unsold at the termination of the offering.

(b) Filings incorporating subsequent Exchange Act documents by reference.

The undersigned registrant hereby undertakes that, for purposes of determining any liability under the Securities Act, each filing of the registrant's annual report pursuant to Section 13(a) or Section 15(d) of the Exchange Act (and, where applicable, each filing of an employee benefit plan's annual report pursuant to Section 15(d) of the Exchange Act) that is incorporated by reference in the registration statement shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof.

(c) Request for acceleration of effective date or filing of registration statement on Form S-8.

Insofar as indemnification for liabilities arising under the Securities Act may be permitted to directors, officers and controlling persons of the registrant pursuant to the foregoing provisions, or otherwise, the registrant has been advised that in the opinion of the Securities and Exchange Commission such indemnification is against public policy as expressed in the Securities Act and is, therefore, unenforceable. In the event that a claim for indemnification against such liabilities (other than the payment by the registrant of expenses incurred or paid by a director, officer or controlling person of the registrant in the successful defense of any action, suit or proceeding) is asserted by such director, officer or controlling person in connection with the securities being registered, the registrant will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the question whether such indemnification by it is against public policy as expressed in the Securities Act and will be governed by the final adjudication of such issue.


SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, the registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-8 and has duly caused this registration statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Mountain View, State of California, on May 23, 2000.

SYNOPSYS, INC.

By:

/s/ Aart J. de Geus
-----------------------
Aart J. de Geus
Chief Executive Officer


POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENTS, that each such person whose signature appears below constitutes and appoints Aart J. de Geus and Robert B. Henske, and each of them, as his or her true and lawful attorney-in-fact, with full power of substitution, for him or her in any and all capacities, to sign any amendments (including post-effective amendments) to this Registration Statement on Form S-8, and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform each and every act and thing requisite and necessary to be done in connection therewith, as fully to all intents and purposes as he or she might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, or any of them, or their or his substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

PURSUANT TO THE REQUIREMENTS OF THE SECURITIES ACT OF 1933, THIS REGISTRATION STATEMENT HAS BEEN SIGNED BY THE FOLLOWING PERSONS IN THE CAPACITIES AND ON THE DATES INDICATED.

          SIGNATURE                              TITLE                        DATE
--------------------------------------------------------------------------------------
/s/ Aart J. de Geus                Chief Executive Officer and            May 23, 2000
-------------------------------    Chairman of the Board of Directors
Aart J. de Geus                    (Principal Executive Officer)

/s/ Chi-Foon Chan                  President, Chief Operating             May 23, 2000
-------------------------------    Officer and Director
Chi-Foon Chan

/s/ Andy D. Bryant                 Director                               May 23, 2000
-------------------------------
Andy D. Bryant

/s/ Deborah A. Coleman             Director                               May 23, 2000
-------------------------------
Deborah A. Coleman

/s/ Harvey C. Jones                Director                               May 23, 2000
-------------------------------
Harvey C. Jones, Jr.

/s/ William W. Lattin              Director                               May 23, 2000
-------------------------------
William W. Lattin

/s/ A. Richard Newton              Director                               May 23, 2000
-------------------------------
A. Richard Newton

/s/ SASSON SOMEKH                  Director                               May 30, 2000
-------------------------------
Sasson Somekh

/s/ Steven C. Walske               Director                               May 23, 2000
-------------------------------
Steven C. Walske

/s/ Robert B. Henske               Chief Financial Officer                May 23, 2000
-------------------------------    (Principal Financial Officer)
Robert B. Henske

/s/ Richard Rowley                 Corporate Controller                   May 23, 2000
-------------------------------    (Principal Accounting Officer)
Richard Rowley


INDEX TO EXHIBITS

Exhibit
Number                             Exhibit
-------                            -------
5.1            Opinion of counsel as to legality of securities being registered

10.1           Employee Stock Purchase Plan

10.2           International Employee Stock Purchase Plan

10.3           1998 Nonstatutory Stock Option Plan*

23.1           Consent of Independent Auditors

23.2           Consent of Counsel (included in Exhibit 5.1)

24.1           Power of Attorney (see page 6)


* Incorporated by reference to exhibit to the Company's Registration Statement on Form S-8 (File No. 333-90643) as filed with the Securities and Exchange Commission on November 9, 1999


EXHIBIT 5.1

June 2, 2000

Synopsys, Inc.
700 East Middlefield Road
Mountain View, CA 94043

Re: Registration Statement on Form S-8

Ladies and Gentlemen:

We have examined the Registration Statement on Form S-8 to be filed by you with the Securities and Exchange Commission on or about June 8, 2000, (the "Registration Statement") in connection with the registration under the Securities Act of 1933, as amended, for an aggregate of 1,200,000 shares of your Common Stock, $0.01 par value per share, under the Employee Stock Purchase Plan and International Employee Stock Purchase Plan and 540,000 of such Common Stock under the 1998 Nonstatutory Stock Option Plan. Such shares of Common Stock are referred to herein as the "Shares," and such plans are referred to herein as the "Plans." As your counsel in connection with this transaction, we have examined the proceedings taken and are familiar with the proceedings proposed to be taken by you in connection with the issuance and sale of the Shares pursuant to the Plans.

It is our opinion that, when issued and sold in the manner described in the Plans and pursuant to the agreements which accompany each grant under the Plans, the Shares will be legally and validly issued, fully-paid and non-assessable.

We consent to the use of this opinion as an exhibit to the Registration Statement, and further consent to the use of our name wherever appearing in the Registration Statement and any amendments thereto.

Sincerely,

WILSON SONSINI GOODRICH & ROSATI
Professional Corporation


EXHIBIT 10.1

SYNOPSYS, INC.

EMPLOYEE STOCK PURCHASE PLAN

(As amended on August 1, 1999, January 11, 2000 and March 8, 2000)

I. PURPOSE

The Synopsys, Inc. Employee Stock Purchase Plan (the "Plan") is intended to provide Eligible Employees of the Company and one or more of its Corporate Affiliates with the opportunity to acquire a proprietary interest in the Company through the periodic application of their payroll deductions to the purchase of shares of the Company's common stock.

II. DEFINITIONS

For purposes of plan administration, the following terms shall have the meanings indicated.

Base Salary means all compensation paid as wages, salaries, commissions, overtime, and bonuses, but excluding all of the following items (even if included in taxable income): reimbursements, car allowances or other expense allowances, severance pay, fringe benefits (cash and noncash), moving expenses, deferred compensation, income attributable to stock options, restricted stock grants, SARs and other equity-related incentive programs, and welfare benefits.

Code means the Internal Revenue Code of 1986, as amended from time to time.

Company means Synopsys, Inc., a Delaware corporation, and any corporate successor to all or substantially all of the assets or voting stock of Synopsys, Inc. which shall by appropriate action adopt the Plan.

Common Stock means shares of the Company's common stock.

Corporate Stock means shares of the Company's common stock.

Corporate Affiliate means any company which is a parent or subsidiary corporation of the Company (as determined in accordance with Code Section 424), including any parent or subsidiary corporation which becomes such after the Effective Date.

Effective Date means the first day of the initial offering period scheduled to commence upon the later of (i) February 1, 1992 or (ii) the effective date of the S-8 Registration Statement


covering the share of Common Stock issuable under the Plan. However, for any Corporate Affiliate which becomes a participating Company in the Plan after the first day of the initial offering period, a subsequent Effective Date shall be designated with respect to participation by its Eligible Employees.

Eligible Employee means any person who is engaged, on a regularly-scheduled basis of more than twenty (20) hours per week and more than five (5) months per calendar year, in the rendition of personal services to the Company or any other Participating Company for earnings considered wages under Section 3121(a) of the Code.

Enrollment Date has the meaning ascribed to it in Section V.A.

Participant means any Eligible Employee of a Participating Company who is actively participating in the Plan.

Participating Company means the Company and such Corporate Affiliate or Affiliates as may be designated from time to time by the Board.

Semi-Annual Entry Date means (i) during 1999 and each preceding calendar year within an offering period in effect under the Plan, the first business day of May and the first business day of November and (ii) during 2000 and all subsequent calendar years within an offering period under the Plan, the first business day of March and the first business day of September. The earliest Semi-Annual Entry Date under the Plan shall be November 2, 1992.

Semi-Annual Period of Participation means each period for which the Participant actually participates in an offering period in effect under the Plan. There shall be a maximum of four (4) periods of participation within each offering period. Except as otherwise designated by the Plan Administrator, each such period shall commence on the applicable Semi-Annual Entry Date.

Semi-Annual Purchase Date means (i) during 1999 and each preceding year on which shares of Common Stock are automatically purchased for Participants under the Plan, the last business day of April and October, and (ii) during 2000 and each subsequent year on which shares of Common Stock are automatically purchased for Participants under the Plan, the last business day of February and August.

III. ADMINISTRATION

The Plan shall be administered by the Board of Directors of the Company or a committee that will satisfy Rule 16b-3 of the Securities and Exchange Commission, as in effect with respect to

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the Company from time to time (in either case, the "Board"). The Board may from time to time select a committee or persons (the "Plan Administrator") to be responsible for any transactions not subject to Rule 16b-3. Subject to the express provisions of the Plan, to the overall supervision of the Board, and to the limitations of Section 423 of the Code, the Plan Administrator may administer and interpret the Plan in any manner it believes to be desirable (including the designation of a brokerage firm at which accounts for the holding of shares purchased under the Plan must be established by each employee desiring to participate in the Plan), and any such interpretation shall be final and binding on all parties who have an interest in the Plan.

IV. OFFERING PERIODS

The Plan shall be implemented in a series of offering periods. Each offering period shall be of a duration of twenty-four (24) months or less as designated by the Plan Administrator prior to the start date of any offering period, except that offering periods that include the Semi-Annual Entry Date on November 1, 1999 shall be of a duration of twenty-two (22) months. Within each offering period, there shall be a maximum of four (4) Semi-Annual Periods of Participation.

V. ELIGIBILITY AND PARTICIPATION

A. Each Eligible Employee will be automatically enrolled in the Plan in the offering period that begins on the first Semi-Annual Entry Date following the commencement of employment; thereafter, any Eligible Employee may enroll or re-enroll in the Plan in the offering period that begins as of any Semi-Annual Entry Date, or such other days as may be established by the Board from time to time (each, an "Enrollment Date"). To participate, an Eligible Employee must complete, sign, and submit to the Company an enrollment form prescribed by the Plan Administrator. Any enrollment form received by the Company by the 15th day of the month preceding an Enrollment Date (or by the Enrollment Date in the case of employees hired after such 15th day), or such other date established by the Plan Administrator from time to time, will be effective on that Enrollment Date. Enrollment or re-enrollment by a Participant in the Plan on an Enrollment Date will constitute the grant by the Company to the Participant of an option to purchase shares of Common Stock from the Company under the Plan. At the end of each offering period, each Participant who has not withdrawn from the Plan will automatically be re-enrolled in the Plan in the offering period that begins on the Enrollment Date immediately following the date on which the option expires. Furthermore, except as may otherwise be determined by the Plan Administrator, each Participant who has not withdrawn from the Plan will automatically be re-enrolled in the Plan in each offering period that begins on an Enrollment Date on which the fair market value per share of the Company's Common Stock is lower than the fair market value per share of the

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Company's Common Stock on the Enrollment Date for the offering period in which the Participant is then enrolled. Notwithstanding anything in the Plan to the contrary, if the fair market value (the "Authorization Date FVM") on the date (the "Authorization Date") on which additional shares of Common Stock are authorized for issuance hereunder by the Company's shareholders is higher than the fair market value at the beginning of any Offering Period that commenced prior to the Authorization Date, then, with respect to any of such authorized shares available to be issued on Purchase Dates relating to such Offering Period, the Authorization Date FMV shall be used instead of the fair market value on the Enrollment Date for the purposes of the preceding sentence, provided that the Plan Administrator, in its discretion, may waive application of this sentence with respect to the first Purchase Date occurring after the Authorization Date.

B. The payroll deduction authorized by the Participant for purposes of acquiring shares of Common Stock under the Plan may be zero percent (0%) or any whole multiple of one percent (1%) of the Base Salary paid to the Participant during each Semi-Annual Period of Participation within the offering period, up to a maximum of ten percent (10%). The deduction rate so authorized shall continue in effect for the entire Semi-Annual Period of Participation and for each successive Semi-Annual Period of Participation unless (i) the Participant shall change the rate for a subsequent Semi-Annual Period of Participation by filing the appropriate form with the Plan Administrator prior to the commencement of that Semi-Annual Period of Participation or (ii) the Participant shall change the rate within a Semi-Annual Period of Participation by filing the appropriate form with the Plan Administrator. The new rate shall become effective as soon as practicable following the filing of such form. A Participant may not increase or decrease the deduction rate more than once per Semi-Annual Period of Participation in addition to fixing the rate at the beginning of the Semi-Annual Period of Participation. Payroll deductions, however, will automatically cease upon the termination of the Participant's purchase right in accordance with Article VII below.

C. In no event may any Participant's payroll deductions for any one Semi-Annual Period of Participation exceed Seven Thousand Five Hundred Dollars ($7,500.00).

VI. STOCK SUBJECT TO PLAN

A. The Common Stock purchasable by Participants under the Plan shall, solely in the discretion of the Plan Administrator, be made available from either authorized but unissued shares of the Common Stock or from shares of Common Stock reacquired by the Company, including shares of Common Stock purchased on the open market. The total number of shares which may be issued under the Plan shall not exceed 5,850,000 shares, less any shares sold

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under the Synopsys, Inc. International Employee Stock Purchase Plan (subject to adjustment under Section VI.B below). B. In the event any change is made to the Company's outstanding Common Stock by reason of any stock dividend, stock split, combination of shares or other change affecting such outstanding Common Stock as a class without receipt of consideration, then appropriate adjustments shall be made by the Plan Administrator to (i) the class and maximum number of shares issuable over the term of the Plan, (ii) the class and maximum number of shares purchasable per Participant during each Semi-Annual Period of Participation,
(iii) the class and maximum number of shares purchasable in the aggregate by all Participants on any one purchase date under the Plan and (iv) the class and number of shares and the price per share of the Common Stock subject to each purchase right at the time outstanding under the Plan. Such adjustments shall be designed to preclude the dilution or enlargement of rights and benefits under the Plan.

VII. PURCHASE RIGHTS

An Employee who participates in the Plan for a particular offering period shall have the right to purchase shares of Common Stock, in a series of successive installments during such offering period, upon the terms and conditions set forth below and shall execute a purchase agreement embodying such terms and conditions and such other provisions (not inconsistent with the Plan) as the Plan Administrator may deem advisable.

Purchase Price. Common Stock shall be issuable on each Semi-Annual Purchase Date at a purchase price equal to 85 percent of the lower of (i) the fair market value per share on the Participant's Enrollment Date or (ii) the fair market value per share on the Semi-Annual Purchase Date. Notwithstanding anything in the Plan to the contrary, if the Authorization Date FVM is higher than the fair market value at the beginning of any Offering Period that commenced prior to the Authorization Date, then, with respect to any of such authorized shares available to be issued on Purchase Dates relating to such Offering Period, the Authorization Date FMV shall be used instead of the fair market value on the Enrollment Date for the purposes of clause (i) of the preceding sentence, provided that the Plan Administrator, in its discretion, may waive application of this sentence with respect to the first Purchase Date occurring after the Authorization Date.

Valuation. For purposes of determining the fair market value per share of Common Stock on any relevant date, the following procedures shall be in effect:

(i) If such fair market value is to be determined on any date on or after the date the Common Stock is first registered under Section 12(g) of the Securities Exchange Act of 1934, then the fair market value shall

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be the closing selling price on that date, as officially quoted on the Nasdaq National Market System. If there is no quoted selling price for such date, then the closing selling price on the next preceding day for which there does exist such a quotation shall be determinative of fair market value.

(ii) If such fair market value is to be determined on any date prior to the time of such Section 12(g) registration of the Common Stock, then the fair market value of the Common Stock on such date shall be determined by the Plan Administrator, after taking into account such factors as the Plan Administrator deems appropriate.

Number of Purchasable Shares. The number of shares purchasable per Participant on each Semi-Annual Purchase Date shall be the number of whole shares obtained by dividing the amount collected from the Participant through payroll deductions during the corresponding Semi-Annual Period of Participation by the purchase price in effect for the Semi-Annual Purchase Date. However, no Participant may, during any Semi-Annual Purchase Period, purchase more than 2,000 shares of Common Stock, subject to periodic adjustment under Section VI.B.

Under no circumstances shall purchase rights be granted under the Plan to any Eligible Employee if such individual would, immediately after the grant, own (within the meaning of Code Section 424(d)) or hold outstanding options or other rights to purchase, stock possessing five percent (5%) or more of the total combined voting power or value of all classes of stock of the Company or any of its Corporate Affiliates.

Payment. Payment for the Common Stock purchased under the Plan shall be effected by means of the Participant's authorized payroll deductions. Such deductions shall begin on the first pay day coincident with or immediately following the Participant's Enrollment Date and shall (unless sooner terminated by the Participant) continue through the pay day ending with or immediately prior to the last day of the offering period.

The amounts so collected shall be credited to the Participant's book account under the Plan, but no interest shall be paid on the balance from time to time outstanding in such account. The amounts collected from a Participant may be commingled with the general assets of the Company and may be used for general corporate purposes.

Termination of Purchase Right. The following provisions shall govern the termination of outstanding purchase rights:

(i) A Participant may, at any time prior to the last five (5) business days of the Semi-Annual Period

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of Participation, terminate his/her outstanding purchase right under the Plan by filing the prescribed notification form with the Plan Administrator. No further payroll deductions shall be collected from the Participant with respect to the terminated purchase right, and any payroll deductions collected for the Semi-Annual Period of Participation in which such termination occurs shall, at the Participant's election, be immediately refunded or held for the purchase of shares on the next Semi-Annual Purchase Date. If no such election is made, then such funds shall be refunded as soon as possible after the close of such Semi-Annual Period of Participation.

(ii) The termination of such purchase right shall be irrevocable, and the Participant may not subsequently rejoin the offering period for which such terminated purchase right was granted. In order to resume participation in any subsequent offering period, such individual must re-enroll in the Plan in accordance with Section V.A.

(iii) Should a Participant cease to remain an Eligible Employee while his/her purchase right remains outstanding or should there otherwise occur a change in such individual's employee status so that he/she is no longer an Eligible Employee while holding such purchase right, then such purchase right shall immediately terminate upon such termination of service or change in status and all sums previously collected from the Participant during the Semi-Annual Period of Participation in which the purchase right so terminates shall be promptly refunded to the Participant. However, should the Participant die or become permanently disabled while in service or should the Participant cease employment by reason of a leave of absence, then the Participant (or the person or persons to whom the rights of the deceased Participant under the Plan are transferred by will or the laws of inheritance) shall have the election, exercisable up until the end of the Semi-Annual Period of Participation in which the Participant dies or becomes permanently disabled or in which the leave of absence commences, to (i) withdraw all the funds credited to the Participant's account at the time of his/her cessation of service or at the commencement of such leave or (ii) have such funds held for the purchase of shares of Common Stock at the next Semi-Annual Purchase Date. If no such election is made, then such funds shall automatically be held for the purchase of shares of Common Stock at the next Semi-Annual Purchase Date. In no event, however, shall any further payroll deductions be added to the Participant's account

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following his/her cessation of service or the commencement of such leave. Should the Participant return to active service following a leave of absence, then his/her payroll deductions under the Plan shall automatically resume at the rate in effect at the time the leave began, provided such return to service occurs prior to the end of the offering period in which such leave began. For purpose of the Plan: (i) the Participant shall be considered to remain in service for so long as such Participant remains in the active employ of the Company or one or more other Participating Companies and (ii) the Participant shall be deemed to be permanently disabled if he/she is unable to engage in any substantial gainful employment, by reason of any medically determinable physical or mental impairment expected to result in death or to be of continuous duration of at least twelve (12) months.

Stock Purchase. Shares of Common Stock shall automatically be purchased on behalf of each Participant (other than Participants whose payroll deductions have previously been refunded or set aside for refund in accordance with the "Termination of Purchase Right" provisions above) on each Semi-Annual Purchase Date. The purchase shall be effected by applying each Participant's payroll deductions for the Semi-Annual Period of Participation ending on such Semi-Annual Purchase Date () to the purchase of whole shares of Common Stock (subject to the limitation on the maximum number of purchasable shares set forth above) at the purchase price in effect for such Semi-Annual Period of Participation. Any payroll deductions not applied to such purchase (a) because they are not sufficient to purchase a whole share or (b) by reason of the limitation on the maximum number of shares purchasable by the Participant for that Semi-Annual Period of Participation shall be promptly refunded to the Participant.

Proration of Purchase Rights. Not more than 500,000 shares of Common Stock, subject to periodic adjustment under Section VI.B, may be purchased in the aggregate by all Participants on any one Semi-Annual Purchase Date. Should the total number of shares of Common Stock which are to be purchased pursuant to outstanding purchase rights on any particular date exceed either (i) the maximum limitation on the number of shares purchasable in the aggregate on such date or
(ii) the number of shares then available for issuance under the Plan, the Plan Administrator shall make a pro-rata allocation of the available shares on a uniform and non-discriminatory basis, and the payroll deductions for each Participant, to the extent in excess of the aggregate purchase price payable for the Common Stock pro-rated to such individual, shall be refunded to such Participant.

Rights as Stockholder. A Participant shall have no stockholder rights with respect to the shares subject to his/her

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outstanding purchase right until the shares are actually purchased on the Participant's behalf in accordance with the applicable provisions of the Plan. No adjustments shall be made for dividends, distributions or other rights for which the record date is prior to the date of such purchase.

Assignability. No purchase right granted under the Plan shall be assignable or transferable by the Participant other than by will or by the laws of descent and distribution following the participant's death, and during the Participant's lifetime the purchase right shall be exercisable only by the Participant.

Change in Ownership. Should the Company or its stockholders enter into an agreement to dispose of all or substantially all of the assets or outstanding capital stock of the Company by means of:

(i) a sale, merger or other reorganization in which the Company will not be the surviving corporation (other than a reorganization effected primarily to change the State in which the Company is incorporated), or

(ii) a reverse merger in which the Company is the surviving corporation but in which more than fifty percent (50%) of the Company's outstanding voting stock is transferred to holders different from those who held the stock immediately prior to the reverse merger, then all outstanding purchase rights under the Plan shall automatically be exercised immediately prior to the consummation of such sale, merger, reorganization or reverse merger by applying the payroll deductions of each Participant for the Semi-Annual Period of participation in which such transaction occurs to the purchase of whole shares of Common Stock at eighty-five percent (85%) of the lower of (i) the fair market value of the Common Stock on the Participant's Enrollment Date for the offering period in which such transaction occurs or (ii) the fair market value of the Common Stock immediately prior to the consummation of such transaction. However, the applicable share limitations of Articles VII and VIII shall continue to apply to any such purchase, and the clause (i) amount above shall not, for any Participant whose Enrollment Date for the offering period is other than the start date of such offering period, be less than the fair market value of the Common Stock on such start date.

The Company shall use its best efforts to provide at least ten (10) days' advance written notice of the occurrence of any such sale, merger, reorganization or reverse merger, and

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Participants shall, following the receipt of such notice, have the right to terminate their outstanding purchase rights in accordance with the applicable provisions of this Article VII.

VIII. ACCRUAL LIMITATIONS

A. No Participant shall be entitled to accrue rights to acquire Common Stock pursuant to any purchase right outstanding under this Plan if and to the extent such accrual, when aggregated with (I) rights to purchase Common Stock accrued under any other purchase right outstanding under this Plan and (II) similar rights accrued under other employee stock purchase plans (within the meaning of Section 423 of the Code) of the Company or its Corporate Affiliates, would otherwise permit such Participant to purchase more than $25,000 worth of stock of the Company or any Corporate Affiliate (determined on the basis of the fair market value of such stock on the date or dates such rights are granted to the Participant) for each calendar year such rights are at any time outstanding.

B. For purposes of applying such accrual limitations, the right to acquire Common Stock pursuant to each purchase right outstanding under the Plan shall accrue as follows:

(i) The right to acquire Common Stock under each such purchase right shall accrue in a series of successive semi-annual installments as and when the purchase right first becomes exercisable for each semi-annual installment on the last business day of each Semi-Annual Period of Participation for which the right remains outstanding.

(ii) No right to acquire Common Stock under any outstanding purchase right shall accrue to the extent the Participant has already accrued in the same calendar year the right to acquire $25,000 worth of Common Stock (determined on the basis of the fair market value on the date or dates of grant) pursuant to one or more purchase rights held by the Participant during such calendar year.

(iii) If by reason of such accrual limitations, any purchase right of a Participant does not accrue for a particular Semi-Annual Period of Participation, then the payroll deductions which the Participant made during that Semi-Annual Period of Participation with respect to such purchase right shall be promptly refunded.

C. In the event there is any conflict between the provisions of this Article VIII and one or more provisions of the Plan or any instrument issued thereunder, the provisions of this Article VIII shall be controlling.

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IX. STATUS OF PLAN UNDER FEDERAL TAX LAWS

The Plan is designed to qualify as an employee stock purchase plan under Code Section 423.

X. AMENDMENT AND TERMINATION

A. The Board may amend, alter, suspend, discontinue, or terminate the Plan at any time, including amendments to outstanding options/purchase rights. However, the Board may not, without the approval of the Company's stockholders:

(i) increase the number of shares issuable under the Plan or the maximum number of shares which may be purchased per Participant or in the aggregate during any one Semi-Annual Period of Participation under the Plan, except that the Plan Administrator shall have the authority, exercisable without such stockholder approval, to effect adjustments to the extent necessary to reflect changes in the Company's capital structure pursuant to Section VI.B;

(ii) alter the purchase price formula so as to reduce the purchase price payable for the shares issuable under the Plan; or

(iii) materially increase the benefits accruing to Participants under the Plan or materially modify the requirements for eligibility to participate in the Plan.

B. The Board may elect to terminate any or all outstanding purchase rights at any time. In the event the Plan is terminated, the Board may also elect to terminate outstanding purchase rights either immediately or upon completion of the purchase of shares on the next Semi-Annual Purchase Date, or may elect to permit purchase rights to expire in accordance with their terms (and participation to continue through such expiration dates). If purchase rights are terminated prior to expiration, all funds contributed to the Plan that have not been used to purchase shares shall be returned to the Participants as soon as administratively feasible.

IX. GENERAL PROVISIONS

A. The Plan shall become effective on the designated Effective Date, provided that no offering period shall commence, and no shares of Common Stock shall be issued hereunder, until (i) the Plan shall have been approved by the stockholders and (ii) the Company shall have complied with all applicable requirements of the Securities Act of 1933 (as amended), all applicable listing requirements of any securities exchange on

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which shares of the Common Stock are listed and all other applicable requirements established by law or regulation. In the event such stockholder approval is not obtained, or such Company compliance is not effected, within twelve (12) months after the date on which the Plan is adopted by the Board, the Plan shall terminate and have no further force of effect.

B. All costs and expenses incurred in the administration of the Plan shall be paid by the Company.

C. Neither the action of the Company in establishing the Plan, nor any action taken under the Plan by the Board or the Plan Administrator, nor any provision of the Plan itself shall be construed so as to grant any person the right to remain in the employ of the Company or any of its Corporate Affiliates for any period of specific duration, and such person's employment may be terminated at any time, with or without cause.

D. The provisions of the Plan shall be governed by the laws of the State of California without resort to that State's conflict-of-laws rules.

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EXHIBIT 10.2

SYNOPSYS, INC.

INTERNATIONAL EMPLOYEE STOCK PURCHASE PLAN

(As amended on August 1, 1999, January 11, 2000 and March 8, 2000)

I. PURPOSE

The Synopsys, Inc. International Employee Stock Purchase Plan (the "Plan") is intended to provide Eligible Employees of designated subsidiaries of the Company with the opportunity to acquire a proprietary interest in the Company through the periodic application of their payroll deductions to the purchase of shares of the Company's common stock.

II. DEFINITIONS

For purposes of plan administration, the following terms shall have the meanings indicated:

Base Salary means all compensation paid as wages, salaries, commissions, overtime, and bonuses, but excluding all of the following items (even if included in taxable income): reimbursements, car allowances or other expense allowances, severance pay, fringe benefits (cash and noncash), moving expenses, deferred compensation, income attributable to stock options, restricted stock grants, SARs and other equity-related incentive programs, and welfare benefits.

Code means the Internal Revenue Code of 1986, as amended from time to time.

Company means Synopsys, Inc., a Delaware corporation, and any corporate successor to all or substantially all of the assets or voting stock of Synopsys, Inc. which shall by appropriate action adopt the Plan.

Common Stock means shares of the Company's common stock.

Corporate Affiliate means any company which is a parent or subsidiary corporation of the Company (as determined in accordance with Code Section 424), including any parent or subsidiary corporation which becomes such after the Effective Date.

Effective Date means the first day of the initial offering period scheduled to commence on May 3, 1993. However, for any Subsidiary which becomes a Participating Subsidiary in the Plan after the first day of the initial offering period, a


subsequent Effective Date shall be designated with respect to participation by its Eligible Employees.

Eligible Employee means any person who is engaged, on a regularly-scheduled basis of more than twenty (20) hours per week and more than five (5) months per calendar year, in the rendition of personal services to any Participating Subsidiary for earnings considered wages under Section 3121(a) of the Code, but shall not include persons prohibited by the laws of the nation of their residence or employment from participating in the Plan.

Enrollment Date has the meaning ascribed to it in Section V.A.

Participant means any Eligible Employee of a Participating Subsidiary who is actively participating in the Plan.

Participating Subsidiary means a Subsidiary of the Company that has been designated as a Participating Subsidiary by the Board.

Semi-Annual Entry Date means (i) during 1999 and each preceding calendar year within an offering period in effect under the Plan, the first business day of May and the first business day of November and (ii) during 2000 and all subsequent calendar years within an offering period under the Plan, the first business day of March and the first business day of September. The earliest Semi-Annual Entry Date under the Plan shall be May 3, 1993.

Semi-Annual Period of Participation means each period for which the Participant actually participates in an offering period in effect under the Plan. There shall be a maximum of four (4) periods of participation within each offering period. Except as otherwise designated by the Plan Administrator, each such period shall commence on the applicable Semi-Annual Entry Date.

Semi-Annual Purchase Date means (i) during 1999 and each preceding year on which shares of Common Stock are automatically purchased for Participants under the Plan, the last business day of April and October, and (ii) during 2000 and each subsequent year on which shares of Common Stock are automatically purchased for Participants under the Plan, the last business day of February and August.

Subsidiary shall mean any corporation described in Section 425(e) or (f) of the Code.

III. ADMINISTRATION

The Plan shall be administered by the Board of Directors or a committee that will satisfy Rule 16b-3 of the Securities and Exchange Commission, as in effect with respect to the Company from time to time (in either case, the "Board"). The Board may from time to time select a committee or persons (the "Plan Administrator") to be responsible for any transactions.

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IV. OFFERING PERIODS

The Plan shall be implemented in a series of offering periods. Each offering period shall be of a duration of twenty-four (24) months or less as designated by the Plan Administrator prior to the start date of any offering period, except that offering periods that include the Semi-Annual Entry Date on November 1, 1999 shall be of a duration of twenty-two (22) months. Within each offering period, there shall be a maximum of four (4) Semi-Annual Periods of Participation.

V. ELIGIBILITY AND PARTICIPATION

A. Each Eligible Employee of a Participating Subsidiary shall be eligible to participate in the Plan in accordance with the following provisions:

- The Board may at any time designate one or more Subsidiaries as participating in the Plan. The names of all Participating Subsidiaries shall be shown on Exhibit A to the Plan, which shall be amended from time to time to reflect additions and deletions of Participating Subsidiaries; failure to show a Participating Subsidiary on Exhibit A shall not, however, prevent otherwise eligible employees of that Subsidiary from participating in the Plan. No Subsidiary participating in the Company's Employee Stock Purchase Plan effective May 3, 1993 may be designated for participation in the Plan.

- Each Eligible Employee will be automatically enrolled in the Plan in the offering period that begins on the first Semi-Annual Entry Date following the commencement of employment; thereafter, any Eligible Employee may enroll or re-enroll in the Plan in the offering period that begins as of any Semi-Annual Entry Date, or such other days as may be established by the Board from time to time (each, an "Enrollment Date"). To participate, an Eligible Employee must complete, sign, and submit to the Company an enrollment form prescribed by the Plan Administrator. Any enrollment form received by the Company by the 15th day of the month preceding an Enrollment Date (or by the Enrollment Date in the case of employees hired after such 15th day), or such other date established by the Plan Administrator from time to time, will be effective on that Enrollment Date. Enrollment or re-enrollment by a Participant in the Plan on an Enrollment Date will constitute the grant by the Company to the Participant of an option to purchase shares of Common Stock from the Company under the Plan. At the end of each offering period, each Participant who has not withdrawn from the Plan will automatically be re-enrolled in the Plan in the offering period that begins on the Enrollment Date immediately following the date on which the option

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expires. Furthermore, except as may otherwise be determined by the Plan Administrator, each Participant who has not withdrawn from the Plan will automatically be re-enrolled in the Plan in each offering period that begins on an Enrollment Date on which the fair market value per share of the Company's Common Stock is lower than the fair market value per share of the Company's Common Stock on the Enrollment Date for the offering period in which the Participant is then enrolled. Notwithstanding anything in the Plan to the contrary, if the fair market value (the "Authorization Date FVM") on the date (the "Authorization Date") on which additional shares of Common Stock are authorized for issuance hereunder by the Company's shareholders is higher than the fair market value at the beginning of any Offering Period that commenced prior to the Authorization Date, then, with respect to any of such authorized shares available to be issued on Purchase Dates relating to such Offering Period, the Authorization Date FMV shall be used instead of the fair market value on the Enrollment Date for the purposes of the preceding sentence, provided that the Plan Administrator, in its discretion, may waive application of this sentence with respect to the first Purchase Date occurring after the Authorization Date.

- An individual who becomes an Eligible Employee immediately following termination of such employee's participation in the Synopsys, Inc. Employee Stock Purchase Plan shall, for purposes of participation in the Plan, have a deemed Enrollment Date corresponding to such employee's most recent Enrollment Date under the Synopsys, Inc. Employee Stock Purchase Plan.

B. The payroll deduction authorized by the Participant for purposes of acquiring shares of Common Stock under the Plan may be zero percent (0%) or any whole multiple of one percent (1%) of the Base Salary paid to the Participant during each Semi-Annual Period of Participation within the offering period, up to a maximum of ten percent (10%). The deduction rate so authorized shall continue in effect for the entire Semi-Annual Period of Participation and for each successive Semi-Annual Period of Participation unless (i) the Participant shall change the rate for a subsequent Semi-Annual Period of Participation by filing the appropriate form with the Plan Administrator prior to the commencement of that Semi-Annual Period of Participation or (ii) the Participant shall change the rate within a Semi-Annual Period of Participation by filing the appropriate form with the Plan Administrator. The new rate shall become effective as soon as practicable following the filing of such form. A Participant may not increase or decrease the deduction rate more than once per Semi-Annual Period of Participation in addition to fixing the rate at the beginning of

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the Semi-Annual Period of Participation. Payroll deductions, however, will automatically cease upon the termination of the Participant's purchase right in accordance with Article VII below.

C. In no event may any Participant's payroll deductions for any one Semi-Annual Period of Participation exceed Seven Thousand Five Hundred Dollars ($7,500.00) calculated on the Purchase Date following conversion of accumulated withholdings into U.S. Dollars.

D. It is intended that all eligible employees shall have substantially equivalent rights and privileges with respect to the Plan; notwithstanding any other provision of the Plan, however, the Plan Administrator may make such changes in the terms of eligibility and participation from Subsidiary to Subsidiary that it determines, in its discretion, to be necessary or desirable to reflect or comply with local laws or conditions.

VI. STOCK SUBJECT TO PLAN

A. The Common Stock purchasable by Participants under the Plan shall, solely in the discretion of the Plan Administrator, be made available from either authorized but unissued shares of the Common Stock or from shares of Common Stock reacquired by the Company, including shares of Common Stock purchased on the open market. The total number of shares which may be issued under the Plan shall not exceed 5,850,000 shares, less any shares sold under the Synopsys, Inc. Employee Stock Purchase Plan (subject to adjustment under Section
VI.B below).

B. In the event any change is made to the Company's outstanding Common Stock by reason of any stock dividend, stock split, combination of shares or other change affecting such outstanding Common Stock as a class without receipt of consideration, then appropriate adjustments shall be made by the Plan Administrator to (i) the class and maximum number of shares issuable over the term of the Plan, (ii) the class and maximum number of shares purchasable per Participant during each Semi-Annual Period of Participation, (iii) the class and maximum number of shares purchasable in the aggregate by all Participants on any one purchase date under the Plan and (iv) the class and number of shares and the price per share of the Common Stock subject to each purchase right at the time outstanding under the Plan. Such adjustments shall be designed to preclude the dilution or enlargement of rights and benefits under the Plan.

VII. PURCHASE RIGHTS

An Employee who participates in the Plan for a particular offering period shall have the right to purchase shares of Common Stock, in a series of successive installments during such offering period, upon the terms and conditions set forth below and shall execute such agreements and documents embodying such terms and conditions and such other provisions

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(not inconsistent with the Plan) as the Plan Administrator may deem advisable.

Purchase Price. Common Stock shall be issuable on each Semi-Annual Purchase Date at a purchase price equal to eighty-five percent (85%) of the lower of (i) the fair market value per share on the Participant's Enrollment Date or (ii) the fair market value per share on the Semi-Annual Purchase Date. Notwithstanding anything in the Plan to the contrary, if the Authorization Date FVM is higher than the fair market value at the beginning of any Offering Period that commenced prior to the Authorization Date, then, with respect to any of such authorized shares available to be issued on Purchase Dates relating to such Offering Period, the Authorization Date FMV shall be used instead of the fair market value on the Enrollment Date for the purposes of clause (i) of the preceding sentence, provided that the Plan Administrator, in its discretion, may waive application of this sentence with respect to the first Purchase Date occurring after the Authorization Date.

Valuation. The fair market value per share of Common Stock on any relevant date shall be the closing selling price of the Common Stock on that date, as officially quoted on the Nasdaq National Market System. If there is no quoted selling price for such date, then the closing selling price on the next preceding day for which there does exist such a quotation shall be determinative of fair market value.

Number of Purchasable Shares. The number of shares purchasable per Participant on each Semi-Annual Purchase Date shall be the number of whole shares obtained by dividing the amount collected, after conversion into U.S. Dollars on the Purchase Date, from the Participant through payroll deductions during the corresponding Semi-Annual Period of Participation by the purchase price in effect for the Semi-Annual Purchase Date. However, no Participant may, during any one Semi-Annual Purchase Period, purchase more than 2,000 shares of Common Stock, subject to periodic adjustment under Section VI.B.

Under no circumstances shall purchase rights be granted under the Plan to any Eligible Employee if such individual would, immediately after the grant, own (within the meaning of Code Section 424(d)) or hold outstanding options or other rights to purchase, stock possessing five percent (5%) or more of the total combined voting power or value of all classes of stock of the Company or any of its Corporate Affiliates.

Payment; Withholding. Payment for the Common Stock purchased under the Plan shall be effected by means of the Participant's authorized payroll deductions. Such deductions shall begin on the first pay day coincident with or immediately

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following the Participant's Enrollment Date into the offering period and shall (unless sooner terminated by the Participant) continue through the pay day ending with or immediately prior to the last day of the offering period. The amounts so collected shall be credited to the Participant's book account under the Plan in local currency, but no interest shall be paid on the balance from time to time outstanding in such account. The amounts collected from a Participant may be commingled with the general assets of the Company and/or any Participating Subsidiary and may be used for general corporate purposes. Upon disposition of shares acquired by exercise of purchase right, the Participant shall pay, or make provision adequate to the Company and the Participating Subsidiary for payment of, all federal, state, and other tax (and similar) withholdings that the Company or the Participating Subsidiary determines, in its discretion, are required due to the disposition, including any such withholding that the Company or the Participating Subsidiary determines, in its discretion, is necessary to allow the Company or the Participating Subsidiary to claim tax deductions or other benefits in connection with the disposition. A Participant shall make such similar provisions for payment that the Company or the Participating Subsidiary determines, in its discretion, are required due to the exercise of purchase right, including such provisions as are necessary to allow the Company or the Participating Subsidiary to claim tax deductions or other benefits in connection with the exercise of purchase right.

Termination of Purchase Right. The following provisions shall govern the termination of outstanding purchase rights:

(i) A Participant may, at any time prior to the last five (5) business days of the Semi-Annual Period of Participation, terminate his/her outstanding purchase right under the Plan by filing the prescribed notification form with the Plan Administrator. No further payroll deductions shall be collected from the Participant with respect to the terminated purchase right, and any payroll deductions collected for the Semi-Annual Period of Participation in which such termination occurs shall, at the Participant's election, be immediately refunded or held for the purchase of shares on the next Semi-Annual Purchase Date. If no such election is made, then such funds shall be refunded as soon as possible after the close of such Semi-Annual Period of Participation.

(ii) The termination of such purchase right shall be irrevocable, and the Participant may not subsequently rejoin the offering period for which such terminated purchase right was granted. In order to resume participation in any

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subsequent offering period, such individual must enroll in the Plan in accordance with Section V.A.

(iii) Should a Participant cease to remain an Eligible Employee while his/her purchase right remains outstanding or should there otherwise occur a change in such individual's employee status so that he/she is no longer an Eligible Employee while holding such purchase right, then such purchase right shall immediately terminate upon such termination of service or change in status and all sums previously collected from the Participant during the Semi-Annual Period of Participation in which the purchase right so terminates shall be promptly refunded to the Participant. However, should the Participant die or become permanently disabled while in service or should the Participant cease employment by reason of a leave of absence, then the Participant (or the person or persons to whom the rights of the deceased Participant under the Plan are transferred by will or the laws of inheritance) shall have the election, exercisable up until the end of the Semi-Annual Period of Participation in which the Participant dies or becomes permanently disabled or in which the leave of absence commences, to (i) withdraw all the funds credited to the Participant's account at the time of his/her cessation of service or at the commencement of such leave or (ii) have such funds held for the purchase of shares of Common Stock at the next Semi-Annual Purchase Date. If no such election is made, then such funds shall automatically be held for the purchase of shares of Common Stock at the next Semi-Annual Purchase Date. In no event, however, shall any further payroll deductions be added to the Participant's account following his/her cessation of service or the commencement of such leave; provided, however, that if a Participant's employment is terminated because of a transfer of employment to the Company or any subsidiary of the Company other than a Participating Subsidiary, any outstanding purchase right shall not terminate until the occurrence of the earlier of (x) the last Semi-Annual Purchase Date in the offering period or (y) enrollment of the Participant in the Company's Employee Stock Purchase Plan. While a purchase right remains outstanding, the Company or other subsidiary to which the participant is transferred shall effect payroll deductions authorized by the Participant and shall remit them to the Participating Subsidiary that employed the Participant at the time of the transfer for purposes of acquiring shares of Common Stock under the Plan. Following

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approval by the Company and the Participating Subsidiary, the Participant may, in lieu of payroll deduction, pay a corresponding amount to the Participating Subsidiary if such amount is received on or before the relevant Purchase Date. Should the Participant return to active service following a leave of absence, then his/her payroll deductions under the Plan shall automatically resume at the rate in effect at the time the leave began, provided such return to service occurs prior to the end of the offering period in which such leave began. For purpose of the Plan: (i) the Participant shall be considered to remain in service for so long as such Participant remains in the active employ of the Company or one or more other Participating Subsidiaries and (ii) the Participant shall be deemed to be permanently disabled if he/she is unable to engage in any substantial gainful employment, by reason of any medically determinable physical or mental impairment expected to result in death or to be of continuous duration of at least twelve (12) months.

Stock Purchase. Shares of Common Stock shall automatically be purchased on behalf of each Participant (other than Participants whose payroll deductions have previously been refunded or set aside for refund in accordance with the Termination of Purchase Right provisions above) on each Semi-Annual Purchase Date. The purchase shall be effected by applying each Participant's payroll deductions after conversion to U.S. Dollars for the Semi-Annual Period of Participation ending on such semiannual Purchase Date to the purchase of whole shares of Common Stock (subject to the limitation on the maximum number of purchasable shares as set forth above) at the purchase price in effect for such Semi-Annual Period of Participation. Any payroll deductions not applied to such purchase (a) because they are not sufficient to purchase a whole share or (b) by reason of the limitation on the maximum number of shares purchasable by the Participant for that Semi-Annual Period of Participation shall be promptly refunded to the Participant.

Proration of Purchase Rights. Not more than 500,000 shares of Common Stock, subject to periodic adjustment under Section VI.B, may be purchased in the aggregate by all participants under the Plan and under the Synopsys, Inc. Employee Stock Purchase Plan on any one Semi-Annual Purchase Date. Should the total number of shares of Common Stock which are to be purchased pursuant to outstanding purchase rights on any particular date exceed either (i) the maximum limitation on the number of shares purchasable in the aggregate on such date or
(ii) the number of shares then available for issuance under the Plan and the Synopsys, Inc. Employee Stock Purchase Plan, the Plan Administrator shall make a pro-rata allocation of the

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available shares on a uniform and non-discriminatory basis (including, to the extent practicable vis a vis participants in the Synopsys, Inc. Employee Stock Purchase Plan) and the payroll deductions for each Participant, to the extent in excess of the aggregate purchase price payable for the Common Stock pro-rated to such individual, shall be refunded to such Participant.

Rights as Stockholder. A Participant shall have no stockholder rights with respect to the shares subject to his/her outstanding purchase right until the shares are actually purchased on the Participant's behalf in accordance; with the applicable provisions of the Plan. No adjustments shall be made for dividends, distributions, or other rights for which the record date is prior to the date of such purchase.

Assignability. No purchase right granted under the Plan shall be assignable or transferable by the Participant other than by will or by the laws of descent and distribution following the Participant's death, and during the Participant's lifetime the purchase right shall be exercisable only by the Participant.

Change in Ownership. Should the Company or its stockholders enter into an agreement to dispose of all or substantially all of the assets or outstanding capital stock of the Company by means of:

(i) a sale, merger or other reorganization in which the Company will not be the surviving corporation (other than a reorganization effected primarily to change the State in which the Company is incorporated), or

(ii) a reverse merger in which the Company is the surviving corporation but in which more than fifty percent (50%) of the Company's outstanding voting stock is transferred to holders different from those who held the stock immediately prior to the reverse merger,

then all outstanding purchase rights under the Plan shall automatically be exercised immediately prior to the consummation of such sale, merger, reorganization or reverse merger by applying the payroll deductions of each Participant, after conversion into U.S. Dollars on the date of purchase, for the Semi-Annual Period of Participation in which such transaction occurs to the purchase of whole shares of Common Stock at eighty-five percent (85%) of the lower of (i) the fair market value of the Common Stock on the Participant's Enrollment Date into the offering period in which such transaction occurs or
(ii) the fair market value of the Common Stock immediately prior to the consummation of such transaction. However, the applicable share limitations of Sections VII and VIII shall continue to apply to any such purchase, and the clause (i) amount above shall not, for any Participant whose Enrollment Date for the offering period is

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other than the start date of such offering period, be less than the fair market value of the Common Stock on such start date.

The Company shall use its best efforts to provide at least ten (10) days' advance written notice of the occurrence of any such sale, merger, reorganization or reverse merger, and Participants shall, following the receipt of such notice, have the right to terminate their outstanding purchase rights in accordance with the applicable provisions of this Article VII.

VIII. ACCRUAL LIMITATIONS

A. No Participant shall be entitled to accrue rights to acquire Common Stock pursuant to any purchase right outstanding under this Plan if and to the extent such accrual, when aggregated with (i) rights to purchase Common Stock accrued under any other purchase right outstanding under this Plan and (ii) similar rights accrued under other employee stock purchase plans (within the meaning of Section 423 of the Code) of the Company and its Corporate Affiliates would otherwise permit such Participant to purchase more than $25,000 worth of stock of the Company or any Corporate Affiliate (determined on the basis of the fair market value of such stock on the date or dates such rights are granted to the Participant) for each calendar year such rights are at any time outstanding.

B. For purposes of applying such accrual limitations, the right to acquire Common Stock pursuant to each purchase right outstanding under the Plan shall accrue as follows:

(i) The right to acquire Common Stock under each such purchase right shall accrue in a series of successive semi-annual installments as and when the purchase right first becomes exercisable for each semi-annual installment on the last business day of each Semi-Annual Period of Participation for which the right remains outstanding.

(ii) No right to acquire Common Stock under any outstanding purchase right shall accrue to the extent the Participant has already accrued in the same calendar year the right to acquire $25,000 worth of Common Stock (determined on the basis of the fair market value on the date or dates of grant) pursuant to one or more purchase rights held by the Participant during such calendar year.

(iii) If by reason of such accrual limitations, any purchase right of a Participant does not accrue for a particular Semi-Annual Period of Participation, then the payroll deductions which the Participant made during that

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Semi-Annual Period of Participation with respect to such purchase right shall be promptly refunded.

C. In the event there is any conflict between the provisions of this
Section VIII and one or more provisions of the Plan or any instrument issued thereunder, the provisions of this Section VIII shall be controlling.

IX. AMENDMENT AND TERMINATION

A. The Board may amend, alter, suspend, discontinue, or terminate the Plan at any time, including amendments to outstanding options/purchase rights. However, the Board may not, without the approval of the Company's stockholders:

(i) increase the number of shares issuable under the Plan or the maximum number of shares which may be purchased per Participant or in the aggregate during any one Semi-Annual Period of Participation under the Plan, except that the Plan Administrator shall have the authority, exercisable without such stockholder approval, to effect adjustments to the extent necessary to reflect changes in the Company's capital structure pursuant to Section VI.B;

(ii) alter the purchase price formula so as to reduce the purchase price payable for the shares issuable under the Plan; or

(iii) materially increase the benefits accruing to Participants under the Plan or materially modify the requirements for eligibility to participate in the Plan.

B. The Board may elect to terminate any or all outstanding purchase rights at any time. In the event the Plan is terminated, the Board may also elect to terminate outstanding purchase rights either immediately or upon completion of the purchase of shares on the next Semi-Annual Purchase Date, or may elect to permit purchase rights to expire in accordance with their terms (and participation to continue through such expiration dates). If purchase rights are terminated prior to expiration, all funds contributed to the Plan that have not been used to purchase shares shall be returned to the Participants as soon as administratively feasible.

X. GENERAL PROVISIONS

A. The Plan shall become effective on the date on which it is adopted by the Board, provided the Company has complied with all applicable requirements established by law or regulation.

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B. All costs and expenses incurred in the administration of the Plan shall be paid by the Company.

C. Neither the action of the Company in establishing the Plan, nor any action taken under the Plan by the Board or the Plan Administrator, nor any provision of the Plan itself shall be construed so as to grant any person the right to remain in the employ of the Company or any of its Corporate Affiliates for any period of specific duration, and such person's employment may be terminated at any time, with or without cause.

D. The provisions of the Plan shall be governed by the laws of the State of California without resort to that State's conflict-of-laws rules.

E. If the Plan Administrator in its discretion so elects, it may retain a brokerage firm, bank, or other financial institution to assist in the purchase of shares, delivery of reports, or other administrative aspects of the Plan. If the Plan Administrator so elects, each Participant shall (unless prohibited by the laws of the nation of his or her employment or residence) be deemed upon enrollment in the Plan to have authorized the establishment of an account on his or her behalf at such institution. Shares purchased by a Participant under the Plan shall be held in the account in the name in which the share certificate would otherwise be issued pursuant to Section VII.

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Schedule A

Companies Participating in
International Employee Stock Purchase
Plan

Name                                               Jurisdiction of Incorporation
----                                               -----------------------------
Electronic Design Automation Services Europe                         Netherlands
Nihon Synopsys Co., Ltd.                                                   Japan
Synopsys Consulting SARL                                                  France
Synopsys Finland OY                                                      Finland
Synopsys GmbH                                                            Germany
Synopsys (India) Pvte. Ltd.                                                India
Synopsys International, Inc.                                            Barbados
Synopsys International Limited                                           Ireland
Synopsys Ireland Limited                                                 Ireland
Synopsys Ireland Resources                                               Ireland
Synopsys Italia, SRL                                                       Italy
Synopsys Korea, Inc.                                                       Korea
Synopsys (Northern Europe) Ltd.                                   United Kingdom
Synopsys SARL                                                             France
Synopsys Scandinavia AB                                                   Sweden
Synopsys Services SARL                                                    France
Synopsys Singapore Pte. Ltd.                                           Singapore
Synthesis and Optimisation Systems Ltd.                                   Israel
The CAE Company                                                      Netherlands
Viewlogic Asia Corporation                                                U.S.A.
Viewlogic Benelux                                                    Netherlands
Viewlogic Europe BV                                                  Netherlands

-14-

EXHIBIT 23.1

CONSENT OF INDEPENDENT AUDITORS

The Board of Directors
Synopsys, Inc.

We consent to incorporation herein of our reports dated October 23, 1999 relating to the consolidated balance sheets of Synopsys, Inc. and subsidiaries as of September 30, 1999 and 1998, and the related consolidated statements of income, stockholders' equity and cash flows for each of the years in the three-year period ended September 30, 1999, and the related consolidated financial statement schedule, which reports appear in the September 30, 1999, annual report on Form 10-K of Synopsys, Inc.

KPMG LLP

Mountain View, California

June 2, 2000