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                                                                     EXHIBIT 3.1

                   STATEMENT OF THE RIGHTS AND PREFERENCES OF
                     SERIES D CONVERTIBLE PREFERRED STOCK OF
                             CAYENNE SOFTWARE, INC.


         Section 1. DESIGNATION, AMOUNT AND PAR VALUE. The series of preferred
stock shall be designated as the Series D Convertible Preferred Stock (the
"Preferred Stock"), and the number of shares so designated shall be 300,000
(which shall not be subject to increase without the written consent of the
holders thereof). Each share of Preferred Stock shall have a par value of $1.00
per share and a stated value of $20.00 per share (the "Stated Value").

         Section 2. DIVIDENDS.

         A. Holders of Preferred Stock (the "Holders") shall be entitled to
receive, when and as declared by the Board of Directors of the Company (the
"Board of Directors") out of funds legally available therefor, and the Company
shall pay, cumulative dividends at the rate per share (as a percentage of the
Stated Value per share) equal to 5% per annum, payable, at the Company's option,
in cash or shares of Common Stock, in arrears at such time as the Company shall
determine, but in no event later than the Conversion Date (as hereinafter
defined). Dividends on the Preferred Stock shall accrue daily commencing the
Original Issue Date (as defined in Section 7), and shall be deemed to accrue on
such date whether or not earned or declared and whether or not there are
profits, surplus or other funds of the Company legally available for the payment
of dividends. The party that holds the Preferred Stock on an applicable record
date for any dividend payment will be entitled to receive such dividend payment
and any other accrued and unpaid dividends which accrued prior to such dividend
payment date, without regard to any sale or disposition of such Preferred Stock
subsequent to the applicable record date but prior to the applicable dividend
payment date. Except as otherwise provided herein, if at any time the Company
pays less than the total amount of dividends then accrued on account of the
Preferred Stock, such payment shall be distributed ratably among the holders of
the Preferred Stock based upon the number of shares held by each holder. Payment
of dividends on the Preferred Stock is further subject to the provisions of
Section 5(c)(iv).

         B. Notwithstanding anything to the contrary contained herein, the
Company may not issue shares of Common Stock in payment of dividends on the
Preferred Stock if:

                  1. the number of shares of Common Stock at the time 
authorized, unissued and unreserved for all purposes, or held as treasury stock,
is insufficient to issue such dividends in shares of Common Stock;

                  2. the shares of Common Stock to be issued in respect of such 
dividends are not registered for resale pursuant to an effective registration
statement that names the recipient of such dividend as a selling stockholder
thereunder; or
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                  3. the shares of Common Stock to be issued in respect of such
dividends are not listed on the Nasdaq National Market, and any other exchange
on which the Common Stock is then listed for trading.

         C. So long as any Preferred Stock shall remain outstanding, neither the
Company nor any subsidiary thereof shall without the prior written consent of
all the Holders redeem, purchase or otherwise acquire directly or indirectly any
Junior Securities (as defined in Section 7), nor shall the Company directly or
indirectly pay or declare any dividend or make any distribution (other than a
dividend or distribution described in Section 5) upon, nor shall any
distribution be made in respect of, any Junior Securities, nor shall any monies
be set aside for or applied to the purchase or redemption (through a sinking
fund or otherwise) of any Junior Securities unless all dividends on the
Preferred Stock for all past dividend periods shall have been paid.

         Section 1. VOTING RIGHTS. Except as otherwise provided herein and as
otherwise required by law, each holder of Preferred Stock shall be entitled to
vote on all matters submitted to the shareholders of the Corporation for their
consideration and shall be entitled to cast that number of votes equal to the
largest number of whole shares of Common Stock into which such holder's shares
of Preferred Stock could be converted, pursuant to the provisions of Section 5
hereof, at the record date for the determination of shareholders entitled to
vote on such matter. Except as otherwise required by law or expressly provided
herein, the holders of shares of Preferred Stock, Series A Preferred Stock,
Series B Preferred Stock, Series C Preferred Stock and Common Stock shall vote
together as a single class on all matters submitted to the shareholders of the
Corporation for their consideration. So long as any shares of Preferred Stock
are outstanding, the Company shall not, without the affirmative vote of the
holders of a majority of the shares of the Preferred Stock then outstanding,
alter or change adversely the powers, preferences or rights given to the
Preferred Stock or authorize or create any class of stock ranking as to
dividends or distribution of assets upon a Liquidation (as defined in Section 4)
senior to, prior to or pari passu with the Preferred Stock.

         Section 2. LIQUIDATION. Upon any liquidation, dissolution or winding-up
of the Company, whether voluntary or involuntary (a "Liquidation"), the holders
of Preferred Stock shall be entitled to receive out of the assets of the
Company, whether such assets are capital or surplus, for each share of Preferred
Stock an amount equal to the Stated Value plus all accrued but unpaid dividends
per share, whether declared or not, before any distribution or payment shall be
made to the holders of any Junior Securities, and if the assets of the Company
shall be insufficient to pay in full such amounts, then the entire assets to be
distributed shall be distributed among the holders of Preferred Stock ratably in
accordance with the respective amounts that would be payable on such shares if
all amounts payable thereon were paid in full. A sale, conveyance or disposition
of all or substantially all of the assets of the Company or the effectuation by
the Company of a transaction or series of related transactions in which more
than 50% of the voting power of the Company is disposed of, or a consolidation
or merger of the Company with or into any other company or companies shall not
be treated as a Liquidation, but instead shall be subject to the provisions of
Section 5. The Company shall mail written notice of any such Liquidation, not
less than 45 days prior to the payment date stated therein, to each record
holder of Preferred Stock but after public disclosure of the event.
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         Section 3. CONVERSION.

         D.(i) Each share of Preferred Stock shall be convertible into shares of
Common Stock (subject to reduction pursuant to Sections 5(a)(iii) and 5(a)(iv),
at the Conversion Ratio (as defined in Section 7) at the option of the holder in
whole or in part at any time after the Original Issue Date. The holder shall
effect conversions by giving the form of conversion notice attached hereto as
Exhibit A (the "Holder Conversion Notice"), with prompt delivery thereafter of
the certificate or certificates for the Preferred Stock being converted. Each
Holder Conversion Notice shall specify the number of shares of Preferred Stock
to be converted and the date on which such conversion is to be effected, which
date may not be prior to the date the holder delivers such Holder Conversion
Notice by facsimile (the "Holder Conversion Date"). If no Holder Conversion Date
is specified in a Holder Conversion Notice, the Holder Conversion Date shall be
the date that the Holder Conversion Notice is deemed delivered pursuant to
Section 5(h). Subject to Sections 5(b), 5(a)(iii) and 5(a)(iv), each Holder
Conversion Notice, once given, shall be irrevocable. If the holder is converting
less than all shares of Preferred Stock represented by the certificate or
certificates tendered by the holder with the Holder Conversion Notice, the
Company shall within three (3) business days deliver to such holder a
certificate for such number of shares of Preferred Stock as have not been
converted. A Holder Conversion Notice shall not be effective unless and until
the Holder has satisfied all pre-conditions to conversion applicable to that
Holder under the provisions of the Purchase Agreement relating to the original
issue of the shares to be converted.

               (ii) Subject to the conditions set forth in this 
Section 5(a)(ii), all outstanding and unconverted shares of Preferred Stock may
be converted, at the option of the Company, into shares of Common Stock (subject
to reduction pursuant to Sections 5(a)(iii) and 5(a)(iv)) at the Conversion
Ratio on or after the second anniversary of the date on which the Underlying
Securities Registration Statement (as defined in Section 7) has been declared
effective by the Securities and Exchange Commission (the "Commission"),
provided, that at all times from the date of the Company Conversion Notice (as
defined below) to the Company Conversion Date ( as defined below) such
Underlying Securities Registration Statement is effective and the Underlying
Shares (as defined in Section 7) are listed on the Nasdaq National Market or
Nasdaq SmallCap Market and each other securities exchange or market on which the
Common Stock is then listed. The conversion date for any conversion pursuant to
this Section 5(a)(ii) (the "Company Conversion Date") shall be not earlier than
20 days nor later than 5 days prior to the date on which the Company shall
deliver to the holders of such outstanding and unconverted shares of Preferred
Stock a notice of such conversion in the form attached hereto as Exhibit B (the
"Company Conversion Notice"). A Holder Conversion Date and a Company Conversion
Date are sometimes collectively referred to herein as the "Conversion Date" and
a Holder Conversion Notice and a Company Conversion Notice are sometimes
collectively referred to as a "Conversion Notice." Any conversion pursuant to
this Section 5(a)(ii) shall be subject to Section 5(b) with respect to
consequences of the Company's failure to deliver shares of Common Stock in
respect of a conversion under this Section and to Sections 5(a)(iii) and
5(a)(iv). Nothing in this paragraph shall be construed to alter or restrict the
right of any Holder to convert any share of Preferred Stock at any time.
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               (iii) Certain Regulatory Approval. If on the Conversion Date
applicable to any conversion under this Section 5(a), (A) the Common Stock is
then listed for trading on the Nasdaq National Market or the American Stock
Exchange or if the rules of the Nasdaq Stock Market are hereafter amended to
extend Rule 4460(i) promulgated thereby (or any successor or replacement
provision thereof) to the Nasdaq SmallCap Market and the Common Stock is then
listed for trading on such market and (B) the Conversion Price then in effect is
such that the aggregate number of shares of Common Stock that would then be
issuable upon conversion of all shares of Preferred Stock submitted for
conversion on that Conversion Date, together with any shares of Common Stock
previously issued upon conversion of Preferred Stock and exercise of any warrant
issued in connection with issue of the Preferred Stock, would equal or exceed
20% of the number of shares of Common Stock outstanding on the Original Issue
Date (the "Issuable Maximum"), and the Company has not previously obtained
"Shareholder Approval" (as defined below), then the Company shall issue to the
converting Holder of the Preferred Stock an amount of shares of Common Stock
equal to the Issuable Maximum, such amount to be calculated based on each
Holder's percentage of total number of Preferred Shares outstanding on the
Original Issue Date, and, with respect to any shares of Common Stock that would
be issuable to such Holder in respect of the Conversion Notice at issue in
excess of the Issuable Maximum, the converting Holder shall have the option to
require the Company, either (1) as promptly as possible, but in no event later
than 60 days after such Conversion Date, to convene a meeting of the holders of
the Common Stock and obtain the Shareholder Approval or (2) to redeem, from
funds legally available therefor at the time of such redemption, the balance of
the Preferred Stock subject to such Conversion Notice at a price per share equal
to the product of (i) the average Per Share Market Value for the ten (10)
Trading Days immediately preceding (1) the Conversion Date or (2) the date of
payment in full by the Company of such redemption price, whichever is greater,
and (ii) the Conversion Ratio calculated on (1) the Conversion Date or (2)
calculated as if the Conversion Date (for purposes of determining the Conversion
Price) were the date of payment by the Company of such redemption price,
whichever date yields a lower Conversion Price denominator for the determination
of the Conversion Ratio; provided, however, that if the Holder shall elect to
require the Company to obtain Shareholder Approval under paragraph (1) above and
the Company fails for any reason to obtain such Shareholder Approval within the
time period set forth in (1) above, the Company shall be obligated to redeem the
Preferred Stock not converted as a result of the provisions of this Section in
accordance with the provisions of paragraph (2) above, and in such case the
interest contemplated by the immediately succeeding sentence shall be deemed to
accrue from the Conversion Date. If the Company fails for any reason to pay the
redemption price under (2) above within seven days after the Conversion Date,
the Company will pay interest on such redemption price at a rate of 0.2% per day
to the converting holder of Preferred Stock, accruing from the Conversion Date
until the redemption price plus any accrued interest thereon is paid in full.
The entire redemption price, including interest thereon, shall be paid in cash.
"Shareholder Approval" means the approval by a majority of the total votes cast
on the proposal, in person or by proxy, at a meeting of the shareholders of the
Company held in accordance with the Company's Articles of Organization and
by-laws, of the issuance by the Company of shares of Common Stock exceeding the
Issuable Maximum as a consequence of the conversion of Preferred Stock into
Common Stock or the exercise of Warrants to purchase Common Stock at a price
less than the greater of the book or market value on the Original Issue Date as
and to the extent required pursuant to Rule 4460(i) of the Nasdaq Stock Market
or Rule
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713 of the American Stock Exchange (or any successor or replacement provision
thereof), as applicable.

               (iv) If on any Conversion Date, within one year after the
Original Issue Date, applicable to a conversion under Section 5(a), the average
Per Share Market Value for the ten Trading Days immediately preceding the date
of the applicable notice of conversion exceeds the Initial Conversion Price
(defined in Section 5(c)(i)) by more than 50%, the Conversion Price otherwise
applicable to such conversion or repayment shall be increased by an amount equal
to 50% of the difference between (A) the average Per Share Market Value for the
ten Trading Days immediately preceding such notice date, and (B) 150% of the
Initial Conversion Price. In the event that any increase may be required by this
paragraph, the Company will give the Holder notice by telephone, confirmed
promptly in writing, before effecting the Conversion.

         E. Not later than three Trading Days after the Conversion Date, the
Company will deliver to the Holder (i) a certificate or certificates which shall
be free of restrictive legends and trading restrictions (other than those then
required by law and as set forth in the Purchase Agreement) representing the
number of shares of Common Stock being acquired upon the conversion of shares of
Preferred Stock (subject to reduction pursuant to Section 5(a)(iii)) and (ii)
one or more certificates representing the number of shares of Preferred Stock
not converted; provided, however, that the Company shall not be obligated to
issue certificates evidencing the shares of Common Stock issuable upon
conversion of any shares of Preferred Stock until certificates evidencing such
shares of Preferred Stock are either delivered for conversion to the Company or
any transfer agent for the Preferred Stock or Common Stock, or the holder of
such Preferred Stock notifies the Company that such certificates have been lost,
stolen or destroyed and provides a bond (or other adequate security reasonably
acceptable to the Company) reasonably satisfactory to the Company to indemnify
the Company from any loss incurred by it in connection therewith. The Company
shall, upon request of the holder of the Preferred Stock, use its best efforts
to deliver any certificate or certificates required to be delivered by the
Company under this Section. If such certificate or certificates are not
delivered by the date required under this Section 5(b), the holder shall be
entitled by written notice to the Company at any time on or before its receipt
of such certificate or certificates thereafter, to rescind such conversion, in
which event the Company shall immediately return the certificates representing
the shares of Preferred Stock tendered for conversion. If the Company fails to
deliver to the Holder such certificate or certificates pursuant to this Section,
including for purposes hereof, any shares of Common Stock to be issued on the
Conversion Date on account of accrued but unpaid dividends hereunder, by the
seventh Trading Day after the Conversion Date, the Company shall pay to such
holder, in cash, $1,500 for each such Subsequent Trading Day after the
Conversion Date until such certificates are delivered, which amount may be
applied as a reduction of any other amount then or thereafter owed by the
Company to the Holder as a result of its failure to deliver. If the Company
fails to deliver to the Holder such certificate or certificates pursuant to this
Section prior to the 30th day after the Conversion Date, the Company shall, at
the Holder's option (i) redeem, from funds legally available therefor at the
time of such redemption, such number of shares of Preferred Stock then held by
such Holder, as requested by such Holder, and (ii) pay all accrued but unpaid
dividends on account of the Preferred Stock for which the Company shall have
failed to issue Common Stock certificates hereunder, in cash. The redemption
price per share shall be equal to the product of
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(A) the average Per Share Market Value for the ten (10) Trading Days immediately
preceding (1) the Conversion Date or (2) the date of payment in full by the
Company of such redemption price, whichever is greater, and (ii) the Conversion
Ratio calculated on (1) the Conversion Date or (2) calculated as if the
Conversion Date (for purposes of determining the Conversion Price) were the date
of payment by the Company of such redemption price, whichever date yields a
lower Conversion Price denominator for the determination of the Conversion
Ratio. If the Holder has requested that the Company redeem shares of Preferred
Stock pursuant to this Section and the Company fails for any reason to pay the
redemption price under (2) above within seven days after such notice, the
Company will pay interest on the redemption price at a rate of 0.2% per day, in
cash to such Holder, accruing from such seventh day until the redemption price
and any accrued interest thereon is paid in full.

         F.(i) The conversion price for each share of Preferred Stock (the
"Conversion Price") in effect on any Conversion Date shall be the lesser of (a)
the lower of (1) the average Per Share Market Value for the ten (10) Trading
Days immediately preceding the Original Issue Date and (2) the lower of (x) the
average Per Share Market Value for the ten (10) Trading Days immediately
preceding any issuance of Common Stock or Common Stock equivalent by the Company
within 90 days of the Original Issue Date and (y) the price at which the Common
Stock is so issued or may be issued on conversion or exercise of the Common
Stock equivalent (the "Initial Conversion Price"), and (b) the average of the
five lowest Per Share Market Values during the thirty (30) consecutive Trading
Days immediately preceding such Conversion Date.

               (ii) If the Company, at any time while any shares of Preferred
Stock are outstanding, (a) shall pay a stock dividend or otherwise make a
distribution or distributions on shares of its Junior Securities payable in
shares of Common Stock, (b) subdivide outstanding shares of Common Stock into a
larger number of shares, (c) combine outstanding shares of Common Stock into a
smaller number of shares, or (d) issue by reclassification of shares of Common
Stock any shares of capital stock of the Company, the Initial Conversion Price
shall be multiplied by a fraction of which the numerator shall be the number of
shares of Common Stock (excluding treasury shares, if any) outstanding before
such event and of which the denominator shall be the number of shares of Common
Stock outstanding after such event. Any adjustment made pursuant to this Section
5(c)(ii) shall become effective immediately after the record date for the
determination of stockholders entitled to receive such dividend or distribution
and shall become effective immediately after the effective date in the case of a
subdivision, combination or re-classification.

               (iii) If the Company, at any time while any shares of Preferred 
Stock are outstanding, shall issue rights or warrants to all holders of Common
Stock entitling them to subscribe for or purchase shares of Common Stock at a
price per share less than the Per Share Market Value of Common Stock at the
record date mentioned below, the Initial Conversion Price shall be multiplied by
a fraction, of which the denominator shall be the number of shares of Common
Stock (excluding treasury shares, if any) outstanding on the date of issuance of
such rights or warrants plus the number of additional shares of Common Stock
offered for subscription or purchase, and of which the numerator shall be the
number of shares of Common Stock (excluding treasury shares, if any) outstanding
on the date of issuance of such rights or warrants
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plus the number of shares which the aggregate offering price of the total number
of shares so offered would purchase at such Per Share Market Value. Such
adjustment shall be made whenever such rights or warrants are issued, and shall
become effective immediately after the record date for the determination of
stockholders entitled to receive such rights or warrants. However, upon the
expiration of any right or warrant to purchase Common Stock the issuance of
which resulted in an adjustment in the Initial Conversion Price pursuant to this
Section 5(c)(iii), if any such right or warrant shall expire and shall not have
been exercised, the Initial Conversion Price shall immediately upon such
expiration be recomputed and effective immediately upon such expiration be
increased to the price which it would have been (but reflecting any other
adjustments in the Initial Conversion Price made pursuant to the provisions of
this Section 5 after the issuance of such rights or warrants) had the adjustment
of the Initial Conversion Price made upon the issuance of such rights or
warrants been made on the basis of offering for subscription or purchase only
that number of shares of Common Stock actually purchased upon the exercise of
such rights or warrants actually exercised.

               (iv) If the Company, at any time while shares of Preferred Stock 
are outstanding, shall distribute to all holders of Common Stock (and not to
holders of Preferred Stock) evidences of its indebtedness or assets or rights or
warrants to subscribe for or purchase any security (excluding those referred to
in Sections 5(c)(ii) and (iii) above), then in each such case the Initial
Conversion Price at which each share of Preferred Stock shall thereafter be
convertible shall be determined by multiplying the Initial Conversion Price in
effect immediately prior to the record date fixed for determination of
stockholders entitled to receive such distribution by a fraction of which the
denominator shall be the Per Share Market Value of Common Stock determined as of
the record date mentioned above, and of which the numerator shall be such Per
Share Market Value of the Common Stock on such record date less the then fair
market value at such record date of the portion of such assets or evidence of
indebtedness so distributed applicable to one outstanding share of Common Stock
as determined by the Board of Directors in good faith; provided, however, that
in the event of a distribution exceeding ten percent (10%) of the net assets of
the Company, such fair market value shall be determined by a nationally
recognized or major regional investment banking firm or firm of independent
certified public accountants of recognized standing (which may be the firm that
regularly examines the financial statements of the Company) (an "Appraiser")
selected in good faith by the holders of a majority in interest of the shares of
Preferred Stock then outstanding; and provided, further, that the Company, after
receipt of the determination by such Appraiser shall have the right to select an
additional Appraiser, in good faith, in which case the fair market value shall
be equal to the average of the determinations by each such Appraiser. In either
case the adjustments shall be described in a statement provided to the holders
of Preferred Stock of the portion of assets or evidences of indebtedness so
distributed or such subscription rights applicable to one share of Common Stock.
Such adjustment shall be made whenever any such distribution is made and shall
become effective immediately after the record date mentioned above.

               (v) All calculations under this Section 5 shall be made to the
nearest cent or the nearest 1/100th of a share, as the case may be.
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               (vi) Whenever the Initial Conversion Price is adjusted pursuant 
to Section 5(c)(ii),(iii) or (iv), the Company shall promptly mail to each
holder of Preferred Stock, a notice setting forth the Initial Conversion Price
after such adjustment and setting forth a brief statement of the facts requiring
such adjustment.

               (vii) In case of any reclassification of the Common Stock, any
consolidation or merger of the Company with or into another person pursuant to
which the Company will not be the surviving entity, the sale or transfer of all
or substantially all of the assets of the Company or any compulsory share
exchange pursuant to which the Common Stock is converted into other securities,
cash or property, the holders of the Preferred Stock then outstanding shall have
the right thereafter to, at their option, convert all or any part of such shares
only into the shares of stock and other securities, cash and property receivable
upon or deemed to be held by holders of Common Stock following such
reclassification, consolidation, merger, sale, transfer or share exchange, and
the holders of the Preferred Stock shall be entitled upon such event to receive
such amount of securities, cash or property as the shares of the Common Stock of
the Company into which such shares of Preferred Stock could have been converted
immediately prior to such reclassification, consolidation, merger, sale,
transfer or share exchange would have been entitled. The terms of any such
consolidation, merger, sale, transfer or share exchange shall include such terms
so as to continue to give to the holder of Preferred Stock the right to receive
the securities, cash or property set forth in this Section 5(c)(vii) upon any
conversion following such consolidation, merger, sale, transfer or share
exchange. This provision shall similarly apply to successive reclassifications,
consolidations, mergers, sales, transfers or share exchanges.

               (viii)   If:

                         A.    the Company shall declare a dividend (or any
                               other distribution) on its Common Stock; or

                         B.    the Company shall declare a special
                               nonrecurring cash dividend on or a
                               redemption of its Common Stock; or

                         C.    the Company shall authorize the granting to
                               all holders of the Common Stock rights or
                               warrants to subscribe for or purchase any
                               shares of capital stock of any class or of
                               any rights; or

                         D.    the approval of any stockholders of the
                               Company shall be required in connection with
                               any reclassification of the Common Stock of
                               the Company, any consolidation or merger to
                               which the Company is a party, any sale or
                               transfer of all or substantially all of the
                               assets of the Company, of any compulsory
                               share of exchange whereby the Common Stock
                               is converted into other securities, cash or
                               property; or

                         E.    the Company shall authorize the voluntary or
                               involuntary dissolution, liquidation or
                               winding up of the affairs of the Company;
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then the Company shall cause to be filed at each office or agency maintained for
the purpose of conversion of Preferred Stock, and shall cause to be mailed to
the holders of Preferred Stock at their last addresses as they shall appear upon
the stock books of the Company, at least 30 calendar days prior to the
applicable record or effective date hereinafter specified but in any event only
after public announcement of the event or circumstance giving rise to the
notice, a notice stating (x) the date on which a record is to be taken for the
purpose of such dividend, distribution, redemption, rights or warrants, or if a
record is not to be taken, the date as of which the holders of Common Stock of
record to be entitled to such dividend, distributions, redemption, rights or
warrants are to be determined or (y) the date on which such reclassification,
consolidation, merger, sale, transfer or share exchange is expected to become
effective or close, and the date as of which it is expected that holders of
Common Stock of record shall be entitled to exchange their shares of Common
Stock for securities, cash or other property deliverable upon such
reclassification, consolidation, merger, sale, transfer or share exchange.
Holders are entitled to convert shares of Preferred Stock during the 30-day
period commencing the date of such notice to the effective date of the event
triggering such notice.

         G. The Company covenants that it will at all times reserve and keep
available out of its authorized and unissued Common Stock solely for the purpose
of issuance upon conversion of Preferred Stock and payment of dividends on
Preferred Stock, each as herein provided, free from preemptive rights or any
other actual contingent purchase rights of persons other than the holders of
Preferred Stock, such number of shares of Common Stock as shall be required to
be reserved in the aggregate under the provisions of any Purchase Agreement
executed by the Company in connection with the issue of Preferred Stock. The
Company covenants that all shares of Common Stock that shall be so issuable
shall, upon issue, be duly and validly authorized, issued and fully paid,
nonassessable and freely tradeable.

         H. Upon a conversion hereunder the Company shall not be required to
issue stock certificates representing fractions of shares of Common Stock, but
may if otherwise permitted, make a cash payment in respect of any final fraction
of a share based on the Per Share Market Value at such time. If the Company
elects not, or is unable, to make such a cash payment, the holder of a share of
Preferred Stock shall be entitled to receive, in lieu of the final fraction of a
share, one whole share of Common Stock.

         I. The issuance of certificates for shares of Common Stock on
conversion of Preferred Stock shall be made without charge to the holders
thereof for any documentary stamp or similar taxes that may be payable in
respect of the issue or delivery of such certificate, provided that the Company
shall not be required to pay any tax that may be payable in respect of any
transfer involved in the issuance and delivery of any such certificate upon
conversion in a name other than that of the holder of such shares of Preferred
Stock so converted and the Company shall not be required to issue or deliver
such certificates unless or until the person or persons requesting the issuance
thereof shall have paid to the Company the amount of such tax or shall have
established to the satisfaction of the Company that such tax has been paid.

         J. Shares of Preferred Stock converted into Common Stock shall be
canceled and shall have the status of authorized but unissued shares of
undesignated stock.
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         K. Any and all notices or other communications or deliveries to be
provided by the holders of the Preferred Stock hereunder, including, without
limitation, any Conversion Notice, shall be in writing and delivered personally,
by facsimile, sent by a nationally recognized overnight courier service or sent
by certified or registered mail, postage prepaid, addressed to the attention of
the Chief Financial Officer of the Company at the facsimile telephone number or
address of the principal place of business of the Company as set forth in the
Purchase Agreement. Any and all notices or other communications or deliveries to
be provided by the Company hereunder shall be in writing and delivered
personally, by facsimile, sent by a nationally recognized overnight courier
service or sent by certified or registered mail, postage prepaid, addressed to
each holder of Preferred Stock at the facsimile telephone number or address of
such holder appearing on the books of the Company, or if no such facsimile
telephone number or address appears, at the principal place of business of the
holder. Any notice or other communication or deliveries hereunder shall be
deemed given and effective on the earliest of (i) the date of transmission, if
such notice or communication is delivered via facsimile at the facsimile
telephone number specified in this Section prior to 5:30 p.m. (Eastern Time),
(ii) the date after the date of transmission, if such notice or communication is
delivered via facsimile at the facsimile telephone number specified in this
Section later than 5:30 p.m. (Eastern Time) on any date and earlier than 11:59
p.m. (Eastern Time) on such date, (iii) four days after deposit in the United
States mails, (iv) the Business Day following the date of mailing, if sent by
nationally recognized overnight courier service, or (v) upon actual receipt by
the party to whom such notice is required to be given.

         L. Any right or power of the Holders may be waived with respect to any
transaction by an instrument in writing signed by the Holders of not less than
two-thirds (2/3) of the then-outstanding shares of Preferred Stock (excluding
any shares then held by the Company or any subsidiary of the Company), provided
that such waiver applies equally to all Holders.

         Section 1. REDEMPTIONS.

         M. The Company shall have the right, exercisable at any time upon 30
Trading Days notice to the holders of the Preferred Stock given at any time on
or after the third anniversary after the Original Issue Date, to redeem, from
funds legally available therefor at the time of such redemption, all or any
portion of the shares of Preferred Stock which have not previously been
converted or redeemed, at a price per share equal to the product of (i) the
average Per Share Market Value for the ten (10) Trading Days immediately
preceding (1) the date of the redemption notice referenced above or (2) the date
of payment in full by the Company of the redemption price hereunder, whichever
is greater, and (ii) the Conversion Ratio calculated as if the Conversion Date
(for purposes of determining the Conversion Price) were (1) the date of such
redemption notice or (2) the date of payment by the Company of such redemption
price, whichever date yields a lower Conversion Price denominator for the
determination of the Conversion Ratio. The entire redemption price shall be paid
in cash. Holders of Preferred Stock may convert any shares of Preferred Stock,
including shares subject to a redemption notice given under this Section, during
the period from the date of such redemption notice through the 30th Trading Day
thereafter.
   11
         N. The Company shall have the right, exercisable at any time upon 30
Trading Days notice to the Purchaser, given at any time after the Company has
announced publicly a merger or consolidation in which the Company will not be
the surviving entity, to redeem, from funds legally available therefor at the
time of such redemption, all (but not less than all) of the then outstanding and
unconverted shares of Preferred Stock. The redemption price for shares of
Preferred Stock to be redeemed pursuant to this Section will be determined in
accordance with Section 6(a) above and the payment of such redemption price
shall be subject to the provisions of Section 6(c) below. Holders of Preferred
Stock may convert any shares of Preferred Stock, including shares subject to a
redemption notice given under this Section, during the period from the date of
such redemption notice through the 30th Trading Day thereafter.

         O. If any portion of the redemption price under Section 6(a) or (b)
shall not be paid by the Company within seven calendar days after the date due
under such Sections, such redemption price shall be increased by 0.2% per day
until paid (which amount shall be paid as liquidated damages and not as a
penalty). In addition, if any portion of such redemption price remains unpaid
for more than seven calendar days after the date due, the holder of the
Preferred Stock subject to such redemption may elect, by written notice to the
Company given within 45 days after the date due, to either (i) demand conversion
in accordance with the formula and the time frame therefor set forth in Section
5 of all of the shares of Preferred Stock for which such redemption price, plus
accrued liquidated damages thereof, has not been paid in full (the "Unpaid
Redemption Shares"), in which event the Per Share Market Value for such shares
shall be the lower of the Per Share Market Value calculated on the date such
redemption price was originally due and the Per Share Market Value as of the
holder's written demand for conversion, or (ii) invalidate ab initio such
redemption, notwithstanding anything herein contained to the contrary. If the
holder elects option (i) above, the Company shall within five Trading Days of
its receipt of such election deliver to the holder the shares of Common Stock
issuable upon conversion of the Unpaid Redemption Shares subject to such holder
conversion demand and otherwise perform its obligations hereunder with respect
thereto; or, if the Holder elects option (ii) above, the Company shall promptly,
and in any event not later than five Trading Days from receipt of holder's
notice of such election, return to the holder all of the Unpaid Redemption
Shares. If, upon a holder election under option (i) above, the Company fails to
deliver the shares of Common Stock issuable upon conversion of the Unpaid
Redemption Shares within the time period set forth in this Section, the Company
shall pay to the Holder in cash, $1,500 per day until the Company delivers such
Common Stock to the holder, which amount may be applied as a reduction of any
other amount then or thereafter owed by the Company to the Holder as a result of
its failure to deliver.

         P. No redemption notice by the Company shall be effective unless (i) at
the date of the notice, the Company has available funds sufficient to pay the
full redemption price determined as if the redemption were made on the date of
the notice, (ii) at all times from the date of the redemption notice to the
redemption date the Underlying Securities Registration Statement is effective
and the Underlying Shares are listed on the NASDAQ National Market or NASDAQ
SmallCap Market and each other securities exchange or market on which the Common
Stock is then listed, and (iii) the Company has not failed to issue Common Stock
pursuant to any valid Holder Conversion Notice . If a notice is given pursuant
to subsection (b) of this Section 6,
   12
available funds may include funds to be made available by an acquiring entity
pursuant to a binding agreement with the Company.

         Q. Nothing in this Section 6 shall be construed to alter or restrict a
right of any Holder to convert any share of the Preferred Stock at any time.

         Section 1. DEFINITIONS. For the purposes hereof, the following terms
shall have the following meanings:

               "Business Day" means any day of the year on which commercial
banks are not required or authorized to be closed in New York, New York.

               "Common Stock" means shares now or hereafter authorized of the
class of Common Stock, par value $0.01 per share, of the Company and stock of
any other class into which such shares may hereafter have been reclassified or
changed.

               "Conversion Ratio" means, at any time, a fraction, of which the
numerator is Stated Value plus accrued but unpaid dividends (including any
accrued but unpaid interest thereon), and of which the denominator is the
Conversion Price at such time.

               "Junior Securities" means the Common Stock and all other equity
securities of the Company, except the Series A Convertible Preferred Stock,
Series B Convertible Preferred Stock and Series C Convertible Preferred Stock.

               "Original Issue Date" shall mean the date of the first issuance
of any shares of the Preferred Stock regardless of the number of transfers of
any particular shares of Preferred Stock and regardless of the number of
certificates which may be issued to evidence such Preferred Stock.

               "Per Share Market Value" means on any particular date (a) the
closing bid price per share of the Common Stock on such date on the Nasdaq
National Market or other stock exchange on which the Common Stock has been
listed or if there is no such price on such date, then the closing bid price on
such exchange on the date nearest preceding such date, or (b) if the Common
Stock is not listed on the Nasdaq National Market or any stock exchange, the
closing bid price for a share of Common Stock in the over-the-counter market, as
reported by the Nasdaq Stock Market at the close of business on such date, or
(c) if the Common Stock is not quoted on the Nasdaq Stock Market, the closing
bid price for a share of Common Stock in the over-the-counter market as reported
by the National Quotation Bureau Incorporated (or similar organization or agency
succeeding to its functions of reporting prices), or (d) if the Common Stock is
not reported by the National Quotation Bureau Incorporated (or similar
organization or agency succeeding to its functions of reporting prices), then
the average of the "Pink Sheet" quotes for the relevant conversion period, as
determined in good faith by the holder, or (e) if the Common Stock is not
publicly traded the fair market value of a share of Common Stock as determined
by an Appraiser selected in good faith by the holders of a majority in interest
of the shares of the Preferred Stock; provided, however, that the Company, after
receipt of the
   13
determination by such Appraiser, shall have the right to select an additional
Appraiser, in which case, the fair market value shall be equal to the average of
the determinations by each such Appraiser.

               "Person" means a corporation, an association, a partnership,
organization, a business, an individual, a government or political subdivision
thereof or a governmental agency.

               "Purchase Agreement" means the Convertible Preferred Stock
Purchase Agreement, dated as of the Original Issue Date, between the Company and
the original holder of the Preferred Stock.

               "Registration Rights Agreement" means the Registration Rights
Agreement, dated the Original Issue Date, by and between the Company and the
original holder of Preferred Stock.

               "Trading Day" means (a) a day on which the Common Stock is traded
on the Nasdaq National Market or principal national securities exchange or
market on which the Common Stock has been listed, or (b) if the Common Stock is
not listed on the Nasdaq National Market or any stock exchange or market, a day
on which the Common Stock is traded in the over-the-counter market, as reported
by the OTC Bulletin Board, or (c) if the Common Stock is not quoted on the OTC
Bulletin Board, a day on which the Common Stock is quoted in the
over-the-counter market as reported by the National Quotation Bureau
Incorporated (or any similar organization or agency succeeding its functions of
reporting prices).

               "Underlying Shares" means the number of shares of Common Stock
into which the Shares are convertible in accordance with the terms hereof and
the Purchase Agreement.

               "Underlying Securities Registration Statement" means the
registration statement filed by the Company, pursuant to the Registration Rights
Agreement, covering the Underlying Shares and the Warrant Shares.

               "Warrant Shares" means the number of shares of Common Stock
issuable upon the exercise in full of the Warrants.

               "Warrants" means the Common Stock purchase warrants issued by the
Company to and as directed by the original holder of the Preferred Stock
simultaneously with the closing of the purchase of Preferred Stock under the
Purchase Agreement, pursuant to which the holders of the Warrants shall,
collectively, have the right to acquire shares of Common Stock (subject to
adjustment as provided therein) at the exercise price per share set forth
therein.





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                                    EXHIBIT A

                              NOTICE OF CONVERSION
                            AT THE ELECTION OF HOLDER

(To be Executed by the Registered Holder
in order to Convert shares of Preferred Stock)

The undersigned hereby irrevocably elects to convert the number of shares of
Series C Convertible Preferred Stock indicated below, into shares of Common
Stock, par value $.01 per share (the "Common Stock"), of Cayenne Software, Inc.
(the "Company") according to the conditions hereof, as of the date written
below. If shares are to be issued in the name of a person other than
undersigned, the undersigned will pay all transfer taxes payable with respect
thereto and is delivering herewith such certificates and opinions as reasonably
requested by the Company in accordance therewith. No fee will be charged to the
holder for any conversion, except for such transfer taxes, if any.

Conversion calculations:
                            Date to Effect Conversion


                            Number of shares of Preferred Stock to be Converted


                            Number of shares of Common Stock to be Issued


                            Applicable Conversion Price


                            Signature


                            Name:


                            Address:

   15
                                    EXHIBIT B

                             NOTICE OF CONVERSION AT
                           THE ELECTION OF THE COMPANY


The undersigned in the name and on behalf of Cayenne Software, Inc. (the
"Company") hereby notifies the addressee hereof that the Company hereby elects
to exercise its right to convert [ ] shares of its Series D Convertible
Preferred Stock (the "Preferred Stock") held by the Holder into shares of Common
Stock, par value $.01 per share (the "Common Stock") of the Company according to
the terms hereof, as of the date written below. No fee will be charged to the
Holder for any conversion hereunder, except for such transfer taxes, if any
which may be incurred by the Company if shares are to be issued in the name of a
person other than the person to whom this notice is addressed.

Conversion calculations:
                            Date to effect Conversion


                            Number of shares of Preferred Stock to be Converted


                            Number of shares of Common Stock to be Issued


                            Applicable Conversion Price


                            Name of Holder:


                            Address of Holder: