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                                                                    EXHIBIT 10.1

                               CAMINUS CORPORATION

                            1999 STOCK INCENTIVE PLAN

1.    Purpose

      The purpose of this 1999 Stock Incentive Plan (the "Plan") of Caminus
Corporation, a Delaware corporation (the "Company"), is to advance the interests
of the Company's stockholders by enhancing the Company's ability to attract,
retain and motivate persons who make (or are expected to make) important
contributions to the Company by providing such persons with equity ownership
opportunities and performance-based incentives and thereby better aligning the
interests of such persons with those of the Company's stockholders. Except where
the context otherwise requires, the term "Company" shall include any of the
Company's present or future subsidiary corporations as defined in Section 424(f)
of the Internal Revenue Code of 1986, as amended, and any regulations
promulgated thereunder (the "Code").

2.    Eligibility

      All of the Company's employees, officers, directors, consultants and
advisors (and any individuals who have accepted an offer for employment) are
eligible to be granted options, restricted stock awards, or other stock-based
awards (each, an "Award") under the Plan. Each person who has been granted an
Award under the Plan shall be deemed a "Participant."

3.    Administration, Delegation

            (a) Administration by Board of Directors. The Plan will be
administered by the Board of Directors of the Company (the "Board"). The Board
shall have authority to grant Awards and to adopt, amend and repeal such
administrative rules, guidelines and practices relating to the Plan as it shall
deem advisable. The Board may correct any defect, supply any omission or
reconcile any inconsistency in the Plan or any Award in the manner and to the
extent it shall deem expedient to carry the Plan into effect and it shall be the
sole and final judge of such expediency. All decisions by the Board shall be
made in the Board's sole discretion and shall be final and binding on all
persons having or claiming any interest in the Plan or in any Award. No director
or person acting pursuant to the authority delegated by the Board shall be
liable for any action or determination relating to or under the Plan made in
good faith.

            (b) Delegation to Executive Officers. To the extent permitted by
applicable law, the Board may delegate to one or more executive officers of the
Company the power to make Awards and exercise such other powers under the Plan
as the Board may determine, provided that the Board shall fix the maximum number
of shares subject to Awards and the maximum number of shares for any one
Participant to be made by such executive officers.

            (c) Appointment of Committees. To the extent permitted by applicable
law, the Board may delegate any or all of its powers under the Plan to one or
more committees or subcommittees of the Board (a "Committee"). All references in
the Plan to the "Board" shall mean the Board or a Committee of the Board or the
executive officer referred to in Section 3(b) to the


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extent that the Board's powers or authority under the Plan have been delegated
to such Committee or executive officer.

4.    Stock Available for Awards

            (a) Number of Shares. Subject to adjustment under Section 8, Awards
may be made under the Plan for up to 502,312 shares of common stock, $0.01 par
value per share, of the Company (the "Common Stock"). If any Award expires or is
terminated, surrendered or canceled without having been fully exercised or is
forfeited in whole or in part or results in any Common Stock not being issued,
the unused Common Stock covered by such Award shall again be available for the
grant of Awards under the Plan, subject, however, in the case of Incentive Stock
Options (as hereinafter defined), to any limitation required under the Code.
Shares issued under the Plan may consist in whole or in part of authorized but
unissued shares or treasury shares.

            (b) Per-Participant Limit. Subject to adjustment under Section 8,
for Awards granted after the Common Stock is registered under the Securities
Exchange Act of 1934 (the "Exchange Act"), the maximum number of shares of
Common Stock with respect to which an Award may be granted to any Participant
under the Plan shall be 450,000 per calendar year. The per-Participant limit
described in this Section 4(b) shall be construed and applied consistently with
Section 162(m) of the Code ("Section 162(m)").

5.    Stock Options

            (a) General. The Board may grant options to purchase Common Stock
(each, an "Option") and determine the number of shares of Common Stock to be
covered by each Option, the exercise price of each Option and the conditions and
limitations applicable to the exercise of each Option, including conditions
relating to applicable federal or state securities laws, as it considers
necessary or advisable. An Option which is not intended to be an Incentive Stock
Option (as hereinafter defined) shall be designated a "Nonstatutory Stock
Option."

            (b) Incentive Stock Options. An Option that the Board intends to be
an "incentive stock option" as defined in Section 422 of the Code (an "Incentive
Stock Option") shall only be granted to employees of the Company and shall be
subject to and shall be construed consistently with the requirements of Section
422 of the Code. The Company shall have no liability to a Participant, or any
other party, if an Option (or any part thereof) which is intended to be an
Incentive Stock Option is not an Incentive Stock Option.

            (c) Exercise Price. The Board shall establish the exercise price at
the time each Option is granted and specify it in the applicable option
agreement.

            (d) Duration of Options. Each Option shall be exercisable at such
times and subject to such terms and conditions as the Board may specify in the
applicable option agreement.

            (e) Exercise of Option. Options may be exercised by delivery to the
Company of a written notice of exercise signed by the proper person or by any
other form of notice (including electronic notice) approved by the Board
together with payment in full as specified in Section 5(f) for the number of
shares for which the Option is exercised.


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            (f) Payment Upon Exercise. Common Stock purchased upon the exercise
of an Option granted under the Plan shall be paid for as follows:

                  (1) in cash or by check, payable to the order of the Company;

                  (2) except as the Board may, in its sole discretion, otherwise
provide in an option agreement, by (i) delivery of an irrevocable and
unconditional undertaking by a creditworthy broker to deliver promptly to the
Company sufficient funds to pay the exercise price or (ii) delivery by the
Participant to the Company of a copy of irrevocable and unconditional
instructions to a creditworthy broker to deliver promptly to the Company cash or
a check sufficient to pay the exercise price;

                  (3) when the Common Stock is registered under the Exchange
Act, by delivery of shares of Common Stock owned by the Participant valued at
their fair market value as determined by (or in a manner approved by) the Board
in good faith ("Fair Market Value"), provided (i) such method of payment is then
permitted under applicable law and (ii) such Common Stock was owned by the
Participant at least six months prior to such delivery;

                  (4) to the extent permitted by the Board, in its sole
discretion by (i) delivery of a promissory note of the Participant to the
Company on terms determined by the Board, or (ii) payment of such other lawful
consideration as the Board may determine; or

                  (5) by any combination of the above permitted forms of
payment.

6.    Restricted Stock

            (a) Grants. The Board may grant Awards entitling recipients to
acquire shares of Common Stock, subject to the right of the Company to
repurchase all or part of such shares at their issue price or other stated or
formula price (or to require forfeiture of such shares if issued at no cost)
from the recipient in the event that conditions specified by the Board in the
applicable Award are not satisfied prior to the end of the applicable
restriction period or periods established by the Board for such Award (each, a
"Restricted Stock Award").

            (b) Terms and Conditions. The Board shall determine the terms and
conditions of any such Restricted Stock Award, including the conditions for
repurchase (or forfeiture) and the issue price, if any. Any stock certificates
issued in respect of a Restricted Stock Award shall be registered in the name of
the Participant and, unless otherwise determined by the Board, deposited by the
Participant, together with a stock power endorsed in blank, with the Company (or
its designee). At the expiration of the applicable restriction periods, the
Company (or such designee) shall deliver the certificates no longer subject to
such restrictions to the Participant or if the Participant has died, to the
beneficiary designated, in a manner determined by the Board, by a Participant to
receive amounts due or exercise rights of the Participant in the event of the
Participant's death (the "Designated Beneficiary"). In the absence of an
effective designation by a Participant, Designated Beneficiary shall mean the
Participant's estate.

7.    Other Stock-Based Awards

      The Board shall have the right to grant other Awards based upon the Common
Stock having


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such terms and conditions as the Board may determine, including the grant of
shares based upon certain conditions, the grant of securities convertible into
Common Stock and the grant of stock appreciation rights.

8.    Adjustments for Changes in Common Stock and Certain Other Events

            (a) Changes in Capitalization. In the event of any stock split,
reverse stock split, stock dividend, recapitalization, combination of shares,
reclassification of shares, spin-off or other similar change in capitalization
or event, or any distribution to holders of Common Stock other than a normal
cash dividend, (i) the number and class of securities available under this Plan,
(ii) the per-Participant limit set forth in Section 4(b), (iii) the number and
class of securities and exercise price per share subject to each outstanding
Option, (iv) the repurchase price per share subject to each outstanding
Restricted Stock Award, and (v) the terms of each other outstanding Award shall
be appropriately adjusted by the Company (or substituted Awards may be made, if
applicable) to the extent the Board shall determine, in good faith, that such an
adjustment (or substitution) is necessary and appropriate. If this Section 8(a)
applies and Section 8(c) also applies to any event, Section 8(c) shall be
applicable to such event, and this Section 8(a) shall not be applicable.

            (b) Liquidation or Dissolution. In the event of a proposed
liquidation or dissolution of the Company, the Board shall upon written notice
(including electronic notice) to the Participants provide that all then
unexercised Options will (i) become exercisable in full as of a specified time
at least 10 business days prior to the effective date of such liquidation or
dissolution and (ii) terminate effective upon such liquidation or dissolution,
except to the extent exercised before such effective date. The Board may specify
the effect of a liquidation or dissolution on any Restricted Stock Award or
other Award granted under the Plan at the time of the grant of such Award.

            (c)   Acquisition Events

                  (1) Definition. An "Acquisition Event" shall mean: (a) any
merger or consolidation which would result in the voting securities of the
Company outstanding immediately prior thereto continuing to represent (either by
remaining outstanding or by being converted into voting securities of the
surviving or acquiring entity) less than 60% of the combined voting power of the
voting securities of the Company or such surviving or acquiring entity
outstanding immediately after such merger or consolidation; (b) any sale of all
or substantially all of the assets of the Company; (c) the complete liquidation
of the Company; or (d) the acquisition of "beneficial ownership" (as defined in
Rule 13d-3 under the Exchange Act) of securities of the Company representing 60%
or more of the combined voting power of the Company's then outstanding
securities (other than through an acquisition of securities directly from the
Company) by any "person," as such term is used in Sections 13(d) and 14(d) of
the Exchange Act other than the Company, any trustee or other fiduciary holding
securities under an employee benefit plan of the Company, or any entity owned
directly or indirectly by the stockholders of the Company in substantially the
same proportion as their ownership of stock of the Company

                  (2) Consequences of an Acquisition Event on Options. Upon the
occurrence of an Acquisition Event, or the execution by the Company of any
agreement with respect to an Acquisition Event, the Board shall provide that all
outstanding Options shall be assumed, or


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equivalent options shall be substituted, by the acquiring or succeeding
corporation (or an affiliate thereof). For purposes hereof, an Option shall be
considered to be assumed if, following consummation of the Acquisition Event,
the Option confers the right to purchase, for each share of Common Stock subject
to the Option immediately prior to the consummation of the Acquisition Event,
the consideration (whether cash, securities or other property) received as a
result of the Acquisition Event by holders of Common Stock for each share of
Common Stock held immediately prior to the consummation of the Acquisition Event
(and if holders were offered a choice of consideration, the type of
consideration chosen by the holders of a majority of the outstanding shares of
Common Stock); provided, however, that if the consideration received as a result
of the Acquisition Event is not solely common stock of the acquiring or
succeeding corporation (or an affiliate thereof), the Company may, with the
consent of the acquiring or succeeding corporation, provide for the
consideration to be received upon the exercise of Options to consist solely of
common stock of the acquiring or succeeding corporation (or an affiliate
thereof) equivalent in fair market value to the per share consideration received
by holders of outstanding shares of Common Stock as a result of the Acquisition
Event.

                 Notwithstanding the foregoing, if the acquiring or succeeding
corporation (or an affiliate thereof) does not agree to assume, or substitute
for, such Options, then the Board shall, upon written notice (including
electronic notice) to the Participants, provide that all then unexercised
Options will become exercisable in full as of a specified time prior to the
Acquisition Event and will terminate immediately prior to the consummation of
such Acquisition Event, except to the extent exercised by the Participants
before the consummation of such Acquisition Event; provided, however, that in
the event of an Acquisition Event under the terms of which holders of Common
Stock will receive upon consummation thereof a cash payment for each share of
Common Stock surrendered pursuant to such Acquisition Event (the "Acquisition
Price"), then the Board may instead provide that all outstanding Options shall
terminate upon consummation of such Acquisition Event and that each Participant
shall receive, in exchange therefor, a cash payment equal to the amount (if any)
by which (A) the Acquisition Price multiplied by the number of shares of Common
Stock subject to such outstanding Options (whether or not then exercisable),
exceeds (B) the aggregate exercise price of such Options.

                  (3) Consequences of an Acquisition Event on Restricted Stock
Awards. Upon the occurrence of an Acquisition Event, the repurchase and other
rights of the Company under each outstanding Restricted Stock Award shall be
assumed or substituted by and shall inure to the benefit of the Company's
successor and shall apply to the cash, securities or other property which the
Common Stock was converted into or exchanged for pursuant to such Acquisition
Event in the same manner and to the same extent as they applied to the Common
Stock subject to such Restricted Stock Award.

                  (4) Consequences of an Acquisition Event on Other Awards. The
Board shall specify the effect of an Acquisition Event on any other Award
granted under the Plan at the time of the grant of such Award.

                  (5) Consequences of Certain Terminations After an Acquisition
Event. Each Option, Restricted Stock Award or other Award assumed or substituted
pursuant to this Section 8(c) shall include a provision to the effect that such
Option, Restricted Stock Award or other Award shall become immediately
exercisable (or vested) in full if, on or prior to the first anniversary


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of the Acquisition Event, the Participant terminates his or her employment for
Good Reason or is terminated without Cause by the surviving or acquiring
corporation. "Good Reason" shall mean any significant diminution in the
Participant's title, authority or responsibilities from and after such
Acquisition Event or any reduction in the annual cash compensation payable to
the Participant from and after such Acquisition Event. "Cause" shall mean any
willful misconduct by the Participant which affects the business reputation of
the Company or willful failure by the Participant to perform his or her material
responsibilities to the Company (including, without limitation, breach by the
Participant of any provision of any employment, consulting, advisory,
nondisclosure, non-competition or other similar agreement between the
Participant and the Company). The Participant shall be considered to have been
discharged for "Cause" if the Company determines, within 30 days after the
Participant's resignation, that discharge for Cause was warranted.

9.    Non-Competition

            (a) Non-Competition. As a condition to the issuance of Awards and
shares of Common Stock issuable upon exercise of Awards (together with the
Awards, "Securities") pursuant to the Plan, and as a means reasonably designed
to protect the intellectual property, confidential and proprietary information
of the Company, as long as the Participant owns Securities, the Participant will
not, without the prior written consent of the Company based upon approval from
the Board (or any successor entity of the Company), anywhere in the world,
directly or indirectly, engage in, assist (financially or otherwise), associate
with, or perform services (other than on behalf of the Company or any of its
affiliates) in the Company Business, including, without limitation, whether such
engagement, assistance, association or performance is as an individual,
principal, officer, director, proprietor, employee, partner, stockholder or
other investor (other than as a holder of less than five percent (5%) of the
outstanding capital stock of a publicly traded corporation), creditor,
guarantor, consultant, advisor, agent, sales representative or other
participant, or otherwise permit his name to be used or employed with any such
business. "Company Business" shall mean the business of the Company, including,
without limitation, the business of developing, licensing, installing and
maintaining commodities trading and risk management software and providing
consulting and support services substantially related to such software
activities to the foreign exchange, natural gas, crude oil, refined products and
electric power industries.

            (b) Non-Interference. As long as a Participant owns Securities, no
Participant shall, without the prior written consent of the Company, directly,
indirectly or as an agent on behalf of or in conjunction with any person, firm,
partnership, corporation or other entity, (a) hire, solicit, encourage the
resignation of, or in any other manner seek to engage or employ any person who
is then, or within the prior twelve (12) months has been, an employee of the
Company or its affiliates, whether or not for compensation and whether as an
officer, covenantor, consultant, advisor, independent sales representative,
independent contractor or participant, or (b) except as may be appropriate to
perform such Participant's employment duties for the Company, contact, solicit,
service or otherwise have any dealings related to Company Business with any
person or entity with whom the Company or its affiliates has a former, current
or prospective business relationship or who is or was at any time during his
employment with the Company (including any predecessor or successor entity) a
customer or client of the Company or its affiliates, or a prospective customer
or client to which the Company or its affiliates has made a written or oral
business proposal.


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            (c) Effect of Violation. In the event of a violation by a
Participant of the provisions of this Section 9, then all Options held by such
Participant shall be immediately null and void and non-exercisable, and the
Company shall have the right, at any time after such event, to repurchase any
shares of Common Stock issued in connection with Option exercises or other
Awards ("Award Shares") owned by such Participant for an amount equal to the
lesser of (i) the Fair Market Value of the Award Shares repurchased as of the
date of such violation, and (ii) the price paid by the Participant for such
Award Shares.

10.   General Provisions Applicable to Awards

            (a) Transferability of Awards. Except as the Board may otherwise
determine or provide in an Award, Awards shall not be sold, assigned,
transferred, pledged or otherwise encumbered by the person to whom they are
granted, either voluntarily or by operation of law, except by will or the laws
of descent and distribution, and, during the life of the Participant, shall be
exercisable only by the Participant. References to a Participant, to the extent
relevant in the context, shall include references to authorized transferees.

            (b) Documentation. Each Award shall be evidenced by a written
instrument in such form as the Board shall determine, it being understood that
an electronic form of Award shall be deemed to be a written instrument for
purposes of the Plan. Each Award may contain terms and conditions in addition to
those set forth in the Plan.

            (c) Board Discretion. Except as otherwise provided by the Plan, each
Award may be made alone or in addition or in relation to any other Award. The
terms of each Award need not be identical, and the Board need not treat
Participants uniformly.

            (d) Termination of Status. The Board shall determine the effect on
an Award of the disability, death, retirement, authorized leave of absence or
other change in the employment or other status of a Participant and the extent
to which, and the period during which, the Participant, the Participant's legal
representative, conservator, guardian or Designated Beneficiary may exercise
rights under the Award.

            (e) Withholding. Each Participant shall pay to the Company, or make
provision satisfactory to the Board for payment of, any taxes required by law to
be withheld in connection with Awards to such Participant no later than the date
of the event creating the tax liability. Except as the Board may otherwise
provide in an Award, when the Common Stock is registered under the Exchange Act,
Participants may, to the extent then permitted under applicable law, satisfy
such tax obligations in whole or in part by delivery of shares of Common Stock,
including shares retained from the Award creating the tax obligation, valued at
their Fair Market Value. The Company may, to the extent permitted by law, deduct
any such tax obligations from any payment of any kind otherwise due to a
Participant.

            (f) Amendment of Award. The Board may amend, modify or terminate any
outstanding Award, including but not limited to, substituting therefor another
Award of the same or a different type, changing the date of exercise or
realization, and converting an Incentive Stock Option to a Nonstatutory Stock
Option, provided that the Participant's consent to such action shall


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be required unless the Board determines that the action, taking into account any
related action, would not materially and adversely affect the Participant.

            (g) Conditions on Delivery of Stock. The Company will not be
obligated to deliver any shares of Common Stock pursuant to the Plan or to
remove restrictions from shares previously delivered under the Plan until (i)
all conditions of the Award have been met or removed to the satisfaction of the
Company, (ii) in the opinion of the Company's counsel, all other legal matters
in connection with the issuance and delivery of such shares have been satisfied,
including any applicable securities laws and any applicable stock exchange or
stock market rules and regulations, and (iii) the Participant has executed and
delivered to the Company such representations or agreements as the Company may
consider appropriate to satisfy the requirements of any applicable laws, rules
or regulations.

            (h) Acceleration. The Board may at any time provide that any Options
shall become immediately exercisable in full or in part, that any Restricted
Stock Awards shall be free of restrictions in full or in part or that any other
Awards may become exercisable in full or in part or free of some or all
restrictions or conditions, or otherwise realizable in full or in part, as the
case may be.

11.   Miscellaneous

            (a) No Right To Employment or Other Status. No person shall have any
claim or right to be granted an Award, and the grant of an Award shall not be
construed as giving a Participant the right to continued employment or any other
relationship with the Company. The Company expressly reserves the right at any
time to dismiss or otherwise terminate its relationship with a Participant free
from any liability or claim under the Plan, except as expressly provided in the
applicable Award.

            (b) No Rights As Stockholder. Subject to the provisions of the
applicable Award, no Participant or Designated Beneficiary shall have any rights
as a stockholder with respect to any shares of Common Stock to be distributed
with respect to an Award until becoming the record holder of such shares.
Notwithstanding the foregoing, in the event the Company effects a split of the
Common Stock by means of a stock dividend and the exercise price of and the
number of shares subject to such Option are adjusted as of the date of the
distribution of the dividend (rather than as of the record date for such
dividend), then an optionee who exercises an Option between the record date and
the distribution date for such stock dividend shall be entitled to receive, on
the distribution date, the stock dividend with respect to the shares of Common
Stock acquired upon such Option exercise, notwithstanding the fact that such
shares were not outstanding as of the close of business on the record date for
such stock dividend.

            (c) Effective Date and Term of Plan. The Plan shall become effective
on the date on which it is adopted by the Board, but no Award granted to a
Participant that is intended to comply with Section 162(m) shall become
exercisable, vested or realizable, as applicable to such Award, unless and until
the Plan has been approved by the Company's stockholders to the extent
stockholder approval is required by Section 162(m) in the manner required under
Section 162(m) (including the vote required under Section 162(m)). No Awards
shall be granted under the Plan after the completion of ten years from the
earlier of (i) the date on which the Plan was adopted by the Board


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or (ii) the date the Plan was approved by the Company's stockholders, but Awards
previously granted may extend beyond that date.

            (d) Amendment of Plan. The Board may amend, suspend or terminate the
Plan or any portion thereof at any time, provided that to the extent required by
Section 162(m), no Award granted to a Participant that is intended to comply
with Section 162(m) after the date of such amendment shall become exercisable,
realizable or vested, as applicable to such Award, unless and until such
amendment shall have been approved by the Company's stockholders as required by
Section 162(m) (including the vote required under Section 162(m)).

            (e) Governing Law. The provisions of the Plan and all Awards made
hereunder shall be governed by and interpreted in accordance with the laws of
the State of Delaware, without regard to any applicable conflicts of law.


                                          Approved by the Board of Directors
                                          on September 30, 1999

                                          Approved by the Stockholders
                                          on September 30, 1999


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                               CAMINUS CORPORATION

                                 AMENDMENT NO. 1

                                       TO

                            1999 STOCK INCENTIVE PLAN


      Section 4(a) of the 1999 Stock Incentive Plan (the "Plan") of Caminus
Corporation, a Delaware corporation, is hereby amended to increase from 502,312
to 1,218,943 the number of shares of Common Stock, $0.01 par value per share,
authorized for issuance under the Plan.

      Except to the extent amended hereby, the Plan is in all respects hereby
ratified and confirmed and shall continue in full force and effect.

                                    Adopted by the Board of Directors on
                                    November 2, 2000 and February 8, 2001.



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