Exhibit 99.1

                            CERTIFICATION PURSUANT TO

                             18 U.S.C. SECTION 1350

                             AS ADOPTED PURSUANT TO

                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

         In connection with the Quarterly Report on Form 10-Q of Caminus
Corporation (the "Company") for the period ended September 30, 2002 as filed
with the Securities and Exchange Commission on the date hereof (the "Report"),
I, William P. Lyons, Chief Executive Officer of the Company, certify, pursuant
to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the
Sarbanes-Oxley Act of 2002, that:

         1. The Report fully complies with the requirements of Section 13(a) or
            15(d) of the Securities Exchange Act of 1934, as amended; and

         2. The information contained in the Report fairly presents, in all
            material respects, the financial condition and result of operations
            of the Company.

/s/ William P. Lyons
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William P. Lyons
Chief Executive Officer

November 6, 2002