EXHIBIT 32.1

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 Tyler Technologies, Inc.
(the "Company") for the quarterly period ended June 30, 2003 as filed with the
Securities and Exchange Commission (the "Report"), I, John M. Yeaman, certify
pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the
Sarbanes-Oxley Act of 2002, that, to my knowledge:

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

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

                                           By: /s/ John M. Yeaman
                                               ------------------
                                           John M. Yeaman
                                           President and Chief Executive Officer
                                           Dated: July 31, 2003

A signed original of this written statement required by Section 906 has been
provided to Tyler Technologies, Inc. and will be retained by Tyler Technologies,
Inc. and furnished to the Securities and Exchange Commission upon request.



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 Tyler Technologies, Inc.
(the "Company") for the quarterly period ended June 30, 2003 as filed with the
Securities and Exchange Commission (the "Report"), I, Theodore L. Bathurst,
certify pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906
of the Sarbanes0Oxley Act of 2002, that, to my knowledge:

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

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

                                      By: /s/ Theodore L. Bathurst
                                          ------------------------
                                      Theodore L. Bathurst
                                      Vice President and Chief Financial Officer
                                      Dated:  July 31, 2003

A signed original of this written statement required by Section 906 has been
provided to Tyler Technologies, Inc. and will be retained by Tyler Technologies,
Inc. and furnished to the Securities and Exchange Commission upon request.