.
                                                                               .
                                                                               .
                                                                      EXHIBIT 21

                    SUBSIDIARIES OF TYLER TECHNOLOGIES, INC.


<Table>
<Caption>
Name                                         Place of Incorporation
- ----                                         ----------------------
                                          

The Software Group, Inc.                     Texas
Interactive Computer Designs, Inc.           Texas
Eagle Computer Systems, Inc.                 Delaware
FundBalance, Inc.                            Delaware
Munis, Inc.                                  Maine
Cole Layer Trumble Company                   Delaware
Eden Systems, Inc.                           Washington
</Table>