1 EXHIBIT 21 SUBSIDIARIES OF TYLER TECHNOLOGIES, INC. Name Place of Incorporation Business Resources Corporation Texas The Software Group, Inc. Texas Interactive Computer Designs, Inc. Texas CMS Holdings, Inc. Texas CompactData Solutions, Inc. Texas Eagle Computer Systems, Inc. Delaware FundBalance, Inc. Delaware Gemini Systems Inc. Delaware Process Incorporated Maine NationsData.com, Inc. Delaware Cole Layer Trumble Company Delaware Appraisal Records Services, Inc. Texas Automated Records Services, Inc. Texas Government Records Services, Inc. Texas Kofile, Inc. Texas Kofile Germany, Gmbh Germany PRETS Holdings, Inc. Delaware Ram Quest Software, Inc. Texas RTS Holdings, Inc. Texas Spectrum Data, Inc. Texas Title Records Corporation Texas