Here is where you can get the most recent demo versions of Textco's software. Demo versions do everything the basic programs do except print, save, and export.
If you have version 3.0 of Gene Construction Kit or version 1.6 of Gene Inspector, you can get a free update here. Any registered owner of one of these products can automatically obtain the latest version for no charge. Also available are updates to GCK 2.5.1 or later and GI 1.5.0 or later.