Test/demo

dtl CompareMaster (version 2.0) Light free downloads
macOS [9 mb]
Windows [21.7 mb[
Linux [12 mb]

dtl LetterModeller (version 6.9) free downloads
macOS [16.7 mb]
Windows (32-bit) [16.2 mb]
Windows (64-bit) [17.6 mb]
Linux [23.9 mb]

dtl OTMaster (version 3.7) Light free downloads
Please note that this an old 32-bit edition that will not run on macOS 10.15 (Catalina) or newer. The current ‘full’ retail 7.9 version is 64 bit and, of course, fully up-to-date.
macOS [22.8 mb]
Windows [26.1 mb]
Linux [29.5 mb]