Free software

• CalcMass  .. from given Formula calculates Mr of chemical compound using Ar values of elements optionally defined by user, allows to define any number of protection or reaction group symbols (e.g. Ac for acetyl, Bn benzyl, ..), that can be used to speed up entering of the Formula
• Image Map Editor written in JavaScript

• Command line utilities:
• CDA.EXE - control audio CDROM from command line (play, stop, volume..)
• CLOCKS.EXE - Set/get/synchronize DOS and/or RTC (real time clock)
• CONVCZ.EXE - Convert ASCII or DBF files from one codepage to another
• DOFILE.EXE - List, delete, compare, copy, move files recursively
• KEYBCZ.EXE - switch DOS keyboard mapping (same as CTRL-ALT-F1/F2)