Gpsim is a full-featured software simulator for Microchip PIC microcontrollers.

Adun is a biomolecular simulator that also includes data management and analysis capabilities. It was developed at the Computational Biophysics and Biochemistry Laboratory, a part of the Research Unit on Biomedical Informatics of the UPF.

Uzbl follows the UNIX philosophy - "Write programs that do one thing and do it well. Write programs to work together. Write programs to handle text streams, because that is a universal interface."

Orpie is a fullscreen RPN calculator for the console. Its operation is similar to that of modern HP calculators, but data entry has been optimized for efficiency on a PC keyboard. Features include:

Playmidi is a MIDI file player that will play back using FM, GUS, SoundBlaster or external MIDI. It also supports Creative Music Files (CMF), Microsoft RIFF (RMI) files and large MIDI archives from games such as Ultima 7.