(jz)
GnuCash is personal and small-business financial-accounting software
The open source video transcoder
The ultimate desktop calculator
Matroska tools for Linux, Unix and Windows
MKVToolNix is a set of tools to create, alter and inspect Matroska files
Open Source PC/MS-DOS emulator
Hatari is an Atari ST/STE/TT/Falcon emulator
The FS-UAE Amiga Emulator
The Versatile Commodore Emulator
Simple application for viewing and editing tags in audio files.
OmegaT, the free (GPL) translation memory tool
Unison file synchroniser
Portable and free Atari 8-bit emulator
Atari Jaguar emulator
Zaz - Because hackers too need to play with balls!