RipTcl is a front-end to various programs that rips audio CDs and encodes/transcodes to FLAC, Ogg Vorbis, MP3, WAV, or AAC under Linux. It provides extended meta tagging features, detects and saves files to USB storage players, burns CDs in DAO mode, plays audio, and supports freedb.
Scid vs. PC is a powerful chess toolkit. It has extensive database and PGN file handling capabilities, and can be used to play chess on the internet (with FICS), against a computer chess opponent, or for chess grandmasters to prepare for tournament matches. Additionally, Scid vs. PC can run automated computer tournaments with chess engines playing against each other.