MPEG4IP: open source MPEG4 package MPEG-4 AAC audio encoder, MP3 encoder, MPEG-4 video encoders, MP4 file creator and hinter, IETF standards-based streaming server, MPEG-4 player. Mostly Linux-based. http://mpeg4ip.sourceforge.net/

Oidua A flexible program for generating lists of music collections. http://oidua.lycken.com/

Open Sound World Open-source programming environment that allows musicians sound processing in response to real-time control. http://osw.sourceforge.net

orDrumbox Real-time drum machine and audio sequencer (Java) [OS Independent]. http://ordrumbox.sourceforge.net/

StreamStudio Open source based platform for Internet streaming of audio-visual media. http://streamstudio.sourceforge.net

MP3 Book Helper Provides Mp3 and Ogg Vorbis tags editing and file renaming functions. (Delphi) [Windows] http://mp3bookhelper.sourceforge.net/

WxChecksums Calculates and verifies checksums. (C++) [Windows,Linux] http://wxchecksums.sourceforge.net/