OpenMusic is an object-oriented visual programming environment based on CommonLisp/CLOS. It provides libraries and editors that make it a powerful environment for music composition. It can also be used for teaching functional and object programming. THE OM 5.2 RELEASE HOSTED ON SOURCEFORGE IS NOT MAINTAINED ANYMORE. IT IS STILL AVAILABLE FOR IT INCLUDES PRELIMINARY ATTEMPTS AT PORTING OM TO LINUX PLATFORMS, WHICH WE BELIEVE COULD STILL BE USEFUL FOR FUTURE PORTS AND DEVELOPMENTS. See the recent OM 6 developments and release at http://repmus.ircam.fr/openmusic/
Arylon is a lisp-based game engine for rapid prototying and development of tilebased/bitmapped games.
GPL Music Annotation and Publication (well, Jublication anyway) software just for composing and midi-entering music, and printing music sheets. It is a composition and score editor, nothing more.
elmake is a way to provide makefiles for elisp packages (for emacs) which are processed completely in Elisp (no external autoconf, make etc. required). For info files, an external makeinfo is suggested, as elisp parsing of info files is slow.