(in alphabetical order)
By Artsong. Algorithmic Composition Software.
By Karlheinz Essl. Tools for composition, live performance and sound design. Based on concepts of realtime and algorithmic composition.
By Cycling 74. Visual programming language for music and multimedia.
By IRCAM Music Representation research group. Visual programming language based on Lisp.
By Avid. Lessons & composition projects for students.
James McCartney. Programming language for real time audio synthesis and algorithmic composition.