Captain Chords - Write chord progressions in your favorite DAW
AthTek DigiBand - AthTek DigiBand is a piece of automatic music composition software for Windows.
RapidComposer - MusicDevelopments RapidComposer: Music Prototyping and Automated Composition Software
Automated Composing System - ACS creates automated arrangements so you can compose music without musical knowledge.
Cthulhu - VST MIDI-FX plugin for harmonic inspiration
WolframTones - Listen to what I just found in the WolframTones music universe