AthTek DigiBand - AthTek DigiBand is a piece of automatic music composition software for Windows.
Captain Chords - Write chord progressions in your favorite DAW
Automated Composing System - ACS creates automated arrangements so you can compose music without musical knowledge.
RapidComposer - MusicDevelopments RapidComposer: Music Prototyping and Automated Composition Software
TrebleMaker - Procedurally generated, royalty-free MIDI compositions
Cthulhu - VST MIDI-FX plugin for harmonic inspiration