VArranger - vArranger is a PC arranger software, playing Yamaha, Roland and Ketron styles in realtime !
Captain Chords - Write chord progressions in your favorite DAW
nimbu - nimbu is the arranger, to play characteristic accompaniments. Accompaniments that allow the title to sound and to be recognized without melody. This arranger performs the way music works. In realtime.
RapidComposer - MusicDevelopments RapidComposer: Music Prototyping and Automated Composition Software
Real-time Style Performer - The Real-time Style Performer (RSP) gives you the ability to play musical styles created for Yamaha...
Cthulhu - VST MIDI-FX plugin for harmonic inspiration