Captain Chords - Write chord progressions in your favorite DAW
Odesi - ODESI is a music sketchpad that exports your projects to Audio and MIDI.
RapidComposer - MusicDevelopments RapidComposer: Music Prototyping and Automated Composition Software
Orb Composer S - Orb is a music composition Artificial Intelligence.
Hookpad - Web-based music composition that greatly simplifies writing chord progressions and melodies
Harmony Improvisator - Harmony Improvisator is the most advanced harmonic composition tool on the market.