Captain Chords - Write chord progressions in your favorite DAW
Chord NOTE - Easily find the right chords to match a melody or musical phrase.
RapidComposer - MusicDevelopments RapidComposer: Music Prototyping and Automated Composition Software
Plugin Boutique - Inspirational MIDI effect that makes finding chords and progressions intuitive and fun
Odesi - ODESI is a music sketchpad that exports your projects to Audio and MIDI.
Chord Pad - Whether you are a composer producer or just want an new way of practicing your instrument this application is for you.