Captain Chords - Write chord progressions in your favorite DAW
Bandlab - Capture, nurture, and collaborate on song ideas in the cloud
Odesi - ODESI is a music sketchpad that exports your projects to Audio and MIDI.
Krue - Twitch for music: live streams from amazing musicians
Cthulhu - VST MIDI-FX plugin for harmonic inspiration
Vampr - Connect with musicians, industry & music lovers alike