SoundGrail - SoundGrail Music App designed for pianists, guitarists, and DJs.
AMPLI.FI - Live online music community. Twitch for tunes.
Figure - Propellerhead creates world-class software products and services that inspire music makers and provide the foundation for a worldwide creative musical community.
Bandlab - Capture, nurture, and collaborate on song ideas in the cloud
keezy - A colorful soundboard. Play with music.
Twitch Creative - Watch artists create. Twitch expands into the arts.