Find A Maker - find a partner for your next project
Bandlab - Capture, nurture, and collaborate on song ideas in the cloud
CoFoundersLab - Meet 250,000+ entrepreneurs online
Krue - Twitch for music: live streams from amazing musicians
Y Combinator Co-founder Matching - YC’s free online platform to help you find your co-founder
Soundscape - Sync your music with the open source community