Moshpyt - Music collaboration & monetization
Bandlab - Capture, nurture, and collaborate on song ideas in the cloud
My Music Moments - A community of music curators and producers
Krue - Twitch for music: live streams from amazing musicians
Spotlight - With Spotlight, you can find apps, documents, and other files on your Mac. And with Spotlight Suggestions, you can also get news, sports, movies, weather, and more.
Soundscape - Sync your music with the open source community