klaep - music collaboration - klaep is a social music collaboration network for musicians
keezy - A colorful soundboard. Play with music.
Madsounds - It’s like Discover Weekly, but daily.
Aftertouch - Aftertouch – 3D MIDI Controller created and published by Kevin Nelson.
MisterJack - Make and share playlists
SoundGrail - SoundGrail Music App designed for pianists, guitarists, and DJs.