Pianu - Learn to play the piano in your browser.
keezy - A colorful soundboard. Play with music.
Flowkey - The easiest way to learn piano with your iPhone or iPad
SoundGrail - SoundGrail Music App designed for pianists, guitarists, and DJs.
Joytunes - Learn music through mobile games
Aftertouch - Aftertouch – 3D MIDI Controller created and published by Kevin Nelson.