Madeon's Adventure Machine - Online remixing tool
keezy - A colorful soundboard. Play with music.
The Wub Machine - Turn any music into Dubstep, Drum & Bass, and more.
SoundGrail - SoundGrail Music App designed for pianists, guitarists, and DJs.
Serato DJ - Serato DJ is award winning, digital DJing software used by professionals across the globe.
Aftertouch - Aftertouch – 3D MIDI Controller created and published by Kevin Nelson.