SoundGrail - SoundGrail Music App designed for pianists, guitarists, and DJs.
keezy - A colorful soundboard. Play with music.
Figure - Propellerhead creates world-class software products and services that inspire music makers and provide the foundation for a worldwide creative musical community.
Splice - Music creation, collaboration, and sharing made simple.
Mixxx - The most powerful free DJ software in the world.
n-Track Studio - Audio recording and music creation app for iOS.