SoundGrail - SoundGrail Music App designed for pianists, guitarists, and DJs.
Splice Beat Maker - Make and share beats in your browser
Figure - Propellerhead creates world-class software products and services that inspire music makers and provide the foundation for a worldwide creative musical community.
Type Drummer - Drum by typing
keezy - A colorful soundboard. Play with music.
Sampulator - Make (and record) beats on your keyboard