Tinkersynth - Create and purchase unique generative art
keezy - A colorful soundboard. Play with music.
Sampulator - Make (and record) beats on your keyboard
Figure - Propellerhead creates world-class software products and services that inspire music makers and provide the foundation for a worldwide creative musical community.
Splice Beat Maker - Make and share beats in your browser
Splice - Music creation, collaboration, and sharing made simple.