Splash for Roblox - Make music, get famous
iO-808 - Rhythm composer modeled after Roland's TR-808 drum machine.
Roland 808303.studio - TR-808 drum machine and TB-303 bass synthesizer emulator
SOUNDS - Discover music with friends
HTML-909 - A classic beat box in your browser.
Beet - Create a video montage of your life’s most authentic moments