Ocean beta - Make music with friends in your browser
VideoScribe - Make your own whiteboard video animations with Sparkol VideoScribe – award-winning video scribing app for PC, Mac and iPad. Free trial available.
iO-808 - Rhythm composer modeled after Roland's TR-808 drum machine.
GoAnimate - Make your own animation quickly and economically with GoAnimate. Reach prospects and customers with animated videos online about your business and products.
Music Box Fun - Make and share music box songs online
Blender - Blender is the open source, cross platform suite of tools for 3D creation.