Plane9 - Plane9 is a revolutionary 3d visualizer where you never have to settle for just one view ever again.
MilkDrop - 3D audio visualization plugin, compatible with WinAmp plugin API
projectM - projectM is an LGPL'ed reimplementation of Milkdrop under OpenGL.
Magic Music Visuals - Fully-customizable and highly responsive visuals for live and recorded audio & MIDI.
Avee Player - Avee Music Player for Android
Morphyre - Animated, 3D Music Visualization with thousands of unique scenes.