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
VJmachine - Music Visualizer - Make a VJ show like a PRO. Music visualizer for a unique tight symbiosis of sound and video.
Plane9 - Plane9 is a revolutionary 3d visualizer where you never have to settle for just one view ever again.
Morphyre - Animated, 3D Music Visualization with thousands of unique scenes.