MIDI Visualizer - Small cross-platform MIDI visualizer written in C++/OpenGL
Piano Visualizer - Bring your piano music to life with this application.
MIDITrail - "MIDITrail" is a MIDI player which provides 3D visualization of MIDI datasets.
Euphony - Euphony is a web-based MIDI player and visualizer.
Lifeblood Live Wallpaper - Float along in a stylized real-time 3D vein full of red blood cells!
Music Animation Machine MIDI Player - MIDI player with main purpose of displaying elaborate analyzing visualizations