projectM - projectM is an LGPL'ed reimplementation of Milkdrop under OpenGL.
MasterpieceVR - Powerful VR sculpting & painting tool
Magic Music Visuals - Fully-customizable and highly responsive visuals for live and recorded audio & MIDI.
Kodon - Kodon is the fastest-growing feature-rich VR sculpting and modeling software designed for professionals who want to do their commercial projects easily and quickly.
Kauna - Kauna is a music visualizer. Kauna renders any sound reproduction in system.
Snap Art - Snap's augmented reality platform