projectM - projectM is an LGPL'ed reimplementation of Milkdrop under OpenGL.
Tilt Brush - Paint in spaces around you with Virtual Reality
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.
A-Painter - Paint in VR in your Browser