Here are the VEOS and the VEL virtual reality systems. Both are very high quality, fully functional, and written in C. Both, however, are antiquated in their use of peripherals, (graphics engines, position trackers, MIDI i/o, etc.). In 1995, for example, the VEL system used $50,000 Kubota graphics engines with considerably less power than a Playstation II.

VEOS was written at HITL in 1991-3, by dozens of graduate students lead by Geoff Coco and Andy MacDonald. See the enclosed documentation. VEL was written at a now defunct start-up during 1995 by Andy MacDonald, Colin Bricken, Leo Catallo, and John Feiler. I directed both projects.