Backlight: BACKLIGHT is a photorealistic relativistic visualisation system. Developed at the Australian National University by undergraduate student Antony Searle , it produces images and videos demonstrating the optical effects of special relativity.
Virtual Relativity: A project to create a computer program that simulates relativistic motion. Free Download for Windows 9.x , Silicon Graphics, and soon Linux.
Relativistic Starflight: The program xrel depicts, as realistically as possible, the appearance of stars as seen from a starship moving at speeds close to the speed of light.
The Cactus Code: A modular manageable high-performance 3D tool for Numerical Relativity.