OpenGL Headline News
Gravit is a free gravity simulator which runs under Linux, Win32 and Mac OS X. It uses simple newtonian physics using the Barnes-Hut N-body algorithm to be as accurate as possible. But it also creates beautiful looking gravity patterns. It records the history of each particle so it can animate and display a path of its travels. At any stage you can rotate your view in 3D and zoom in and out. Gravit uses the OpenGL API with Lua, SDL, SDL_ttf and SDL_image. The new v0.4.0 allows slow motion replays and new Lua scriptability.