Racer for Mac

Racer is a free cross-platform car simulation project (for non-commercial use), using professional car physics papers to achieve a realistic feeling. Cars, tracks and such can be created relatively easy (compared to other, more closed, driving simulations). The 3D and other file formats are, or should be, documented. Editors and support programs are also available to get a very customizable and expandable simulator. OpenGL is used for rendering.