TORCS!

SuperTuxKart is a free 3D kart racing game; we want to make the game fun more than we want to make it realistic. You can play with up to 4 friends on one PC, racing against each other or just try to beat the computer (a network multiplayer feature is planned).

Speed Dreams is a 3d cross-platform, open source motorsport simulation and racing game. It is released under the GNU General Public License (GPL).

Stunt Rally is a racing game with rally style of driving, mostly on gravel.

Trigger Rally is a fast-paced single-player racing game for Linux and Windows.

VDrift is a cross-platform, open source driving simulation made with drift racing in mind. The driving physics engine was recently re-written from scratch but was inspired and owes much to the Vamos physics engine. It is released under the GNU General Public License (GPL) v3. It is currently available for Linux, FreeBSD, Mac OS X and Windows.

Gear.Club is a realistic driving experience, with fully simulated engines, powertrains, suspensions and aerodynamics, offering a full range of customizable exotic cars and gorgeous HD visuals.

Get the new free ultimate online arcade racing game where everything is about reaching the best racing time. Inspired by many racing games. Why we made this game? Because the others don't offered a mobile version.

ACTC Racing is the ultimate racing exeperience. You must to start your career in a TC Pista Mouras in order to progress and run a TC Mouras and then a TC Pista, the previous series before to run in the most competitive and challenging series: the Turismo Carretera.

Forza Motorsport is an open-world racing game featuring stunning realism and a huge collection of real world vehicles.