SuperTuxKart - 3D arcade-style MK-like kart racing game
GeneRally - GeneRally is a simple, moddable, top-down arcade racing game for 1-6 players
Crazy Chicken - Moorhuhn (distributed as Crazy Chicken in English-speaking countries) is a German casual game...
Pixel Wheels - A top-down retro racing game for PC (Linux, macOS, Windows) and Android.
TrackMania - The most popular online PC racing game.
Speed Dreams - Speed Dreams is a 3d cross-platform, open source motorsport simulation and racing game.