Physics Engine GitHub Repositories (2026) · Open Source Tools

High-performance C++ library for multiphysics and multibody dynamics simulations

A multi core friendly rigid body physics and collision detection library. Written in C++. Suitable for games and VR applications. Used by Horizon Forbidden West and Death Stranding 2.

Webots Robot Simulator

Fast, simple to use, and dependency-free physics engine written in C# with a clear and user-friendly API.

JoltPhysics C# bindings

ALIEN is a CUDA-powered artificial life simulation program.

High-performance C++ multibody dynamics/physics library for simulating articulated biomechanical and mechanical systems like vehicles, robots, and the human skeleton.

:video_game: Visual Pinball Engine for Unity

Wayland compositor in C/wlroots where windows are physical objects (real Box2D rigid bodies) — and a full desktop besides: ten desktops on one scrolling world, tiling or floating per desktop, launcher, expo, screenshots, mixer and visualiser built in, live IPC. Legacy X11 version on the x11 branch.

DART: Dynamic Animation and Robotics Toolkit