The Physics Engine Software solutions below are the most common alternatives that users and reviewers compare with PhysX. Other important factors to consider when researching alternatives to PhysX include performance. The best overall PhysX alternative is Bullet. Other similar apps like PhysX are Box2D, Havok, BeamNG, and PhysicsJS. PhysX alternatives can be found in Physics Engine Software.
Bullet is a physics engine which stimulates collision detection, soft and rigid body dynamics, soft body support, and more.
Box2D is an open source C++ engine for simulating bodies in 2D that has features in collision, physics, system, testbed, and documentation.
Havok is a collision detection and physical stimulation technology for interactive software for digital media creators in games and movie industries.
A modular, extendable, and easy-to-use physics engine for javascript
Matali Physics is an advanced, multi-platform, high-performance 3d physics engine intended for games, virtual reality and physics-based simulations. Matali Physics and add-ons form physics environment which provides complex physical simulation and physics-based modeling of objects both real and imagined.