Jolt Physics vs Matter.js
Which should you use? A side-by-side look at what each one does, who it suits, what it costs, how hard it is to set up, and where each falls short.
Open source · MIT
A C++ library for simulating solid objects, collisions, and physical constraints in games and VR.
Open source · MIT
A JavaScript library for simulating 2D solid objects that collide, bounce and stack in the browser.
The short answer
Choose Jolt Physics if you need…
- C++ game developers who need a physics engine for rigid bodies and collisions
- VR application developers building interactive objects
- Teams that want multithreaded physics updates and background collision queries
- Developers who need deterministic simulation for replicating state across clients by sending inputs
Choose Matter.js if you need…
- Web developers adding physics-based motion to a canvas or web page
- Hobbyists building small 2D browser games or interactive demos
- Students learning how rigid body physics works in code
- Developers who need a lightweight 2D engine with no native dependencies
Side-by-side
| Jolt Physics | Matter.js | |
|---|---|---|
| Type | Library | Library |
| Price | Free and open source | Free and open source |
| Licence | MIT | MIT |
| GitHub stars | 12.1k | 18.6k |
| Setup difficulty | Advanced | Intermediate |
| How you get it | Clone and build from source | Install with a package manager |
| Main language | C++ | JavaScript |
| Last code update | 5 days ago | 37 days ago |
What each one is
Jolt Physics
Jolt Physics is a C++ library that calculates how rigid objects move, bump into each other, and connect through joints. Game and VR developers add it to their projects so their worlds behave physically without writing that math themselves. The README says it is designed to spread work across multiple CPU cores and to be used mainly for games or VR simulations rather than exact real-world engineering.
Matter.js
Matter.js is a JavaScript library that simulates how flat (2D) solid objects move, collide, bounce and rest on each other, such as boxes falling onto a pile or balls rolling down a ramp. Developers add it to a web page to make interactive scenes, games or animations feel physical. It runs in browsers and in Node.js, and the README describes it as an original implementation rather than a port of another engine.
Best for
Jolt Physics
- C++ game developers who need a physics engine for rigid bodies and collisions
- VR application developers building interactive objects
- Teams that want multithreaded physics updates and background collision queries
- Developers who need deterministic simulation for replicating state across clients by sending inputs
Matter.js
- Web developers adding physics-based motion to a canvas or web page
- Hobbyists building small 2D browser games or interactive demos
- Students learning how rigid body physics works in code
- Developers who need a lightweight 2D engine with no native dependencies
Strengths
Jolt Physics
- The README describes multi-core friendly design, including background loading and parallel collision queries
- Broad feature set listed in the README, covering shapes, constraints, vehicles, character controllers, and soft bodies
- Released under the MIT license, which the metadata lists
Matter.js
- MIT licensed and free to use in commercial and personal projects
- Broad feature set including constraints, collision events, sleeping bodies and time scaling
- Large set of published demos and examples to learn from
Not ideal for
Jolt Physics
- Developers who need a ready-made editor or game engine, since the README describes only a library
- Projects that must use a language other than C++ without a binding, since the README points to a separate WebAssembly project only
- Engineering or scientific work needing exact real-world accuracy, because the README says it makes approximations for games and VR
Matter.js
- People needing 3D physics, since the README describes only a 2D engine
- Projects requiring highly realistic soft materials or fluids, as the feature list centers on rigid bodies
- Non-programmers looking for a ready-made app, since it is a library to write code with
Trade-offs
Jolt Physics
- The README is long and assumes C++ knowledge; the samples and API docs are needed to learn it
- Some features have stated limits, such as hair collision supporting only convex hulls and compound shapes
- Latest release is listed without binaries, so integration means building from source
Matter.js
- Limited to 2D physics according to the README
- The README notes bundler configs such as Webpack and Vue watchers can slow performance in development
- The README lists no formal release version, so you rely on the master branch or tags
Getting started
Jolt Physics
Clone the repository
git clone https://github.com/jrouwe/JoltPhysics.gitFrequently asked questions
What is the difference between Jolt Physics and Matter.js?
Jolt Physics: A C++ library for simulating solid objects, collisions, and physical constraints in games and VR. Matter.js: A JavaScript library for simulating 2D solid objects that collide, bounce and stack in the browser. Jolt Physics suits c++ game developers who need a physics engine for rigid bodies and collisions, while Matter.js suits web developers adding physics-based motion to a canvas or web page.
Are Jolt Physics and Matter.js free?
Jolt Physics: Free and open source. Matter.js: Free and open source.
Which is easier to set up, Jolt Physics or Matter.js?
Matter.js is easier to get started with (rated intermediate); Jolt Physics is rated advanced and usually needs more setup.
Is Jolt Physics or Matter.js more popular?
Matter.js has more GitHub stars (18.6k) than Jolt Physics (12.1k). Popularity isn't the same as fit — check which one matches your use case above.
What are other alternatives to Jolt Physics and Matter.js?
Other options people compare them with include Box2D, A-Frame, EnTT, Flame, PlayCanvas.
Keep comparing
Built from our catalogue entries for both products: open-source details come from each project's README (AI-assisted, refreshed weekly) and GitHub data; AI-tool details are editorial. Spotted something wrong? Let us know from either product's page.