head to head · open source
Babylon.js vs colyseus
Babylon.js has 26,087 GitHub stars, 3,687 forks, 22 open issues and last shipped 2 days ago. colyseus has 7,311 stars, 665 forks, 19 open issues and last shipped today. Babylon.js leads on adoption by 257% (26,087 vs 7,311 stars). Babylon.js is written in TypeScript under Apache-2.0; colyseus is written in TypeScript under MIT. Babylon.js has attracted 14% as many forks as stars, colyseus 9%. colyseus was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| Babylon.js | colyseus | |
|---|---|---|
| GitHub stars | ★ 26K | ★ 7.3K |
| License | Apache-2.0 | MIT |
| Written in | TypeScript | TypeScript |
| Last push | 2026-09-18 | 2026-09-20 |
| Forks | ⑂ 3.7K | ⑂ 665 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Babylon.js if
- You weight community size — 26K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick colyseus if
- You want the colyseus feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and colyseus fits your workflow better
About Babylon.js
Babylon.js is an open source, Apache 2.0 licensed 3D game and rendering engine written in TypeScript, built for JavaScript and TypeScript developers who want to create browser based 3D games, visualizations and WebXR experiences inside a friendly JavaScript framework.
read the full Babylon.js overview →
About colyseus
Colyseus is an MIT licensed authoritative multiplayer framework for Node.js that provides synchronizable data structures, room based matchmaking, and client SDKs for TypeScript, React, Unity, Godot, GameMaker, Defold, Construct, Haxe, and C, aimed at developers building realtime and turn based multiplayer games.
read the full colyseus overview →
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Frequently asked questions
Is Babylon.js or colyseus more popular?
Babylon.js has 26,087 GitHub stars and colyseus has 7,311. Babylon.js has the larger community by that measure.
Are Babylon.js and colyseus free?
Both are open source. Babylon.js is licensed under Apache-2.0 and colyseus under MIT. Neither carries a licence fee.
What is the difference between Babylon.js and colyseus?
Babylon.js is written in TypeScript and colyseus in TypeScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Babylon.js or colyseus?
Choose Babylon.js if you want the larger community (26,087 stars) or its Apache-2.0 licence terms. Choose colyseus if its feature set, stack or MIT licence fits better. Both are self-hostable.