head to head · open source
three.js vs s&box
three.js has 115,636 GitHub stars, 36,557 forks, 386 open issues and last shipped yesterday. s&box has 6,468 stars, 671 forks, 2,406 open issues and last shipped yesterday. three.js leads on adoption by 1,688% (115,636 vs 6,468 stars). three.js is written in JavaScript under MIT; s&box is written in C# under a custom or non-standard licence. three.js has attracted 32% as many forks as stars, s&box 10%. three.js 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
| three.js | s&box | |
|---|---|---|
| GitHub stars | ★ 116K | ★ 6.5K |
| License | MIT | Custom / other |
| Written in | JavaScript | C# |
| Last push | 2026-09-18 | 2026-09-18 |
| Forks | ⑂ 37K | ⑂ 671 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick three.js if
- You weight community size — 116K stars and counting
- You want the MIT license terms
- Your stack matches JavaScript
- You value the larger contributor base for long-term maintenance
pick s&box if
- You want the s&box feature set and don't need the biggest community
- You prefer the Custom / other license terms
- Your stack matches C#
- You evaluated both and s&box fits your workflow better
About three.js
three.js is an MIT licensed JavaScript 3D library that provides an easy to use, lightweight, cross browser, general purpose layer for rendering interactive 3D graphics in the browser, aimed at JavaScript developers who need 3D scenes on the web without writing raw GPU code.
read the full three.js overview →
About s&box
s&box is a modern game engine built on Valve's Source 2 and the latest .NET technology, offering a modern intuitive editor for creating games, and it is aimed at game creators who want to build and play games inside an engine that runs live, alongside the contributors who compile the engine itself from source.
read the full s&box overview →
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Frequently asked questions
Is three.js or s&box more popular?
three.js has 115,636 GitHub stars and s&box has 6,468. three.js has the larger community by that measure.
Are three.js and s&box free?
Both are open source. three.js is licensed under MIT, and s&box has no licence declared in this registry. Both are free to self-host.
What is the difference between three.js and s&box?
three.js is written in JavaScript and s&box in C#. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, three.js or s&box?
Choose three.js if you want the larger community (115,636 stars) or its MIT licence terms. Choose s&box if its feature set, stack or Custom / other licence fits better. Both are self-hostable.