head to head · open source
bevy vs wasmi
bevy has 49,474 GitHub stars, 5,010 forks, 3,418 open issues and last shipped 4 days ago. wasmi has 2,341 stars, 379 forks, 48 open issues and last shipped yesterday. bevy leads on adoption by 2,013% (49,474 vs 2,341 stars). bevy is written in Rust under Apache-2.0; wasmi is written in Rust under Apache-2.0. bevy has attracted 10% as many forks as stars, wasmi 16%. wasmi was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (game-engine), so they are genuine substitutes rather than adjacent tools.
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
| bevy | wasmi | |
|---|---|---|
| GitHub stars | ★ 49K | ★ 2.3K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Rust | Rust |
| Last push | 2026-10-30 | 2026-11-02 |
| Forks | ⑂ 5.0K | ⑂ 379 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick bevy if
- You weight community size — 49K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Rust
- You value the larger contributor base for long-term maintenance
pick wasmi if
- You want the wasmi feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Rust
- You evaluated both and wasmi fits your workflow better
About bevy
What is Bevy? Bevy is a refreshingly simple data driven game engine built in Rust. It is free and open source forever! WARNING Bevy is still in the early stages of development. Important features are missing. Documentation is sparse. A new version of Bevy containing breaking changes to the API is released approximately once every 3 months. We provide migration guides, but we can't guarantee migrations will always be easy. Use only if you are willing to work in this environment. MSRV: Bevy relies heavily on improvements in the Rust language and compiler. As a result, the Minimum Supported Rust Version (MSRV) is…
About wasmi
[1]: [2]: [3]: [4]: [5]: [6]: [7]: [8]: [license mit badge]: [license apache badge]: Wasmi WebAssembly (Wasm) Interpreter Wasmi is an efficient and lightweight WebAssembly interpreter with a focus on constrained and embedded systems. Distinct Features Simple, correct and deterministic execution of WebAssembly. Efficient and cross platform WebAssembly runtime for no std embedded environments. Compiler/JIT bomb resisting translation. Loosely mirrors the Wasmtime API to act as drop in replacement. 100% WebAssembly spec testsuite compliance. Built in support for fuel metering. Supports the official Wasm C API…
read the full wasmi overview →
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Frequently asked questions
Is bevy or wasmi more popular?
bevy has 49,474 GitHub stars and wasmi has 2,341. bevy has the larger community by that measure.
Are bevy and wasmi free?
Both are open source. bevy is licensed under Apache-2.0 and wasmi under Apache-2.0. Neither carries a licence fee.
What is the difference between bevy and wasmi?
bevy is written in Rust and wasmi in Rust. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, bevy or wasmi?
Choose bevy if you want the larger community (49,474 stars) or its Apache-2.0 licence terms. Choose wasmi if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.