wasmi-labs/wasmi
Some data may be outdated — see provenance labels.
WebAssembly (Wasm) Interpreter - An efficient, lightweight, and deterministic WebAssembly interpreter for embedded systems and plug-in runtimes. observed · 2026-10-03
Health v2 · maintenance only
96/100
- Activity 96
- Release rhythm 93
- Longevity 100
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-10-21. Adoption (stars, forks) is never an input.
- gap_med: 2
- age_days: 3193
- days_rel: 49
- days_push: 29
- n_releases_24m: 40
Adoption not part of the score
2317 stars · 370 forks observed · 2026-10-03
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
Wasmi is an efficient, lightweight WebAssembly interpreter written in Rust, focused on constrained and embedded (no_std) environments. It offers 100% Wasm spec testsuite compliance, fuel metering, sandboxed deterministic execution, and an API loosely mirroring Wasmtime for drop-in replacement.
Use cases
- run webassembly modules on embedded systems
- sandbox untrusted wasm code safely
- embed a wasm interpreter in a rust application
- replace wasmtime with a lighter interpreter
- execute wasm with fuel metering for metered execution
- run webassembly in no_std environments
When to choose
- you need a lightweight, audited wasm interpreter for embedded or constrained targets
- you want deterministic, sandboxed wasm execution with fuel metering
- you need a Wasmtime-like API without a JIT compiler
When to avoid
- you need maximum wasm execution throughput, where a JIT compiler like Wasmtime is faster
- you need a full wasm runtime with extensive host tooling beyond interpretation
Facets
library · maturity active
interpreter wasm security embedded web-development embedded-systems developer-tools security rust embedded cross-platform wasm wasm-runtime virtual-machine fuel-metering no-std wasi drop-in-wasmtime-replacement sandbox no_std
3 sources
- readme: https://github.com/wasmi-labs/wasmi · fetched 2026-10-03 · 65da1098fc94
- homepage: https://wasmi-labs.github.io/wasmi/ · fetched 2026-08-29 · 44136fa355b3
- registry_crates: https://crates.io/api/v1/crates/wasmi · fetched 2026-08-29 · 0905570e169e
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| wasmi-labs/wasmi | main | 96 |
For agents
markdown · JSON · MCP: product_card(name="wasmi-labs/wasmi")
Data as of 2026-10-19T08:05:51.212177+00:00 · Report a problem