# wazero/wazero

wazero: the zero dependency WebAssembly runtime for Go developers

Repository: https://github.com/wazero/wazero
Canonical: https://ross.abutalabs.com/products/wazero
Homepage: https://wazero.io
Language: Go
License: Apache-2.0
License Family: permissive
Topics: golang, go, wasm, wasi, runtime, webassembly, compiler, ahead-of-time, vm
Last push: 2026-08-24T12:17:37+00:00

## Health v2 (maintenance only)
Score: 90/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 99, release rhythm 74, longevity 100
- inputs: {"age_days": 2312, "days_push": 9, "days_rel": 96, "gap_med": 85, "n_releases_24m": 6}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 6344, forks 344 (observed 2026-08-28T04:09:41.862755+00:00)

## What it is
wazero is a zero-dependency WebAssembly runtime written in pure Go, supporting the WebAssembly Core Specification 1.0 and 2.0 with both an interpreter and an ahead-of-time compiler. It lets Go applications safely execute Wasm modules compiled from any language without CGO, preserving cross-compilation.

## Use cases
- run webassembly modules in a go application
- extend a go app with plugins written in other languages
- sandbox untrusted wasm code without cgo dependencies
- run .wasm binaries from the command line
- embed a wasm runtime that keeps go cross-compilation working
- execute wasm on platforms like riscv64 via the interpreter

## When to choose
- you need a pure-Go WebAssembly runtime with zero dependencies and no CGO
- you want to sandbox and run guest code from C, Rust, or TinyGo inside a Go host
- cross-compilation of your Go binary must be preserved
- you need WASI support and spec-compliant Wasm 1.0/2.0 execution

## When to avoid
- you need a general-purpose JavaScript runtime or non-Wasm sandboxing
- you require Wasm features beyond the 2.0 core specification
- your project is not in Go and you want bindings for another language

## Facets
- artifact type: library
- maturity: stable
- function: interpreter, compiler
- domain: developer-tools, cross-platform
- platform: go, windows, cli, cross-platform
- tags: wasm-runtime, zero-dependency, no-cgo, wasi, aot-compilation, embeddable, sandbox, webassembly, linux, macos

## Member repositories
- wazero/wazero (main) score 90

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:09:41.862755+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:46:08.431740+00:00, confidence not recorded.
  - readme: https://github.com/wazero/wazero (fetched 2026-08-28T04:09:41.862755+00:00, sha ec870347872b)
  - homepage: https://wazero.io (fetched 2026-08-29T08:42:27.176690+00:00, sha 75062e04bb5a)
  - site_page: https://wazero.io/docs (fetched 2026-08-29T08:42:27.185497+00:00, sha 48b2b707f473)
- Data as of 2026-08-30T08:39:29.467469+00:00.