GitPedia

Wasmer

πŸš€ Fast, secure, lightweight containers based on WebAssembly

From wasmerioΒ·Updated June 15, 2026Β·View on GitHubΒ·

Wasmer is a _blazing fast_ and _secure_ [**WebAssembly**](https://webassembly.org) runtime that enables incredibly _lightweight containers_ to run anywhere: from _Desktop_ to the _Cloud_, _Edge_ and your browser. The project is written primarily in Rust, distributed under the MIT License license, first published in 2018. It has gained significant community traction with 20,818 stars and 979 forks on GitHub. Key topics include: emscripten, linux, macos, rust, wasi.

Latest release: v7.2.0-alpha.3β€” Release v7.2.0-alpha.3
<div align="center"> <a href="https://wasmer.io" target="_blank"> <picture> <source srcset="https://raw.githubusercontent.com/wasmerio/wasmer/master/assets/logo-white.png" media="(prefers-color-scheme: dark)"> <img width="300" src="https://raw.githubusercontent.com/wasmerio/wasmer/master/assets/logo.png" alt="Wasmer logo"> </picture> </a> <p> <a href="https://github.com/wasmerio/wasmer/releases"> <img src="https://shields.io/github/v/tag/wasmerio/wasmer" alt="Github release"> </a> <a href="https://github.com/wasmerio/wasmer/blob/main/LICENSE"> <img src="https://img.shields.io/github/license/wasmerio/wasmer.svg" alt="License"> </a> <a href="https://docs.wasmer.io"> <img src="https://img.shields.io/static/v1?label=Docs&message=docs.wasmer.io&color=blue" alt="Wasmer Docs"> </a> <a href="https://discord.gg/rWkMNStrEW"> <img src="https://img.shields.io/discord/1110300506942881873?label=Wasmer&logo=discord&logoColor=white" alt="Wasmer on Discord"> </a> <a href="https://x.com/wasmerio"> <img src="https://img.shields.io/twitter/follow/wasmerio" alt="Wasmer on X"> </a> </p> </div> <br />

Wasmer is a blazing fast and secure WebAssembly runtime that enables incredibly
lightweight containers to run anywhere: from Desktop to the Cloud, Edge and your browser.

  • Secure by default. No file, network, or environment access, unless explicitly enabled.
  • Pluggable. supports WASIX, WASI out of the box.
  • Incredibly Fast. Run WebAssembly at near-native speeds.
  • Embeddable anywhere via Wasmer SDKs

Install Wasmer

sh
curl https://get.wasmer.io -sSfL | sh
<details> <summary>Other installation options (Powershell, Brew, Cargo, ...)</summary>

Wasmer can be installed from various package managers. Choose the one that fits best for your environment:

  • Powershell (Windows)
    powershell
    iwr https://win.wasmer.io -useb | iex
  • <a href="https://formulae.brew.sh/formula/wasmer">Homebrew</a> (macOS, Linux)

    sh
    brew install wasmer
  • <a href="https://github.com/ScoopInstaller/Main/blob/master/bucket/wasmer.json">Scoop</a> (Windows)

    sh
    scoop install wasmer
  • <a href="https://chocolatey.org/packages/wasmer">Chocolatey</a> (Windows)

    sh
    choco install wasmer
  • <a href="https://crates.io/crates/cargo-binstall/">Cargo binstall</a>

    sh
    cargo binstall wasmer-cli
  • <a href="https://crates.io/crates/wasmer-cli/">Cargo</a>

    Note: All the available
    features are described in the wasmer-cli
    crate docs

    sh
    cargo install wasmer-cli

Looking for more installation options? See the wasmer-install
repository
to learn
more!

</details>

Note: You can also try Wasmer online in wasmer.sh

Quickstart

[!Tip]
As part of our commitment to open source, we want to reward all GitHub users. In addition to the free tier, you can get up to $200 in Wasmer Edge credits for your open-source contributions - Claim here.

You can start by running
Cowsay:

bash
$ wasmer run cowsay "hello world" _____________ < hello world > ------------- \ ^__^ \ (oo)\_______ (__)\ )\/\ ||----w | || ||

There are many more available packages, such as wasmer/python or quickjs. Create your own package, or explore packages from the community: https://wasmer.io/explore

Here is what you can do next:

Wasmer SDK

You can use the Wasmer runtime embedded in different
languages
with the Wasmer SDK:

LanguagePackageDocumentation
Rust logoRustwasmer Rust crateLearn
C logoCwasm.h headerLearn
C++ logoC++wasm.hh headerLearn
C# logoC#WasmerSharp NuGet packageLearn
D logoDwasmer Dub packageLearn
Zig logoZigwasmer Zig packageLearn
Python logoPythonwasmer PyPI packageLearn
JS logoJavascript@wasmerio NPM packagesLearn
Go logoGowasmer Go packageLearn
PHP logoPHPwasm PECL packageLearn
Ruby logoRubywasmer Ruby GemLearn
Java logoJavawasmer/wasmer-jni Bintray packageLearn
R logoRno published packageLearn
R logoRno published packageLearn
Postgres logoPostgresno published packageLearn
Swift logoSwiftno published package
Dart logoDartwasm pub package
Crystal logoCrystalno published packageLearn
Lisp logoLispno published package
Julia logoJuliano published package
VLang logoVno published package
Ocaml logoOCamlwasmer OCaml package

πŸ‘‹Β Β Missing a language?

Develop

We have different guides to help you develop Wasmer:

Contribute

We appreciate your help! πŸ’œ

We recommend reading the following guide on how to contribute into a complex project successfully:
https://mitchellh.com/writing/contributing-to-complex-projects

Check our docs on how to build Wasmer from
source
or test your changes.

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Community

Wasmer has an amazing community of developers and contributors. Welcome, please join us! πŸ‘‹


README also in:
πŸ‡¨πŸ‡³ δΈ­ ζ–‡ -Chinese β€’
πŸ‡©πŸ‡ͺ Deutsch-German β€’
πŸ‡ͺπŸ‡Έ EspaΓ±ol-Spanish β€’
πŸ‡«πŸ‡· FranΓ§ais-French β€’
πŸ‡―πŸ‡΅ ζ—₯本 θͺž -Japanese β€’
πŸ‡°πŸ‡· ν•œκ΅­μ–΄ -Korean
.

Contributors

Showing top 12 contributors by commit count.

View all contributors on GitHub β†’

This article is auto-generated from wasmerio/wasmer via the GitHub API.Last fetched: 6/15/2026