Open source alternatives to Wasmer

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

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

Install Wasmer

curl https://get.wasmer.io -sSfL | sh

Other installation options (Powershell, Brew, Cargo, ...)

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

Powershell (Windows)
```
iwr https://win.wasmer.io -useb | iex
```

Homebrew (macOS, Linux)
```
brew install wasmer
```
Scoop (Windows)
```
scoop install wasmer
```
Chocolatey (Windows)
```
choco install wasmer
```
Cargo binstall
```
cargo binstall wasmer-cli
```
Cargo

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

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

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

Quickstart

You can start by running Cowsay:

$ wasmer run cowsay "hello world"

< hello world >

    \   ^__^
     \  (oo)\_______
        (__)\       )\/\
           ||----w |
            ||     ||</pre>

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:

Language Package Documentation

Rust wasmer Rust crate Learn

C wasm.h header Learn

C++ wasm.hh header Learn

C# WasmerSharp NuGet package Learn

D wasmer Dub package Learn

Python wasmer PyPI package Learn

Javascript @wasmerio NPM packages Learn

Go wasmer Go package Learn

PHP wasm PECL package Learn

Ruby wasmer Ruby Gem Learn

Java wasmer/wasmer-jni Bintray package Learn

R no published package Learn

Postgres no published package Learn

Swift no published package

Zig no published package

Dart wasm pub package

Crystal no published package Learn

Lisp no published package

Julia no published package

V no published package

OCaml wasmer OCaml package

👋 Missing a language?

Contribute

We appreciate your help! 💜

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.

Community

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

README also in: 🇨🇳 中文 -Chinese • 🇩🇪 Deutsch-German • 🇪🇸 Español-Spanish • 🇫🇷 Français-French • 🇯🇵 日本語 -Japanese • 🇰🇷 한국어 -Korean.

Wasmer

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