wasmer: A Rust repository from codymullins

Wasmer is a fast and secure WebAssembly runtime that enables super lightweight containers to run anywhere: from Desktop to the Cloud, Edge and IoT devices.

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

Features

Secure by default. No file, network, or environment access, unless explicitly enabled.
Supports WASI and Emscripten out of the box.
Fast. Run WebAssembly at near-native speeds.
Embeddable in multiple programming languages
Compliant with latest WebAssembly Proposals (SIMD, Reference Types, Threads, ...)

Install

Wasmer CLI ships as a single executable with no dependencies.

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!

Quickstart

You can start by running QuickJS, a small and embeddable Javascript engine compiled as a WebAssembly module (qjs.wasm):

$ wasmer qjs.wasm
QuickJS - Type "\h" for help
qjs > const i = 1 + 2;
qjs > console.log("hello " + i);
hello 3

Here is what you can do next:

📦 Language Integrations

The Wasmer runtime can be used as a library embedded in different languages, so you can use WebAssembly anywhere.

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.

Bounties

For some issues we offer paid bounties. You'll get paid automatically as soon as your PR solving the issue is merged!

Community

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

codymullins/wasmer