wasmer: A Rust repository from olonho

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.

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

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/C++	`wasmer.h` 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
Elixir	`wasmex` hex package	Learn
R	no published package	Learn
Postgres	no published package	Learn
Swift	no published package
Zig	no published package
Dart	`wasm` pub package