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<img src="https://github.com/wasmerio/wasmer/workflows/build/badge.svg?style=flat-square" alt="Build Status">
</a>
<a href="https://github.com/wasmerio/wasmer/blob/master/LICENSE">
<img src="https://img.shields.io/github/license/wasmerio/wasmer.svg?style=flat-square" alt="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://slack.wasmer.io">
<img src="https://img.shields.io/static/v1?label=Slack&message=join%20chat&color=brighgreen&style=flat-square" alt="Slack channel">
<img src="https://img.shields.io/static/v1?label=Slack&message=join%20us!&color=brighgreen" alt="Slack channel">
</a>
</p>

<h3>
<a href="https://wasmer.io/">Website</a>
<span> • </span>
<a href="https://docs.wasmer.io">Docs</a>
<span> • </span>
<a href="https://slack.wasmer.io/">Chat</a>
</h3>

</div>

<br />

[Wasmer](https://wasmer.io/) is a runtime that enables super
lightweight containers based on [WebAssembly](https://webassembly.org)
Wasmer is a runtime that enables super
_lightweight containers_ based on [**WebAssembly**](https://webassembly.org)
to run anywhere: from Desktop to the Cloud and IoT devices, and also
embedded in [*numerous programming
language*](https://github.com/wasmerio/wasmer#language-integrations).
embedded in *multiple programming
languages*.

_This document is also available in:
[🇨🇳 中 文 -Chinese](https://github.com/wasmerio/wasmer/blob/master/docs/cn/README.md),
[🇪🇸 Español-Spanish](https://github.com/wasmerio/wasmer/blob/master/docs/es/README.md),
[🇫🇷 Français-French](https://github.com/wasmerio/wasmer/blob/master/docs/fr/README.md),
> _This document is also available in:
[🇨🇳 中 文 -Chinese](https://github.com/wasmerio/wasmer/blob/master/docs/cn/README.md)
[🇪🇸 Español-Spanish](https://github.com/wasmerio/wasmer/blob/master/docs/es/README.md)
[🇫🇷 Français-French](https://github.com/wasmerio/wasmer/blob/master/docs/fr/README.md)
[🇯🇵 日本 語 -Japanese](https://github.com/wasmerio/wasmer/blob/master/docs/ja/README.md)_.

## ✨ Features

* **Fast & Safe**. Wasmer runs WebAssembly at _near-native_ speed in a
fully sandboxed environment.

* **Pluggable**. To best suit your needs, Wasmer supports different
compilation strategies (_aka_ the compilers — based on LLVM, based
on Cranelift, or Singlepass) and artifact strategies (_aka_ the
engines — Universal, Dylib, Staticlib).

* **Universal**. You can run Wasmer on any _platform_ (Linux, macOS
and Windows) and _chipset_.

* **Standards compliant**. The runtime passes [official WebAssembly
test suite](https://github.com/WebAssembly/testsuite) supporting
[WASI](https://github.com/WebAssembly/WASI) and
[Emscripten](https://emscripten.org/).

## 🏁 Quickstart

The quickest way to get fun with Wasmer is to install its CLI. It
ships with no dependency. Let's first start by installing it, then
let's see how to execute a WebAssembly file.
### Features

### Installing the Wasmer CLI
* Secure by default. No file, network, or environment access, unless explicitly enabled.
* Supports [WASI](https://github.com/WebAssembly/WASI) and [Emscripten](https://emscripten.org/) out of the box.
* Fast. Run WebAssembly at near-native speeds.
* Compliant with latest WebAssembly Proposals (SIMD, Reference Types, Threads, ...)

Wasmer can be installed from various package managers, scripts, or
built from sources… Pick what is best for you:
### Install

* <details>
<summary>With <code>curl</code></summary>
Wasmer CLI ships as a single executable with no dependencies.

This is kind of the universal way to install Wasmer. If you don't
trust this approach, please see other installation options.

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

</details>

* <details>
<summary>With PowerShell</summary>
```sh
curl https://get.wasmer.io -sSfL | sh
```

This installation process is dedicated to Windows users:

<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
```
</details>

* <details>
<summary>With <a href="https://formulae.brew.sh/formula/wasmer">Homebrew</a></summary>

Homebrew is mainly a package manager for macOS:
* <a href="https://formulae.brew.sh/formula/wasmer">Homebrew</a> (macOS, Linux)
```sh
brew install wasmer
```
</details>

* <details>
<summary>With <a href="https://github.com/ScoopInstaller/Main/blob/master/bucket/wasmer.json">Scoop</a></summary>

Scoop is a package manager for Windows:
* <a href="https://github.com/ScoopInstaller/Main/blob/master/bucket/wasmer.json">Scoop</a> (Windows)
```sh
scoop install wasmer
```
</details>

* <details>
<summary>With <a href="https://chocolatey.org/packages/wasmer">Chocolatey</a></summary>

Chocolatey is a package manager for Windows:
* <a href="https://chocolatey.org/packages/wasmer">Chocolatey</a> (windows)
```sh
choco install wasmer
```
* <a href="https://crates.io/crates/wasmer-cli/">Cargo</a>
</details>

* <details>
<summary>With <a href="https://crates.io/crates/wasmer-cli/">Cargo</a></summary>

Cargo is the crate installer for Rust.

The following command will install `wasmer-cli`. All the available
_Note: All the available
features are described in the [`wasmer-cli`
documentation](https://github.com/wasmerio/wasmer/tree/master/lib/cli/README.md).
crate docs](https://github.com/wasmerio/wasmer/tree/master/lib/cli/README.md)_
```sh
cargo install wasmer-cli
```
</details>

* <details>
<summary>From source</summary>

Inside the root of this repository (in this case, you're likely to
need some dependencies):
```sh
make build-wasmer
```
[Read the
documentation](https://docs.wasmer.io/ecosystem/wasmer/building-from-source)
to learn more about this approach.
</details>
* More installation options? See [the `wasmer-install`
> Looking for more installation options? See [the `wasmer-install`
repository](https://github.com/wasmerio/wasmer-install) to learn
more!
</details>
### Executing a WebAssembly file
After installing Wasmer you should be ready to execute your first WebAssembly file! 🎉
### Quickstart
You can start by running
[QuickJS](https://github.com/bellard/quickjs/), which is a small and
embeddable Javascript engine, compiled as a WebAssembly module,
[`qjs.wasm`](https://registry-cdn.wapm.io/contents/_/quickjs/0.0.3/build/qjs.wasm):
[QuickJS](https://github.com/bellard/quickjs/), a small and
embeddable Javascript engine compiled as a WebAssembly module ([`qjs.wasm`](https://registry-cdn.wapm.io/contents/_/quickjs/0.0.3/build/qjs.wasm)):
```bash
$ wasmer qjs.wasm
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hello 3
```

### Discover
Here are some clues about what you can do next:
#### Here is what you can do next:

- [Use Wasmer from your Rust application](https://docs.wasmer.io/integrations/rust),
- [Publish a Wasm package on WAPM](https://docs.wasmer.io/ecosystem/wapm/publishing-your-package),
- [Read more about Wasmer](https://medium.com/wasmer/).
- [Use Wasmer from your Rust application](https://docs.wasmer.io/integrations/rust)
- [Publish a Wasm package on WAPM](https://docs.wasmer.io/ecosystem/wapm/publishing-your-package)
- [Read more about Wasmer](https://medium.com/wasmer/)

## 📦 Language Integrations

Expand All @@ -207,7 +135,7 @@ languages**, so you can use WebAssembly _anywhere_.
| | [**Swift**][Swift integration] | *no published package* | |
| ![Zig logo] | [**Zig**][Zig integration] | *no published package* | |

[👋 Missing a language?](https://github.com/wasmerio/wasmer/issues/new?assignees=&labels=%F0%9F%8E%89+enhancement&template=---feature-request.md&title=)
[👋&nbsp;&nbsp;Missing a language?](https://github.com/wasmerio/wasmer/issues/new?assignees=&labels=%F0%9F%8E%89+enhancement&template=---feature-request.md&title=)

[rust logo]: https://raw.githubusercontent.com/wasmerio/wasmer/master/assets/languages/rust.svg
[rust integration]: https://github.com/wasmerio/wasmer/tree/master/lib/api
Expand Down Expand Up @@ -277,25 +205,18 @@ languages**, so you can use WebAssembly _anywhere_.
[zig logo]: https://raw.githubusercontent.com/ziglang/logo/master/zig-favicon.png
[zig integration]: https://github.com/zigwasm/wasmer-zig

## 🤲 Contribute
We welcome any form of contribution, especially from new members of
our community 💜. You can check [how to build the Wasmer runtime
documentation from
sources](https://docs.wasmer.io/ecosystem/wasmer/building-from-source)!
### Testing
## Contribute

Test you want? The [Wasmer docs will show you
how](https://docs.wasmer.io/ecosystem/wasmer/building-from-source/testing).
We appreciate your help! 💜

## 👐 Community
Check our docs on how to [build Wasmer from
source](https://docs.wasmer.io/ecosystem/wasmer/building-from-source) or [test your changes](https://docs.wasmer.io/ecosystem/wasmer/building-from-source/testing).

Wasmer has an amazing community of developers and contributors. You are very welcome! 👋
## Community

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

- [Community Slack workspace](https://slack.wasmer.io/),
- [Official Twitter account](https://twitter.com/wasmerio),
- [Official Facebook acount](https://www.facebook.com/wasmerio),
- [Email](mailto:[email protected]).
- [Wasmer Community Slack](https://slack.wasmer.io/)
- [Wasmer on Twitter](https://twitter.com/wasmerio)
- [Wasmer on Facebook](https://www.facebook.com/wasmerio)
- [Email](mailto:[email protected])

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