# Introduction [Wasmtime][github] is a standalone optimizing runtime for [WebAssembly], [the Component Model], and [WASI] by the [Bytecode Alliance][BA]. It runs WebAssembly code [outside of the Web], and can be used both as a command-line utility or as a library embedded in a larger application. Wasmtime strives to be a highly configurable and embeddable runtime to run on any scale of application. This documentation is intended to serve a number of purposes and within you'll find: * [How to use Wasmtime from a number of languages](lang.md) * [How to install and use the `wasmtime` CLI](cli.md) * Information about [stability](stability.md) and [security](security.md) in Wasmtime. * Documentation about [contributing](contributing.md) to Wasmtime. ... and more! The source for this guide [lives on GitHub](https://github.com/bytecodealliance/wasmtime/tree/main/docs) and contributions are welcome! [github]: https://github.com/bytecodealliance/wasmtime [BA]: https://bytecodealliance.org/ [WebAssembly]: https://webassembly.org/ [WASI]: https://wasi.dev [outside of the Web]: https://webassembly.org/docs/non-web/ [issue]: https://github.com/bytecodealliance/wasmtime/issues/new [the Component Model]: https://github.com/WebAssembly/component-model