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Wasmtime is a Bytecode Alliance project that is a standalone wasm-only optimizing runtime for WebAssembly and WASI. 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. Installation The Wasmtime CLI can be installed on Linux and macOS with a small install script: $ curl https://wasmtime.dev/install.sh -sSf | bash Windows or otherwise interested users can download installers and binaries directly from the GitHub Releases page. Example If you've got the Rust compiler installed then you can take some Rust source code: fn main() { println!("Hello, world!"); } and compile/run it with: $ rustup target add wasm32-wasi $ rustc hello.rs --target wasm32-wasi $ wasmtime hello.wasm Hello, world! Features Lightweight. Wasmtime is a standalone runtime for WebAssembly that scales with your needs. It fits on tiny chips as well as makes use of huge servers. Wasmtime can be embedded into almost any application too. Fast. Wasmtime is built on the optimizing Cranelift code generator to quickly generate high-quality machine code at runtime. Configurable. Whether you need to precompile your wasm ahead of time, generate code blazingly fast with Lightbeam, or interpret it at runtime, Wasmtime has you covered for all your wasm-executing needs. WASI. Wasmtime supports a rich set of APIs for interacting with the host environment through the WASI standard. Standards Compliant. Wasmtime passes the official WebAssembly test suite, implements the official C API of wasm, and implements future proposals to WebAssembly as well. Wasmtime developers are intimately engaged with the WebAssembly standards process all along the way too. Language Support You can use Wasmtime from a variety of different languages through embeddings of the implementation: Rust - the wasmtime crate C - the wasm.h, wasi.h, and wasmtime.h headers Python - the wasmtime PyPI package .NET - the Wasmtime NuGet package Go - the wasmtime-go repository Documentation 📚 Read the Wasmtime guide here! 📚 Download: wasmtime-main.zip or git clone https://github.com/cfallin/wasmtime.git Source