Wasmtime is a standalone runtime for WebAssembly (Wasm), developed by the Bytecode Alliance, designed to execute WebAssembly modules efficiently and securely outside of web browsers.
It supports various use cases, from embedding in applications to running standalone via its command-line interface (CLI).
Wasmtime can be installed on Linux and macOS using a simple script or downloaded directly for Windows from its GitHub releases page.
Developers can compile WebAssembly modules using tools like Rust’s rustc
compiler and execute them with Wasmtime CLI.
bash$ rustup target add wasm32-wasip1
$ rustc hello.rs --target wasm32-wasip1
$ wasmtime hello.wasm
Hello, world!
Wasmtime is ideal for embedding WebAssembly in applications to extend functionality or isolate untrusted code securely.
It also serves as a foundation for other tools in the Bytecode Alliance ecosystem, such as Cranelift, which powers its code generation capabilities.
In summary, Wasmtime is a robust solution for executing WebAssembly modules efficiently while ensuring security and compliance with modern standards. Its versatility makes it a key player in advancing WebAssembly beyond the browser.
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