Wasmtime
Apache-2.0 Bytecode Alliance WebAssembly runtime
Rust / Systems · Apache-2.0 · 18.7k
Reviewed 2026-09-16 · last push 2026-10-16 · repo checked 2026-10-19
What's Good
Apache-2.0 (bytecodealliance/wasmtime). Cranelift-backed runtime with CLI and embedding APIs (Rust/C and friends), WASI and component-model work. Site at wasmtime.dev; ~19k★. Standard pick when you want standards-track Wasm outside the browser.
The Catch
Vs WasmEdge / Wasmer (alternate Wasm runtimes) and vs containers: Wasmtime is a Wasm runtime, not a Docker replacement for every workload. WASI/component maturity and host ABI choices still shape what you can port; not a general app platform by itself.
Verdict
Apache-2.0 Wasm runtime. Standards-track sandbox vs WasmEdge/Wasmer; not a container stand-in.
Embed
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Markdown
[](https://stackgems.com/gems/wasmtime)
HTML
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