# Wasmtime

> Apache-2.0 Bytecode Alliance WebAssembly runtime

**Category:** Rust  
**Pricing:** open-source  
**URL:** https://wasmtime.dev/  
**GitHub:** https://github.com/bytecodealliance/wasmtime  
**Added:** 2026-09-16

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## The Hook

Wasmtime is the Bytecode Alliance runtime for WASI/Wasm components — embed sandboxed Wasm where containers are too heavy.

## 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.