A lightweight WebAssembly runtime built for embedded systems, IoT devices, and constrained environments.
The WebAssembly Micro Runtime (WAMR) is a Bytecode Alliance project designed for resource-constrained environments where a full-featured runtime like Wasmtime would be impractical. It provides a tiny footprint (as low as 100 KB ROM), multiple execution modes (interpreter, AoT, JIT), and WASI support. WAMR is widely deployed in IoT gateways, automotive systems, and smart device firmware where deterministic execution and minimal overhead are critical requirements.
Mozilla's standalone WebAssembly engine built on SpiderMonkey — a fast JS-in-Wasm runtime used in production at Fastly and Fermyon.
A fast, secure WebAssembly runtime built by the Bytecode Alliance with full WASI 0.2 and Component Model support.
A cross-platform WebAssembly runtime with WASIX, WASI 0.2 default, jco support, and a public package registry.