wasm3 ☆

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Description:
High performance WebAssembly interpreter

Type: Formula | Tracked Since: Dec 28, 2025

Links: Homepage | formulae.brew.sh

Category: Developer tools

Tags: webassembly wasm interpreter embedded iot runtime

Install: brew install wasm3

About:
Wasm3 is a lightweight, high-performance WebAssembly interpreter designed for embedded systems and resource-constrained environments. It provides a fast and portable runtime for executing Wasm modules without the overhead of a JIT compiler. Its small footprint and C-based implementation make it ideal for integrating WebAssembly into IoT devices, mobile apps, and other native applications.

Key Features:

High performance interpreter
Extremely low memory footprint
Portable C99 codebase
Supports multiple platforms (including bare metal)
No external dependencies

Use Cases:

Running WebAssembly on microcontrollers and IoT devices
Embedding a Wasm runtime in native applications
Serverless function execution with low overhead
Plugin systems for performance-critical applications

Alternatives:

wasmer – Wasmer is a more feature-rich runtime with JIT/AOT compilation, but has a larger footprint.
wasmtime – Wasmtime is a mature runtime focused on standards compliance and security, primarily for server-side use.
node.js – Node.js can run Wasm via V8, but is a full JavaScript runtime, not a dedicated lightweight interpreter.

Version History

Detected	Version	Rev	Change	Commit
Sep 13, 2025 12:04pm		0	VERSION_BUMP	f14858a5