boa ☆

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Description:
Embeddable and experimental Javascript engine written in Rust

Type: Formula | Latest Version: 0.21@0 | Tracked Since: Dec 17, 2025

Links: Homepage | @boa_dev | formulae.brew.sh

Category: Developer tools

Tags: javascript rust engine embeddable ecmascript

Install: brew install boa

About:
Boa is an experimental Javascript engine implemented in Rust, designed to be embedded within other applications. It provides a lightweight, safe, and high-performance alternative to traditional C++ engines, focusing on ECMAScript specification compliance while offering modern memory safety guarantees.

Key Features:

Written in Rust for memory safety and performance
Embeddable architecture for integration into Rust projects
ECMAScript compliant with active spec implementation
Zero-cost abstractions leveraging Rust's ecosystem

Use Cases:

Embedding a JS runtime in Rust applications
Building custom scripting environments
Learning and experimenting with engine development

Alternatives:

QuickJS – C-based engine, more mature but lacks Rust's memory safety
V8 – Google's production engine, much larger and more complex

License: MIT OR Unlicense

Dependencies: openssl@3

Bottles available for: arm64_tahoe, arm64_sequoia, arm64_sonoma, sonoma, arm64_linux, x86_64_linux

Version History

Detected	Version	Rev	Change	Commit
Oct 22, 2025 3:42am		0	VERSION_BUMP	511c577b
Sep 12, 2025 6:40pm		0	VERSION_BUMP	a385874f