spidermonkey
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Description:
JavaScript-C Engine
Type: Formula  |  Latest Version: 140.7.0@0  |  Tracked Since: Dec 10, 2025
Links: Homepage  |  @Mozilla  |  formulae.brew.sh
Category: Developer tools
Tags: javascript engine runtime mozilla webassembly
Install: brew install spidermonkey
About:
SpiderMonkey is Mozilla's JavaScript and WebAssembly engine, written in C++. It provides a high-performance runtime for executing JavaScript code, powering applications like the Firefox browser. Its main value proposition is offering a robust, standards-compliant engine for embedding scripting capabilities into C++ applications.
Key Features:
  • Just-In-Time (JIT) compilation for high performance
  • Support for modern JavaScript and WebAssembly standards
  • Embeddable API for integration into C++ applications
  • Incremental garbage collection
Use Cases:
  • Embedding a scripting language into C++ applications
  • Building browser engines or JavaScript runtimes
  • Developing high-performance applications requiring scripting
Alternatives:
  • V8 – Google's engine used in Chrome/Node.js; similar performance but different API and embedding model.
Version History
Detected Version Rev Change Commit
Jan 13, 2026 2:34pm 140.7.0 0 VERSION_BUMP 79be96ec
Dec 10, 2025 3:09pm 140.6.0 0 VERSION_BUMP 37f9bffe
Oct 14, 2025 6:26pm 140.4.0 0 VERSION_BUMP d84336fe
Sep 23, 2025 2:32pm 140.3.1 0 VERSION_BUMP 0c041eea
Sep 17, 2025 5:33pm 140.3.0 0 VERSION_BUMP 724a5420
Jan 7, 2025 6:50pm 128.6.0 0 VERSION_BUMP ead8a42c
Jan 7, 2025 5:16pm 128.6.0 0 VERSION_BUMP 294a498d
Dec 12, 2024 2:13pm 128.5.2 0 VERSION_BUMP 0959ce73
Nov 26, 2024 5:22pm 128.5.0 0 VERSION_BUMP 5f7a2b6e
Oct 31, 2024 3:09am 128.4.0 1 VERSION_BUMP 2199d297
Oct 9, 2024 2:06pm 128.3.1 0 VERSION_BUMP 9ee418e3