* [JavaScript Engine Switcher v3.33.1](https://github.com/Taritsyn/JavaScriptEngineSwitcher) – Library providing a unified interface for accessing features of various popular JavaScript engines.

* [Peast v1.17.5](https://github.com/mck89/peast) – PHP 5.4+ library that parses JavaScript code to generate an abstract syntax tree following the ESTree standard.

* [JavaScript engines zoo 20260316](https://github.com/ivankra/javascript-zoo) – Catalog and build system for JavaScript engines, parsers, benchmarks, and conformance testing.