* [Recog v3.3.0](https://github.com/rapid7/recog) – Framework for identifying products, services, operating systems, and hardware through fingerprint matching.

* [re2 v2.28.0](https://github.com/mudge/re2) – Ruby bindings for a fast, safe, thread-friendly regular expression engine.

* [XRegExp v5.1.3](https://github.com/slevithan/xregexp) – Augmented JavaScript regular expressions with modern syntax and flags plus utility helpers for easier matching and parsing across browsers.

* [magic-regexp v0.11.2](https://github.com/unjs/magic-regexp) – Compiled-away, type-safe, readable RegExp alternative with natural-language syntax and zero-dependency runtime.

* [eslint-plugin-regexp v3.3.1](https://github.com/ota-meshi/eslint-plugin-regexp) – ESLint plugin providing 80 rules for detecting mistakes, enforcing style, and optimizing regular expressions.