Regex GitHub Repositories (2026) · Open Source Tools

ripgrep recursively searches directories for a regex pattern while respecting your gitignore

A simple, fast and user-friendly alternative to 'find'

A compiled-away, type-safe, readable RegExp alternative

A full-featured regex engine in pure Go based on the .NET engine

A sane interface for php's built in preg_* functions

Rust library for regular expressions using "fancy" features like look-around and backreferences. Has a mode which aims to be compatible with Oniguruma syntax.

Bindings for RE2: fast, safe alternative to backtracking regular expression engines.

A tiny, fast, simple syntax highlighter for the web and the terminal in JavaScript

pyregex is a Python Regular Expression Online Tester

RE2JS is the JavaScript port of RE2, a regular expression engine that provides linear time matching

Swift Regex is an online tool to learn, build and test Swift Regex Regex and Regex Builder.

Ruby bindings to RE2, a "fast, safe, thread-friendly alternative to backtracking regular expression engines like those used in PCRE, Perl, and Python".

Free editor for huge text and log files: opens 50 GB at once, searches at 2.5 GB/s, never freezes. A free alternative to EmEditor and UltraEdit for Windows, Linux and macOS. Written in Rust.

Headless chatbot that detects spam and posts links to it in chatrooms for quick deletion.

SAKURA Editor (Japanese text editor for MS Windows)