Regular Expression Editors

RegExr.com is an online tool to learn, build, and test Regular Expressions. It was created by Grant Skinner and the nice people at gskinner.com.

Regex101 is a powerful, online regular expression tool with extensive support for multiple languages including PHP, PCRE, Python and JavaScript.

Regex Forge is a regular expression editor for macOS with pattern visualization, syntax highlighting, live replace & preview and more.

The award-winning Expresso editor is equally suitable as a teaching tool for the beginning user of regular expressions or as a full-featured development environment for the experienced programmer or web designer with an extensive knowledge of regular expressions.

Craft and test regex effortlessly on macOS and iOS with RegexMate. A minimalist UI, live preview, and a comprehensive reference guide enhance usability.

RegexBuddy is your perfect companion for working with regular expressions. Learning, creating, understanding, testing, using and saving regular expressions has never been easier.

Expressions is a minimal, distraction-free tool for experimenting with regular expressions.

The only one Regular Expression tester you need, that will help you to test your regular expressions in flavors:

Patterns is a simple yet powerful tool for working with regular expressions. Build great patterns quickly and effortlessly with syntax coloring and with matching and replacing occurring in real time.

Use RegexMagic to generate complete regular expressions to your specifications by using RegexMagics flexible patterns, instead of the cryptic regex syntax.

RegEx Lab allows you to test regular expressions. The app highlights and underlines text to show matches and capture groups. There's also a handy cheatsheet and a results list view. It has a replace feature too.

Visual regex builder for Mac that tests your pattern against 21 real language engines, with AI-assisted generation and offline-only processing.

Regex 2.4.2 is a focused regular expression editor and tester for macOS 14.2 or later. It uses the Swift Regex engine and shows explicit empty, invalid, zero-match, and matching states while highlighting matches and counts live.