Best RegExr Alternatives & Competitors in 2025

Extensive regex tester and debugger with highlighting for PHP, PCRE, Python and JavaScript.

A ruby based regular expression editor

The fastest AI note-taker to capture your scattered thoughts and turn them into organized notes.

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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 with an extensive knowledge of regular expressions.

Welcome to the fantastic world of nerdy regex fun!

regex cheatsheet for the haters

Open Source

RegEx Generator is a simple-to-use application that comes with the brilliance of intuitive regex and is also helping you out to test the regex.

Open Source

RegexPlanet offers a free-to-use Regular Expression Test Page to help you check RegEx in Ruby free-of-cost.

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

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The Regex Coach is a graphical application for Windows which can be used to experiment with...

Build and debug modern web and cloud applications, by Microsoft

Open Source

Node.js is a platform built on Chrome's JavaScript runtime for easily building fast, scalable network applications

Regex Widget is a lightweight, easy-to-use regular expression tester released under the LGPL license.