Cost / License
- Free
- Proprietary
Platforms
- Online

RegViz is described as 'Tool for debugging JavaScript regular expressions in a visual way. Advanced highlighting helps you to understand the structure and purpose of a regular expression and to detect bugs therein' and is an website in the development category. There are more than 25 alternatives to RegViz, not only websites but also apps for a variety of platforms, including Windows, Mac, Linux and Self-Hosted apps. The best RegViz alternative is regular expressions 101, which is free. Other great sites and apps similar to RegViz are RegExr, Expresso, RegexMate and Wildcard.

A VS Code extension for visualizing data structures while debugging. Works best with JavaScript/TypeScript. Also tested with C#, Java and PHP. Works with any language that you can debug in VS Code.

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




jRegExAnalyser is an interactive tool written in Java to write, test, debug, analyse and profile regular expressions. Its free and Open Source software, licensed under the terms of GPLv2 with Class Path Exception.

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

This software will let you design your regexps by letting you type the expression and visualize its effect on a sample of your choice.




Reggy is a small OS X cocoa/objective-c application to very quickly visualize what a given regular expression will match given a test string. It will also tell you if you have errors in your regular expression.


A free environment for regular expression testing (ferret). It allows you to write regexes and test them against a sample text, providing extensive output about the results.

Multi String Replacer is a small and portable application that can be used to replace multiple strings at once. Its main functionality is String Swapping in which can be easily and quickly done. String swapping consists on replacing WordX with WordY and WordY with WordX.


Search multiple strings occurrences simultaneously with the help of this piece of software that comes with support for regular expressions.


Having trouble getting your regular expressions just right? Not sure what they match and what they leave out? Tired of having to write test programs every time? RegExhibit can help.

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.

