Regex101 is a powerful, online regular expression tool with extensive support for multiple languages including PHP, PCRE, Python and JavaScript.
Cost / License
- Free
- Proprietary
Platforms
- Online

RegexBuddy is described as 'Is your perfect companion for working with regular expressions. Learning, creating, understanding, testing, using and saving regular expressions has never been easier' and is a regular expression editor in the development category. There are more than 25 alternatives to RegexBuddy for a variety of platforms, including Web-based, Windows, Mac, Linux and Self-Hosted apps. The best RegexBuddy alternative is regular expressions 101, which is free. Other great apps like RegexBuddy are RegExr, Expresso, Regex Forge and RegexMate.
Regex101 is a powerful, online regular expression tool with extensive support for multiple languages including PHP, PCRE, Python and JavaScript.

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.

Support only 2 engines while RegexBuddy 3.6 can simulate 15 flavors (Java, perl, python, ruby, tcl,...)
Much much less functionality.


Some users think RegExr is a great RegexBuddy alternative, some don't.
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.


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




RegexMate offers seamless regex crafting and testing on macOS and iOS. Its minimalist interface provides an instant live preview, and users can save their expressions into a library for quick reference. A comprehensive guide with tutorials is always accessible, with light and dark mode options.




The Regex Coach is a graphical application for Windows which can be used to experiment with (Perl-compatible) regular expressions interactively. It has the following features:





.NET regular expression tester with instantaneous highlighting, code completion, and C# and VB.NET code generation.



Regex Generator is a tool to generate simple regular expressions. The goal is that people with less experience can create regex smoothly.

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

Regex.ai is an AI-powered tool that generates regular expressions with ease and accuracy. It allows users to create regular expressions that match specific patterns with our easy-to-use interface and convenient UI/UX.


Only supports js and PHP flavour.