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

Expresso is described as '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' and is a regular expression editor in the development category. There are more than 25 alternatives to Expresso for a variety of platforms, including Web-based, Windows, Mac, Linux and Self-Hosted apps. The best Expresso alternative is regular expressions 101, which is free. Other great apps like Expresso are RegExr, RegexBuddy, RegexMate and Wildcard.
Regex101 is a powerful, online regular expression tool with extensive support for multiple languages including PHP, PCRE, Python and JavaScript.

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



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



RegViz is a 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.

Regular expression tester with syntax highlighting, explanation, cheat sheet for PHP/PCRE, Python, Go, JavaScript, Java.

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:



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.

