Cost / License
- Free
- Proprietary
Platforms
- Online

regular expressions 101 is described as 'Regex101 is a powerful, online regular expression tool with extensive support for multiple languages including PHP, PCRE, Python and JavaScript' and is an website in the development category. There are more than 25 alternatives to regular expressions 101, not only websites but also apps for a variety of platforms, including Windows, Mac, Linux and Self-Hosted apps. The best regular expressions 101 alternative is RegExr, which is both free and Open Source. Other great sites and apps similar to regular expressions 101 are Expresso, Wildcard, RegexMate and RegexBuddy.

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




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.




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.

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


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.


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.


Pyrexp is a regex testing tool that allows to validate regex patterns, test regular expressions against strings, and also includes a regex visualizer that provides graphical visualization of regex patterns.

Regexp testing tool allows to apply group of regexps to huge arrays of data (millions or so) in order to investigate search or search/replacement possibilities of regexp group.

