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.
Cost / License
- Free
- Open Source
Platforms
- Linux

Regex Hero is described as 'NET regular expression tester with instantaneous highlighting, code completion, and C# and VB.NET code generation' and is an app. There are more than 25 alternatives to Regex Hero for a variety of platforms, including Web-based, Windows, Mac, Linux and Self-Hosted apps. The best Regex Hero alternative is regular expressions 101, which is free. Other great apps like Regex Hero are RegExr, Expresso, Wildcard and RegexMate.
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.



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

DevUtilHub provides 24+ free online developer tools including regex tester, Base64 encoder/decoder, JWT debugger, JSON formatter, hash generators, and more. All tools run entirely in your browser for maximum privacy and speed. No signup required.

Easily test your regular expressions against a sample body of text in a native UWP app designed for Windows 10. Just type your regex and it instantly begins matching as you type. Any capture groups are automatically highlighted, and the app works completely offline.

