Sites and apps similar to regular expressions 101 include RegExr, which is free and open source. Other options are Expresso, RegexMate, Wildcard and RegexBuddy. There's no shortage of Regular Expression Editors like regular expressions 101, with more than 25 alternatives for Windows, Mac, Linux, self-hosting and iPhone.
Visual regex builder for Mac featuring drag-and-drop blocks, AI that generates patterns from English, explanations for each regex part, 21 real regex engines, instant engine switching, real-time match testing, sample library, VS Code integration, export, and offline AI support.
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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.
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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.
Pythex is a real-time regular expression editor for Python, a quick way to test your regular expressions.
Regular expression tester with syntax highlighting, explanation, cheat sheet for PHP/PCRE, Python, Go, JavaScript, Java.
