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

Pythex is described as 'Real-time regular expression editor for Python, a quick way to test your regular expressions' and is an website in the development category. There are seven alternatives to Pythex, not only websites but also apps for a variety of platforms, including Windows, Linux, Mac and Android apps. The best Pythex alternative is regular expressions 101, which is free. Other great sites and apps similar to Pythex are CyrilEx, Regex.ai, Pyrexp and DevUtilHub.
Regex101 is a powerful, online regular expression tool with extensive support for multiple languages including PHP, PCRE, Python and JavaScript.

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.


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.

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.
