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To download Regex — Regular Expression Tester from the Mac App Store, you need a Mac with OS X 10.6.6 or later. Learn More.

Regex — Regular Expression Tester

By MotionObj

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Powerful regular expression editor that dynamically highlight matches.

* Automatic generation of regular expression from sample data
* Immediate feedback. Dynamic highlighting of matches as you modify the regular expression or sample text
* Automatic escaping of special characters when copying a regular expression
* Automatic unescaping of special characters when pasting a regular expression
* Supports capture groups
* Supports matching options such as case-insensitive matches
* Supports positive lookahead, negative lookahead
* Supports positive lookbehind, negative lookbehind
* Supports backreferences
* Fast and Dead-simple to use
* Supports State restoration - restart the app to continue where you left off




See the regular expressions tutorial at


Please refrain from sending your bug reports or feature requests using the App Store since we have no way to reply to you. Instead, to ensure a direct response from us, choose the "Email Developer" in the Help menu.

Otherwise, feedback (or praise!) on the app store in the form of ratings/reviews is greatly appreciated.

What's New in Version 2.2.5

* Fix: crash on launch with El Capitan
* Bug fixes


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Customer Reviews

Fast, simple and to the point

This app is awesome and easy to use. It not only does the job well, but helps me learn about regular expressions.

Colors are dull, but otherwise a 5 star app

The app wrks fine and I can generate a regexp quickly. Would give 1 more star if the app is prettier.

Regex — Regular Expression Tester
View in Mac App Store
  • $13.99
  • Category: Developer Tools
  • Updated:
  • Version: 2.2.5
  • Size: 1.7 MB
  • Language: English
  • Seller:

Compatibility: OS X 10.9 or later, 64-bit processor

Customer Ratings

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