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RegExr: Free Online RegEx Testing Tool

Grant Skinner have released a Utility Tool — RegExr, built with Flex 3, and uses ActionScript 3’s built in RegExp engine.

RegExr is an online tool for editing and testing Regular Expressions (RegExp / RegEx). It provides a simple interface to enter RegEx expressions, and visualize matches in real-time editable source text. It also provides a handy RegExp snippet sidebar with descriptions and usage examples to make it easier to learn Regular Expressions through trial and error.

So far this has only taken a day of development, and the main app is only 150 lines of code. Flex 3 makes this kind of app so darn simple to put together.

RegExr is available online and is free. Grant have promised to release a Free Desktop version built with AIR in a day or two. So, the desktop version can be used on Mac, Windows and Linux (in the near future). The online version requires Flash Player 9.

Visit RegExr or read Grant Skinner’s article.