Expresso

The award-winning Expresso editor is equally suitable as a teaching tool for the beginning user of regular expressions or as a full-featured development environment for the experienced programmer or web designer with an extensive...

Free Windows

The Regex Coach

The Regex Coach is a graphical application for Windows which can be used to experiment with (Perl-compatible) regular expressions interactively. It has the following...

Free Personal Windows

RegexPal

An online JavaScript regular expression tester. Enter a regex expression and test data and determine if matches are made.

Free Web

rubular

A ruby based regular expression editor

Free Web

Debuggex

debuggex is an intuitive visual regular expression debugger, tester, and helper. note: login/registration relies on persona which is now shut down.

Freemium Web

Regulex

Regulex is an open-source, regular expression parser and visualizer. It's available online, can be embedded in other websites, or the code can be self-hosted as a...

Free Open Source Web Self-Hosted

RegExhibit

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?...

Free Open Source Mac OS X

RegViz

RegViz is a tool for debugging JavaScript regular expressions in a visual way. Advanced highlighting helps you to understand the structure and purpose of a regular...

Free Web