The Regulator, my Regex testing tool, has been named by Regexlib.com as their “recommended tool for testing regular expressions” and has been put up there in the front page. They also put up a resource page for many other regex testing tools, books, articles and links. I'm totally flattered.
Regexlib.com is a website dedicated to collecting and sharing regular expressions to parse almost anything. Anyone can register and post their own regular expressions that they've found interesting and helpful. You can too.
The Regulator has tight integration with Regexlib.com's web service, which allows the user to search for regular expressions in regexlib.com's database from within the tool, and with a click import them and test them inside the program.
It also features a “publish“ wizard which lets you post regular expressions onto regexlib.com directly from within The Regulator.Did I mention it's totally free?