I’m really in love with regular expression or regex for short and I find myself using them more and more in my day-to-day programming. When writing and testing them I have previously been using on-line tools (like this) but recently I bought RegexBuddy which I can really recommend. It loads fast, makes it easy to write, test, debug regular expressions and copy the regex to the target programming language automatically handling escaping strings for that particular programming language. Nice!
Best 30 Euros I have spent in a while.

Thanks for that tip Mikkel – I think I will takes a look.
Woa, I can see why you went out and bought one based on that online example. Here’s a better online regex utility:
http://www.rexv.org/
Not as nice as the purchased one but hey its free and available from any machine you happen to be working on.