admuncher is a great piece of software, I can't recommend enough.

I bought regex buddy http://www.regexbuddy.com/ but whatever problem I have with regex (perl specifically) I can also extend to figuring out how to get regex buddy to produce useful results. I always end up surfing for (and finding) the answer in groups/forums.
Now, if I spent more time (any time) actually organizing what I do write into code snippets then I really would save myself a lot of bother. I will have to try the 2 free ones listed, maybe one is as obscure as my thought processes.