Programmers Regex Tool
 

I came across this web based regex testing tool I had never seen before, so if you know about it that's great but some of you may find it useful.

RegExr: Learn, Build, & Test RegEx

enjoy.

Personally I really like Expresso Expresso Regular Expression Tool The interface is quite clean - lets you test out search and replace functionality, has good help, plus it generates the C# expressions for you if you like.

i use

Rubular: a Ruby regular expression editor and tester

and

Online regex tester and debugger: JavaScript, Python, PHP, and PCRE

Thanks Robert and Fris.

been there, done that, thanks

i like this txt2re: headache relief for programmers :: regular expression generator

you put in your text and select the chaging values /. and voila you have regex.

:thumbsup

I have used the one OP described, but this one seems to be way more useful thanks.

This is a great client side tool as well: Regex Buddy from the same people behind EditPad.