Regular expression testing using javascript
A long time ago I made a Javascript tool to test regular expression patterns with. I had plans to expand it's functionality but never got around to it. It's still a nice demo so check it out.
The demo should be pretty much self explanatory. If you don't know anything about regular expressions I would suggest you check out this regular expression tutorial.
Note - Only the Javascript regular expressions work in this demo. The other three I never got around to implement.