I think there is one in misckit. [link|http://www.misckit.com|http://www.misckit.com] is an enormous pile of free ObjectiveC. I think there are methods on MiscString. I'd split em off into a category on NSString.

Another one is the OmniGroup libs - [link|http://www.omnigroup.com/developer/sourcecode/|http://www.omnigroup...loper/sourcecode/]

There is stuff in OmniFoundation. The thing about Omni code is it all builds on itself so you can end up with a lot of extra stuff if you just want one thing.

Or write your own category on NSString to interface to your fave regex lib in C.