RegexKit

RegexKit Publisher's Description:
RegexKit is an Objective-C framework for regular expressions:

* Support for Mac OS X Cocoa and GNUstep. Mac OS X 10.4 or later required.
* Mac OS X Universal Binary, including 64-bit support on Mac OS X 10.5.
* No sub-classing required. Seamlessly adds regular expression support to all NSArray, NSDictionary, NSSet, and NSString Foundation objects with a rich set of Objective-C category additions.
* Unicode enabled. Full Unicode support for NSString objects.
* Extensive, high quality documentation.
* Full source code with a BSD license.
* Uses the BSD licensed PCRE Perl Compatible Regular Expressions library for the regular expression engine.

Tuned for high performance, including such features as:

* Caches the compiled form of the regular expression for speed.
* Multithreading safe, including multiple reader, single writer multithreaded access to the compiled regular expression cache.
* Makes minimal use of heap storage (ie, malloc() and free()), instead allocating most temporary buffer needs dynamically from the stack.
* Uses >Core Foundation directly on Mac OS X for additional speed.

Includes support for Mac OS X 10.5 Leopard:

* 64 bit support. Pre-built for ppc, ppc64, i386, and x86_64.
* Garbage Collection enabled. Complete support for Leopards Garbage Collection feature.
* Integrated Xcode 3.0 documentation. Get real time API information via the Research Assistant.
* Collection of instruments for Instruments.app.
* RegexKit specific DTrace probe points.

What's new in this version:

* Upgraded to PCRE version 7.6, which includes an important security related bug fix.
* Preliminary support for internationalization, though English remains the only provided localization.
* Support for returning NSError objects for error conditions.
* Support for multiple regular expressions in a collection (i.e., NSArray) to be evaluated concurrently on multiple threads, one per CPU.