Asi-path-finder is a project mainly written in Objective-C, based on the View license.
Co-operative path finder (for games) written in Objective-C
ASIPathFinder is a complete implementation of a cooperative path finding algorithm, and will probably be most useful for writing Real Time Strategy games. It is written in Objective-C, and is compatible with Mac OS and iPhone OS.
An overview explanation of ASIPathFinder is available at: http://allseeing-i.com/ASIPathFinder.