The MulleEOInterface framework is a binary replacement for the EOInterface framework that Apple delivered in their Objective-C version of WebObjects (4.5). It's the link between EOControl and AppKit. Also features MulleEOObserver.
OCMock is an Objective-C implementation of mock objects. It creates mock objects on the fly and uses the trampoline pattern so that you can define expectations and stubs using the same syntax that you use to call methods.
This article series explores ways how to make your Objective-C code run faster. The series covers exclusively Objective-C and Foundation specifica. Optimizing code in general is not part of the agenda.
iTunesFS allows you to mount the iTunes database and all your local iPods as a file
system, using the excellent MacFUSE.
Albums, Artists and all Playlists are exposed as directories, with their respective entries, allowing for painless backups.