You might need to port any UI parts of the framework such as login dialogs, but the underlying networking code of an iOS framework should work on Mac OS X.
(Whoo hoo! I've just gone 8-bit. I'm 6502 now! PowerPC, here I come.)
You might need to port any UI parts of the framework such as login dialogs, but the underlying networking code of an iOS framework should work on Mac OS X.