This has been around for quite a while now and is definitely one of the most popular networking framework for Cocoa. Before that it was ASI which was delegate b

This has been around for quite a while now and is definitely one of the most popular networking framework for Cocoa. Before that it was ASI which was delegate based (AF is block based). Compare to ASI, AF is a lot more modern (also being actively maintained is a nice plus). Definitely my network framework of choice if I have to start an iOS project myself.