GC3DFlipTransitionStyleSegue

iBooks-style 3D flip transition animation rendered in OpenGL ES 2.0 and wrapped in a UIStoryboardSegue subclass

GCNetworkReachability

GCNetworkReachability monitors the network state on iOS and OS X devices. Supports ARC, GCD, Blocks, IPv4/IPv6 and OS X/iOS.

GCReusableQueue

Class to store objects in a reusable queue to minimize memory allocations for better efficiency.

GCNetworkRequest

An easy-to-use asynchronous HTTP networking library for iOS and OS X