A handy class that prompts users of your iPhone or Mac App Store app to rate your application after using it for a while. Similar to Appirater, but with a simpler, cleaner interface and automatic support for iOS fast application switching.
Facebook SDK for iOS
Small library of visual debugging tools for iOS.
A category for UIAlertView which allows you to use blocks to handle the pressed button events rather than implementing a delegate.
KVOBlockNotificationCenter is a set of source code for using blocks with Cocoa's Key Value Observing (KVO). Originally inspired by Mike Ash's "KVO Done Right" blog post and code: http://www.mikeash.com/?page=pyblog/key-value-observing-done-right.html See http://toxicsoftware.com/kvoblocks/ for more information.
A drop-in replacement for UILabel that supports NSAttributedStrings