Jazz Hands is a keyframe animation framework by IFTTT. Move UIViews around the screen based on UIScrollView input, KVO, or anything really.
A VoiceOver speech synthesizer and other iOS accessibility helpers.
Flexible data sources for your UITableView and UICollectionView.
UILabel/UIButton/UITextField/UITextView subclasses that support custom fonts with iOS 7's dynamic text sizes.
Quickly present available web browsers, save prefs, and perform common actions.