A UITableView subclass that automatically collapse and/or expand your sections. You just have to fill your datasource like for a classic UITableView and the magic will happen.
STDebugKit Allow you to debug your app, even from a device ! From every screen you'll have access to a little debug button that could open a debug center. In that center you'll find global tools and context sensitive tools.
SpriteKit helpers and additions. Add a parallax node. Add control methods, convenient methods on SKEmitterNode to unarchive resources, and on SKNode to run actions, and utils functions.
STSwizzle add several methods on NSObject. Some methods allows to swizzle methods on a class, others to swizzle methods for a particular instance.
STWorkflow allows to write finite-state machine in Objective-C. It handles simple conditions (two exits) and multiple conditions (n exits). It allows to execute actions, and dispatch states which allows to execute several states in parallel and synchronize the end of those states. Each state (conditions or actions) can be synchronous or asynchronous.