MBProgressHUD is an iOS drop-in class that displays a translucent HUD with a progress indicator and some optional labels while work is being done in a background thread. The HUD is meant as a replacement for the undocumented, private UIKit UIProgressHUD with some additional features.

Variations on activity views ("Loading...") for iPhone. There are three classes: DSActivityView, DSBezelActivityView, and DSKeyboardActivityView. They provide three styles of activity view, and could easily be extended to support more.

This project is for developers using the Amazon Advertising API to write applications targeted towards the iPhone and the iPad. It supports both REST and SOAP apis, the project also envisions support for on device object persistence using SQLLite.

A flexible, advanced split-view controller for iPad developers (replacement for UISplitViewController).

A C++ truetype font rendering library for OpenGL ES on iOS devices. It is a port of FTGL.

A page curl/page flip example for the iPad