AFNetworking Extension for HTTP Request Logging

A CCLayer subclass that draws Chipmunk debug information such as shapes, constraints, collision points and bounding boxes. For use with Cocos2d 2.0 and OpenGL ES 2.0.

Easy access to view's frame.

simplifies the calling to app internet page for requesting a user review of the app on the app store

Simple block extension for UIAlertView

Additional functions and methods for working with Core Graphics and UIImages on iOS.

Adds method to check an app bundle's code signing and sandboxing state to NSBundle.

iphone版照片墙

pull to refresh controller

A simple and clean to implement login to twitter using Blocks

Adds OAuth signing to ASIHTTPRequest

Random Useful iOS Stuff

"Image Album" — or "Photo Album" if you like that better — View( Controller) for all crazy iOS developers out there... (by @pittleorg)

iPhone/iPad implementation of the Glk API

A category for UIAlertView which allows you to use blocks to handle the pressed button events rather than implementing a delegate.

Useful categories for iOS with ARC

Non-intrusive invitation to rate your iOS app

A basic 'Follow Me' Twitter Button for iOS which will use any installed Twitter App to show the user's profile.

A view that attaches itself to a UIScrollView and locks the scroll when visible.

A simple iPhone UITableViewController for adding "Pull-to-Refresh" functionality.

UINavigationController that can queue concurrent animation changes without breaking the interface

Lightweight notifications in iOS apps

Simple accordion view in Cocoa Touch

The marriage of ALAssetsLibrary and EGOPhotoViewController

Twitter-like cascade UI library

A set of fecund iTerm 2 color schemes

Some iOS guys may be tired of rounded rectangle loading HUD (like MBProgressHUD), steve said: Think Different.