NachoMan

MagicalRecord

Super Awesome Easy Fetching for Core Data!

JSONKit

Objective-C JSON

PullToRefresh

A simple iPhone TableViewController for adding pull-to-refresh functionality.

connect-redis

Redis session store for Connect

MGImageUtilities

Useful UIImage categories for iPhone/iPad developers.

three20

Three20 is an Objective-C library for iPhone developers

MWFeedParser

An Objective-C RSS / Atom Feed Parser for iOS

leaves

A page-turning interface for iOS apps

zimt

Collection of useful Cocoa(Touch) classes, including objc implementation of the websocket protocol

CatalystX-FacebookURI

CatalystX::FacebookURI

MGTwitterEngine

Objective-C Twitter integration library for Mac OS X and iPhone. Official repository.

grasshopper

Grasshopper is a feature-rich and flexible MVC framework for web applications and services built on node.js.

BPManagedObjectInspectorViewController

A basic inspector view controller for Core Data managed objects

EPGLTransitionView

OpenGL ES view for animating a view transition.

BPStaticListSelectionViewController

Allows selection from a static list of items in Cocoa Touch

BPCoreDataDrivenTableViewController

A core data driven table view controller (for displaying a list of items from an NSFetchedResultsController)

BPEditableTableViewCell

Some editable UITableViewCell subclasses for Cocoa Touch applications

BPColorPicker

A simple color picker for the iPhone

restkit

an HTTP resource kit for Python

simstorekit

A simulated version of the iPhone's StoreKit, for testing store UIs on the iPhone Simulator, or even on device without having to set up IAP in Connect.

ABTableViewCell

Pocket-OCR

Demonstration of Tesseract OCR on the iPhone. Video: http://www.youtube.com/v/MICew5-nZp4?hl=en_US&fs=1

EGOUICache

Quickly cache drawRect methods to images, to avoid unnecessarily repeating intensive drawings every time.

EGOViewStackPersistence

mootools-more

MooTools Plugins and Enhancements Repository

EGOHTTPRequest

Useful wrapper around NSURLConnection that adds many essential methods

PhotoViewer

Quick PhotoViewer for the iPhone. Built upon our other reliable libraries: EGOImageLoading and EGOCache.

EGOGradientView

CAGradientLayer backed UIView, with pass-through properties

EGOImageLoading

What if images on the iPhone were as easy as HTML?

EGOTableViewPullRefresh

A similar control to the pull down to refresh control created by atebits in Tweetie 2.