A utility that reminds your iPhone app's users to review the app.

tap + haiku = tapku, a well crafted open source iOS framework

Core Data code generation

Source for many of The Omni Group's frameworks

A fast, simple graph drawing and data plotting app for OS X and iPad.

A Static Library to be embedded on iOS applications to display pdf documents derived from Fast PDF

Use a Bluetooth 4 enabled Mac running Mavericks (not Yosemite) as an iBeacon

WebKit plug-in to prevent automatic loading of Adobe Flash content

KTPhotoBrowser is a lightweight photo browser library for the iPhone and iPod touch that looks and behaves like the iPhone Photos app.

Cocoa syntax highlighting text view

Syncing framework for Cocoa Touch

A wrapper for the iPhone's C-based AddressBook framework.

Various bits of code that are constantly reused by MSZ and are under a BSD license

A collection of UI goodies for iPhone.

OTPageScrollView

Useful Objective-C stuff

A project that includes a module for drawing arbitrary .ttf fonts for iPhone.

Implementation of the iCloud demo app shown at WWDC 2011 (but not released)

JSON command-line parsing and checking for Mac OS X

Rackspace Cloud Files SDK for iOS