The Core Bluetooth framework provides the classes needed for your iOS and Mac apps to communicate with devices that are equipped with Bluetooth low energy wireless technology.

The Core Location framework lets you determine the current location or heading associated with a device. The framework uses the available hardware to determine the user’s position and heading. You use the classes and protocols in this framework to configure and schedule the delivery of location and heading events. You can also use it to define geographic regions and monitor when the user crosses the boundaries of those regions. In iOS, you can also define a region around a Bluetooth beacon.

Client SDK for MoPub.

UAAppReviewManager is a simple and lightweight App review prompting tool for iOS and Mac App Store apps.

Bolts is a collection of low-level libraries designed to make developing mobile apps easier.

Highly customizable drop-in solution for introduction views.

The iOS SDK provides Facebook Platform support for iOS apps.

iPhoneMK is a loose collection of Objective-C classes for the iPhone SDK.

UITextfield subclass with autocomplete menu.

Asynchronous image downloader with cache support with an UIImageView category.

AFNetworking is a networking library for iOS and Mac OS X. It's built on top of the Foundation URL Loading System, extending the powerful high-level networking abstractions built into Cocoa. It has a modular architecture with well-designed, feature-rich APIs that are a joy to use.

BugSense for iOS.