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.

In iOS and OS X, the Photos framework (formerly known as Assets Library framework) provides classes that support building photo editing extensions for the Photos app. In iOS, the Photos framework also provides direct access to the photo and video assets managed by the Photos app, including the iCloud Photo Library. Use this framework to retrieve assets for display and playback, edit their image or video content, or work with collections of assets such as albums, moments, and iCloud Shared Albums.

The Audio Toolbox framework provides interfaces for recording, playback, and stream parsing. In iOS, the framework provides additional interfaces for managing audio sessions.

The AV Foundation framework provides an Objective-C interface for managing and playing audio-visual media in iOS and OS X applications.

Baidu Maps SDK for iOS

Founded in 2000, Baidu, a Chinese language search platform, leveraging the booming Chinese Internet and search engine market , has dominated Chinese online ad market in 2007, generating RMB1.74 billion revenue with at 108% growing rate year on year. Respond to hundreds of millions of queries daily, Baidu represent approximately 70% of total online search queries in China. Over 150,000 small and mid-sized Chinese enterprises, large domestic corporations and Chinese divisions or subsidiaries of large multinational corporations have benefited from Baidu's online search marketing services. Beyond online search, Baidu continues its success in query-based searchable communities with Baidu's Post Bar (BBS) and Baidu Knows (Answers) representing two of the biggest communities in the world.

BaiduPushSDK.

Core Foundation is a framework that provides fundamental software services useful to application services, application environments, and to applications themselves. Core Foundation also provides abstractions for common data types, facilitates internationalization with Unicode string storage, and offers a suite of utilities such as plug-in support, XML property lists, URL resource access, and preferences.