Facebook SDK for iOS
This open-source library allows you to integrate Facebook into your iOS app, and supports devices including iPhone, iPad and iPod touch.
Except as otherwise noted, the Facebook SDK for iOS is licensed under the Apache License, Version 2.0 (http://www.apache.org/licenses/LICENSE-2.0.html).
Learn more about about the provided samples, documentation, integrating the SDK into your app, accessing source code, and more at http://developers.facebook.com/ios.
NOTE: By default, the Facebook SDK for iOS is installed in ~/Documents/FacebookSDK. A simple way to test your install is to build and run the project at ~/Documents/FacebookSDK/Samples/JustRequestSample/JustRequestSample.xcodeproj.