InstagramKit is an Objective C wrapper for the API. It aims to interact with Instagram's model objects using blocks-based architecture and asynchronous JSON response. Cocoapods is required to install. If this is the first time developers create an app, they need to register in Instagram's client site. A demo project exists to discover how the engine can be used. InstagramKit is not supported by Instagram or Facebook. For more info, contact Shyam Bhat @bhatthead
As Facebook is one of the major players and MessageMe is a new kid on the block, you would expect that the latter would be intimidated, if not crushed, by any direct attack from the social giant. In this case, it doesn't seem to be so. Despite Facebook recently cutting off MessageMe's access to the Facebook Friend Graph, the newcomer has since grown in popularity and managed to raise $1.9 million.
Less than a day removed from a security breach that led to several high profile Twitter accounts being hacked, Twitter is delaying the launch of an all-new API. The new Twitter API is intended to provide developers with a robust feature set and an easy path to advanced data access.