The Playtomic iOS SDK by Playtomic interacts with the API to access video game features that developers can integrate into Apple mobile devices. Activity stream, laderboards, and level sharing are some of the resources available on the site.
No one needs an introduction to YouTube, which is by far the largest social video site. The YouTube API was first released in 2005, which seems like a long time back in the API timeline. At the recently concluded Google I/O 2012, YouTube officially announced a series of new APIs and enhancements that focused on mobile video, user engagement and Analytics.
Agora.io has launched an Agora Interactive Broadcasting API developers can use to add real-time interactive broadcasting capabilities to web and mobile applications. Agora Interactive Broadcasting supports up to 7 active speakers and 10,000 participants, and is available via the Agora SDK.