The Facebook PHP SDK by Neeraj Kumar functions as an extension of the official Facebook PHP SDK in order to ease development on particular tasks such as when a person likes a page. PHP 5.3+ is required.
Our API directory now includes 945 social APIs. The newest is the SmartBots API. The most popular, in terms of mashups, is the Twitter API. We list [num] Twitter mashups. Below you'll find some more stats from the directory, including the entire list of social APIs.
Facebook has released a Canvas API for Advertisers that can be used to create compelling canvas ads on Facebook. Advertisers can now create canvas components via API such as header, carousel, button, and text. Advertisers can add Canvas to any Facebook photo, video or carousel ad.