The Instagram API PHP Class provides developers with easy access to the Instagram API's methods in PHP. This version of the library lacks a few important methods, but it can still perform user authorizations and help users access their basic information.
Recently, blogging service Posterous thought it would try and help ease the burden of moving from other places on the web to its blogging platform by developing a bunch of migration tools. All of these tools were built on other services' open APIs and designed to go in, grab your content, and republish it through Posterous maintaining as much metadata as possible. Things were fine until photo-hosting service Twitpic caught wind and cut of Posterous' API access.
Apple's iOS Camera APIs make the iPhone a manual camera—for third party developers. Fleksy to be early out of the gate on iOS 8, but could use more APIs. Plus: Australian startup says it owns the "HealthKit" name, and Contract Logix a API integration.