The Instagram API implementation in PHP enables developers to access the Instagram API's methods from their PHP code. This library comes with example files and sample code to help developers get started.
Wasn't really expecting this - Microsoft recently released an event driven API for mobile devices, it's only available on Android, you can only sign up with your Facebook account and the scripting language is Javascript.
SumUp, a mobile payments rising star, recently announced an API that allows third party apps to accept credit card and cash payments without leaving the app. Prior to the API, SumUp users and customers were required to use the SumUp app in isolation from the merchant app to utilize the slick mobile payments platform.
