The Currency Cloud, cross border payment as a service provider, has enabled developers to integrate international payment processing with an API: XBPConnect. Prior to the Currency Cloud, payment/invoice software required users to leave the platform and engage a third party to process an international invoice. The Currency Cloud allows cross border and multi-currency transactions from a single platform. The API allows developers to integrate the functionality into existing apps and platforms.
Take Twitter, add its concepts as a platform to banking and you get BankSimple, the unlaunched startup that you will definitely want to keep your eye on. BankSimple is a new take on online banking created by Twitter's former API guy, Alex Payne. BankSimple is aiming to create a banking platform, much as Twitter became a messaging platform.