The Balanced iOS SDK by Ben Mills allows API communication with the aim to implement credit card and bank accounts into applications. Usage includes code to create a marketplace project, create a card, and create a bank account object.
Yammer, a microblogging-for-business site and winner of the top prize at the recent TechCrunch50 conference, has released an API to allow developers to build their own applications around the service (Yammer API profile). Created by the people behind genealogy site Geni, Yammer has taken the tried and tested Twitter model, which asks users to answer the question "What are you doing?" in 140 characters or less, and adapted it for businesses, turning the question into "What are you working on?"
Payment Rails has launched its Global Payout API which provides applications payout capabilities such as international ACH, real-time currency conversion, and global mass payouts. The platform provides access to a network for sending payouts using SWIFT, local banks, and other methods.