The Bitfinex Go Sample Code by Bitfinex demonstrates how to access the API to integrate crypto-currency features into web services. Resources include account, orders, public channels sync, and WebSocket support.
A few weeks ago we reported on the release of the Kiva API, which provides access to the Kiva.org global microlending database. Not long after the API's release, blog posts from Bill Zimmerman and the Kiva team report that several developers are already working on Kiva mashups:
ICICI Bank, a leading private bank in India, has launched an API portal. The portal includes 250 APIs that allow partners to build innovative banking solutions. The company sees the portal as the next step in moving India towards the Open Banking model that continues to expand around the world.