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:
Spotware has released the second version of its open trading platform API: cTrader Open API. Unlike its private API, which is available to brokers only, cTrader Open API is available for anyone who is interested in building tools for traders. V2.0 opts for Protocol Buffering instead of REST.