The TradeKing Java Sample Code by TradeKing demonstrates how to interact with the API. It provides authorization guides to make requests and receive responses. TradeKing API integrates account management, trading activity, and market data into web services.
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:
TazWorks has made a name for itself as a background screening technology provider. It is bolstering its portfolio with the release of the CreditConnect API. The API allows users to share and monitor credit information. TazWorks has partnered with Experian for the credit reporting features.