The Bloomberg API provides free, unrestricted access to raw financial data on current market trades (either real-time or delayed), reference data on historical information, and records of intraday trading. This library allows OSX users to develop their API in Java. As part of their Open Market Data Initiative Bloomberg API libraries are offered under a "free-use" license, which allows unrestricted access to the interface's header files, documentation, and programming examples. Users should note that the OSX libraries are only compatible with OSX 10.7 and later, and can only be used with the Bloomberg Server API and B-Pipe data feed products (not the Desktop API).
More than ever, websites are seeking out revenue opportunities. And for services that provide value, customers are willing to pay. However, if creating an e-commerce system is too much distraction for your development team, try to get yourself in on the Chargify beta.
Should you let people scrape data from your site or offer a web service API instead? This is one of the classic arguments for offering an API: to get better control over how your data is accessed and who gets access. A recent news story about Flybe, Europe's largest independent regional airline carrier, demonstrates a case where this was the main driver for creating an API. For Flybe, having third party service and applications access their booking engine is very important to them, but they want to make it more structured and reliable.
Dwolla, highly innovative payment network, celebrates its second anniversary by hosting a hackathon in its birthplace: Des Moines, Iowa. To complement the unusual choice of geography for a hackathon, Dwolla chose a name to fit the occasion: Old MacDonald Hackathon. Dwolla and co-host, Silicon Prairie News, aim for 50 developers to enjoy the scene and conjure up some disruptive applications utilizing Dwolla's APIs.