The E*TRADE PHP SDK by E*TRADE allows developers to access the E*TRADE trading platform from their PHP applications. The SDK includes libraries for handling authentication, accounts, market data, and orders.
While some folks tend to think about APIs are being little bits of arcane code that only developers care about it, the truth of the matter is that billions, possibly even trillions, of dollars are at stake in what will soon be a series of API wars. In no place is this more important than in mobile banking, where companies ranging from Google, the PayPal unit of eBay and lesser known entities such as MineralTree are all vying to usurp the role of traditional financial institutions.
Popular "hyperlocal" news and information service Outside.in recently released an API (our Outside.in API Profile) that provides developers with a way to access up-to-the-minute, location-based news. Based on its “news around you” feature, Radar, the API provides access to various types of information, including the latest news stories, blog posts, Twitter tweets and more located within 1,000 feet of a specific location.