Xchangeonline is a tool that provides currency conversion and rounding functionality that can be integrated with other applications. Their selling point is that, unlike other currency conversion tools available, their service is easy for anyone to use, reliable and affordable. The Xchangeonline API makes it possible for third party developers to access this functionality.
Digitalfolio's API connects retailers up to its rapidly expanding comparison shopping site, currently focused on appliances and electronics, and more recently toys. With seven of the largest retailers on board, including Sears, Amazon, Walmart and Target, Digitalfolio is rapidly becoming a site retailers need to have their wares on.