Project San Dimas: eBay's Desktop Application

Project San Dimas is suppose to be eBay's new and potentially disruptive desktop application. In other words, San Dimas is a program that resides and runs from your own hard drive but uses eBay's extensive breadth of API's to bring you the functionality of the website along with new desktop-only features. The primary advantages, apart from the added features, are that the application can be designed from scratch (as opposed to having to work within the boundaries of a browser), that the application supports offline use (such as listing an item offline which then syncs automatically when online), and that it offers users a much higher degree of customization.

complete article from Seeking Alpha