Jetspeed Desktop is a Web 2.0 solution for portlets. Combining server-side Jetspeed Ajax services with client-side services, the Desktop is a shift in the way portlets are viewed and aggregated. The key change here is that Jetspeed 2.0 is a servlet-centric application: every request goes back to the server. The user interfaces experience is driven by HTTP page paradigm.
Jetspeed Desktop is a client-side centric solution. The user interface is controlled on the client-side, where it intuitively belongs. Key features of the portal have been moved to the client side:
The server-side does what it does best, model and persistence: stores the model and user information
The desktop holds portlets that are displayed to a user. With the first prototype, a desktop is modeled upon a single PSML page.