Introducing Mozilla Prism
Prism is a new project from Mozilla Labs that essentially dresses up a web applications as desktop applications. Prism can create desktop, start menu, and quick launch desktop shortcuts for any given URL. The shortcuts launch the web application in a undecorated application window running Firefox underneath.
Prism works well for web applications, where all the links point to the domain where the application is running from. If you there are links to other domains, Prism will open those links in FireFox instead of the Prim application window. Other than launching the web application in a undecorated application window, I don’t see how different this is from just creating a internet shortcut. The web application is not downloaded, you still need internet access, and you are still limited by the browser limitations for it to really feel like a desktop application.