Some really amazing browser components can be previewed on IBM. A Document Management Prototype is shown, which has a spreadsheet, an editor and a presentation component. I have been runing them under Internet Explorer 6 and Mozilla Firebird 0.6. As far as I can see, its completely made up with java script, dynamic html and cascading stylesheets.
I was not able to save anything back but if you see this, the future for applications will change and all go web based!
The browser will be the OS!