In fact, back at 10 years ago (1997) Desktop.com had the vision and actually build up a business for what Google app is trying to do today. Back at the time some people from the North think it's crazy and useless for fat desktop-like applications to run on the web.
Well, those people might be 50% correct, desktop.com is no longer in business and you can only see it at web archive (the original desktop.com Web OS); however the same old techiques (now can be called AJAX), isn't a joke anymore.
As I bring back my old little Mac Kernel back to life, it is still works like a champ in FireFox and IE 7. Allow popup window for the moment and click the image above to bring some of your good old memory back...
Thanks Tim for showing off the work.