As a win32 developer moving into web deveopment the last few years, I found the
web desktops based on extjs very interesting.
Coolite Desktop (broken)
Ex
No, because the web is the OS, the platform is the browser.
I use several web based application including Google Docs, Gmail and so on. Not all of them are from the same provider. I access them all using my browser.
Forcing me into using a "web desktop" is like the portal thinking of the ISP's ten years back - forcing users into your own "world" to make them use only the application you provide. Instead of just acting as a gateway to reach all the possible choices out there.
IMHO, this is why web desktops will fail. The OS of a PC is there to tap into all the possible resources of your desktop, in the same way the browser is for the internet. Web desktops is to me equal to install yet another OS on your current one and limit yourself to use only that.