http://desktoptwo.com/

Desktoptwo is a free web-based desktop or webtop (some call it a WebOS, although we feel that's a bit premature... for now) that mimics the look, feel and functionality of a local computer, all contained within one browser window and fully accessible from any Internet-connected device.
Think of Desktoptwo as your free mobile home on the Internet with all of your personal information, programs and applications in one easy-to-use, feature-rich location and, because all you need is a web browser to access your account, even the simplest web device (whether yours or someone else's) can become your personal space.
What's more... no local installation means that Desktoptwo leaves no trace behind, which is why we say that "wherever you go, whatever you do, you can bring your desktop too."
Ein Online OpenOffice ist ebenso enthalten wie 1 GB kostenloser Speicher.
http://desktoptwo.com/