Try eyeOS - your online desktop Operating System.

What is eyeOS..?

eyeOS is a disruptive desktop entirely usable from a web browser. It includes an office suite and some collaboration aplications, as well as a full framework to develop new web apps as if they were desktop apps. It's Free and Open Source - so you can host your own system, keeping all your data under your control.

With just an Internet capable device you can access all your files, no matter where you are. That is, just open your eyeOS desktop in an internet cafe in India. Travel to USA and open eyeOS system from another computer. It is exactly the same desktop, with all your documents and applications available.  eyeOS belongs to Cloud Computing technology. It is built as a cloud OS so that any user who has an account in the eyeOS can access to his eyeOS desktop from any computer connected to internet from any geographical location.
One thing you need to know is that its working speed depends on the internet connection bandwidth. You can upload, share and create documents, spreadsheets, presentations and paint. Its is having all the capabilities of office automation. For using eyeOS you need to signup and its free to use OS. Visit eyeOS , signup and enjoy..!! After using, tell us u liked it or not, what are its limitations.. Do comment...
Thank you..,