Desktoptwo!

Desktoptwo is this awesome free web-based desktop or webtop (some call it a WebOS) 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.

It provides 1GB of FREE space and the upload/download speeds are very very good! Also, it offers features such as an RSS reader, mp3 player, IM, blog, mail etc etc.. Check it out..