Dropbox

Dropbox screenshots

Store, share, synchronize, and work on files through the cloud
Main window
Dropbox 73.4 : Main window

Alternative downloads

Ubuntu One
4.2
FREE
Store and share files in the Ubuntu One cloud storage.
Orange Cloud
2.1.1
FREE
You can keep records such as pictures, videos, music, documents in the cloud.
Zenfolio Dropbox
FREE
Upload photos right from your desktop.