Any file you save to Dropbox also instantly saves to your computers, phones, and the Dropbox website.
2GB of Dropbox for free, with subscriptions up to 100GB available.
Your files are always available from the secure Dropbox website.
Dropbox works with Windows, Mac, Linux, iPad, iPhone, Android and BlackBerry.
Works even when offline. You always have your files, whether or not you have a connection.
Dropbox transfers just the parts of a file that change (not the whole thing).