SOS Online Backup with LiveProtect provides continuous online backup of all your files - even open files! SOS also provides you with global roaming access to all your computers using just a webbrowser - and lets you share your files with anyone with an email address with one click. SOS keeps an unlimited version history for your data - so if you want to see your books how they looked last april 14th - no problem! Just roll it back!

The license of this software is Free Trial Software, the price is $19.95, you can free download and get a free trial.