BuddyBackup

BuddyBackup gives you unlimited online backups of your files for free, by allowing you to easily and securely backup your data onto your buddies. You can even backup to USB drives and other locations (such as NAS and SAN) just as easily! BuddyBackup takes the effort out of backups. You only need a couple of clicks to setup and then it will silently run in the background backing up your files and there are no backup schedules to set up. BuddyBackup also continuously backs up your files the moment they change. This means that you have up-to-the-second protection.