CrashPlan is a freeware handy backup tool that facilitates local and friend-based remote backups which is available for Windows, Mac, and Linux.
CrashPlan can back up to multiple locations including local disks, networked disks, remote server space you have access to, your friends’ remote computers, and similar to Mozy and Carbonite, to CrashPlan’s remote backup servers if you subscribe to their service.
Assuming you have a remote location (a personal web server, friend’s computer, or work computer) you can use as your backup location you’ll be in business. Your remote data is encrypted so you don’t have to worry about your friend discovering something you may want to keep confidential.
The setup and user interface for CrashPlan are straight forward, you shouldn’t have any trouble getting things up and running. Most people won’t find that they need the additional perks that come with an upgrade to the premium service, which makes CrashPlan an appealingly free option for personal backup.