Clonezilla

Just like Redo Backup and Recovery, Clonezilla isn't a program you install: it's a bootable environment which you can launch from a CD or USB flash drive.

And it's seriously powerful, too: you're able to create an image of a drive; restore an image (to one drive, or many at the same time); or clone a drive (copy one drive to another), with plenty of low-level control over how this works.

While Redo Backup and Recovery focuses on ease of use, though, Clonezilla is more about providing advanced options, like "run unattended Clonezilla via PXE booting". It's not complicated - it's probably the best free disk cloning software around - but the program is aimed at experienced users, and backup beginners should look elsewhere.