An aptly named application, Clonezilla is a monster. And although monsters are powerful, they can also be scary. For the intrepid power user or IT admin, Clonezilla Server Edition is the logical choice for high-volume image deployment. Through multicasting, Clonezilla can transfer a single disk image to multiple hard drives simultaneously. It’s open source, and, for business use, the only completely free hard drive clone software in its class. It does come in a slightly less intimidating flavor for smaller jobs. Clonezilla Live is more suited to single, local machines. Still, some computer savvy is required.