Hirens BootCD - Hirens BootCD is a powerful, all-in-one boot disk utility that will help you resolve and make reformatting your computer easily.
Acronis Cyber Protect Home Office - (Formerly Acronis True Image) Complete protection for your digital life
Rescatux - Rescatux is a GNU/Linux rescue cd (and eventually also Windows) but it is not like other rescue...
HDclone - HDClone by Miray Software is the universal tool for cloning disks and other mass storage media fast and easily. To be used for backups, data recovery, system migration and professional duplication of several disks at a time.
Ultimate Boot CD - The last Boot CD you'll ever need. You need the Ultimate Boot CD if you want to:
Clonezilla - Clonezilla is a suite of software that's designed to allow you to back-up and image new hard drives with your data.