Clonezilla is a free software disaster recovery, disk cloning and deployment solution.

Redo Backup and Recovery is free backup and disaster recovery software. It runs from a bootable Linux CD image.

Win32 Disk Imager is a windows tool for writing images to USB sticks or SD/CF cards.

Hard Disk Sentinel monitors and tests the health of your computer's hard disks.

Macrium Reflect is a backup and disk imaging software program for Microsoft Windows.

AX64 Machine makes backup and recovery simple by performing images of your Windows system and allowing you to restore your PC to a previous point in time.

Disk Utility is a system utility for performing disk and disk volume-related tasks on the macOS.