Macrium Reflect - Macrium Software - the creators of Macrium Reflect backup, imaging and cloning software.
Borg Backup - Deduplicating backup program with compression and authenticated encryption
Win32 Disk Imager - Create and restore image backups of disk drives.
BURP - Burp is a network backup and restore program.
Clonezilla - Clonezilla is a suite of software that's designed to allow you to back-up and image new hard drives with your data.
Restic - Easy: Doing backups should be a frictionless process, otherwise you are tempted to skip it.