Clonezilla - Clonezilla is a suite of software that's designed to allow you to back-up and image new hard drives with your data.
Borg Backup - Deduplicating backup program with compression and authenticated encryption
Macrium Reflect - Macrium Software - the creators of Macrium Reflect backup, imaging and cloning software.
BURP - Burp is a network backup and restore program.
AOMEI Backupper - AOMEI Backupper is a software created to help a person backup, restore, clone, and sync their entire Windows system.
Restic - Easy: Doing backups should be a frictionless process, otherwise you are tempted to skip it.