ncdu - A disk usage analyzer with an ncurses interface, aimed to be run on a remote server where you...
Acronis Cyber Protect Home Office - (Formerly Acronis True Image) Complete protection for your digital life
Baobab Disk Usage Analyzer - Baobab Disk Usage Analyzer is one of the light-weight disk analyzers that offers you a chance to view and monitor the disk usage & folder structure without any hassle.
Macrium Reflect - Macrium Software - the creators of Macrium Reflect backup, imaging and cloning software.
K4DirStat - K4DirStat is the successor of former KDirStat.
Clonezilla - Clonezilla is a suite of software that's designed to allow you to back-up and image new hard drives with your data.