Clonezilla - Clonezilla is a suite of software that's designed to allow you to back-up and image new hard drives with your data.
GoodSync - GoodSync provides highly reliable file backup and synchronization for both individuals and businesses.
Macrium Reflect - Macrium Software - the creators of Macrium Reflect backup, imaging and cloning software.
FreeFileSync - FreeFileSync is a free open source data backup software that helps you synchronize files and folders on Windows, Linux and macOS.
Rufus - Rufus is a piece of software that allows you to transform a portable drive, like a flash drive or other USB drives, into a bootable drive that can be used for a variety of purposes. Read more about Rufus.
rsync - rsync is a file transfer program for Unix systems. rsync uses the "rsync algorithm" which provides a very fast method for bringing remote files into sync.