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.
Macrium Reflect - Macrium Software - the creators of Macrium Reflect backup, imaging and cloning software.
YUMI - YUMI (Your USB Multiboot Installer), is a tool that allows you to boot multiple ISO files from one USB drive.
FreeFileSync - FreeFileSync is a free open source data backup software that helps you synchronize files and folders on Windows, Linux and macOS.
Balena Etcher - Flash OS images to SD cards & USB drives, safely and easily.
DriveImage XML - DriveImage XML is an easy to use backup and restore program for Windows XP and Vista. Part of Runtime's Data Recovery Software products.