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.
NTLite - The Ultimate Windows Customization Tool
YUMI - YUMI (Your USB Multiboot Installer), is a tool that allows you to boot multiple ISO files from one USB drive.
Win Toolkit - BUGS: Do not post bugs in the comments.
Balena Etcher - Flash OS images to SD cards & USB drives, safely and easily.
Ultimate Windows Tweaker - Ultimate Windows Tweaker is a freeware Tweak UI Utility for tweaking and optimizing Windows.