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.
Balena Etcher - Flash OS images to SD cards & USB drives, safely and easily.
WinUSB - multiboot - WinUSB - simple, portable and lightweight tool, lets you create multiple Windows bootable USB flash...
UNetbootin - UNetbootin is a utility for creating live bootable USB drives. The name of the software is short for Universal Netboot Installer, and its most prevalent use has been to create bootable versions of Linux distributions on a USB drive.
YUMI - YUMI (Your USB Multiboot Installer), is a tool that allows you to boot multiple ISO files from one USB drive.
SUSE Studio ImageWriter - Utility for writing raw disk images & hybrid isos to USB keys.