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.
Tiny PXE Server - Small portable standalone PXE server (dhcp+tftp+http)
Balena Etcher - Flash OS images to SD cards & USB drives, safely and easily.
ERPXE - ERPXE project simplifies the process of installing and customizing a Multi-Boot PXE server.
YUMI - YUMI (Your USB Multiboot Installer), is a tool that allows you to boot multiple ISO files from one USB drive.
Serva 32/64 - Serva is an Automated PXE Server Solution Accelerator based on an all-in-one portable multi-server engine