What are some alternatives?
When comparing USB Mountr and UNetbootin, you can also consider the following products
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.
MultiBootUSB - MultiBootUSB is a software to create multi boot live Linux on a removable media i.e USB disk.
YUMI - YUMI (Your Universal Multiboot Installer), is the successor to our MultibootISOs.
Etcher - Why Etcher? Here at resin.
Easy2Boot - Flexible and configurable USB drive multiboot solution which also supports UEFI booting.
LinuxLive USB Creator - LinuxLive USB Creator is a free and open-source software for Windows. It will help you in your journey of discovery with Linux. For you, LiLi creates portable, bootable and virtualized USB stick running Linux.