Universal USB Installer is described as 'Live Linux USB Creator that allows you to choose from a selection of Linux Distributions to put on your USB Flash Drive. The Universal USB Installer is easy to use. Simply choose a Live Linux Distribution, the ISO file, your Flash Drive and, Click' and is a very popular bootable usb creator in the os & utilities category. There are more than 25 alternatives to Universal USB Installer for a variety of platforms, including Windows, Linux, Mac, Flathub and PortableApps.com apps. The best Universal USB Installer alternative is Rufus, which is both free and Open Source. Other great apps like Universal USB Installer are Ventoy, balenaEtcher, UNetbootin and YUMI exFAT.
balenaEtcher is really the easiest program to make bootable usb sticks: you select your iso/img, you select your usb stick and you let your computer do the rest of the magic and a few minutes later you are ready to go!