MultiBoot USB Easy and functional application to create multi-boot drives on a single USB drive to select between different operating systems like Linux or an antivirus or rescue utility.
EasyUEFI Change and create EFI and UEFI boot options without the BIOS.
Rufus Bootable USB creation utility which supports ISO image files for a number of new and old BIOS and operating systems including Windows, Linux, Mac OS, Android and others.