YUMI (Your Universal Multiboot Installer) is a portable application designed to create a Multiboot USB Flash Drive. It can contain the multiple operating systems, antivirus utilities, disk cloning, diagnostic tools, and more.
Contrary to MultiBootISOs which used grub to boot ISO files directly from USB, YUMI uses syslinux to boot extracted distributions stored on the USB device. And reverts to using grub to Boot Multiple ISO files from USB, if necessary.
Aside from a few distributions, all files are stored within the Multiboot or YUMI folder (depending on version). That makes nicely organized Multiboot USB Drive which you can still use for other storage purposes.
The application works much like Universal USB Installer, except you can use it to install more than one distribution to run from your USB. Also you can uninstall the distributions using the same tool!
YUMI is an easy to use installer script created using NSIS. The purpose is to help automate the creation of a bootable USB Flash Drive. You can use that to boot multiple Linux based distributions (one at a time).
The end result should be a bootable USB Flash drive. That will get you up and running with your chosen Live Distributions. All without having to do the research and perform the steps by hand.
YUMI utilizes a Syslinux MBR to make the chosen drive bootable. You can extract Distributions using 7zip to the multiboot folder on the USB device. And a custom syslinux.cfg file along with distro independant configuration files are used to boot each distribution. Also you can use Grub4DOS grub.exe to boot ISO files directly.