Do you want to have a USB stick with many operating systems that you can either install or just run? Here are two tools that will do the job for you.

Do you want to have a USB stick with many operating systems that you can either install or just run? Here are two tools that will do the job for you.

With the USB Sticks now being large capacity why waste them powering them with a single operating system.
You can put on a stick as many operating systems as it can fit, and even better they can run or even be installed on the computer you connect it to.
Multiboot USB drives can host live Linux distributions and installation media for Windows. That is, small operating systems designed to provide maintenance to a computer, separate from the operating system it already has.
Of course you will need a utility to create a Multiboot USB. Let's look at two such free programs that run under Windows and that can create USB multi-boot. Make sure you are using a high-quality, high-capacity USB drive, preferably larger than 8 GB.

WinSetupFromUSB , recently updated to version 1.10, is an intuitive choice of multi-boot utility software. It's free, now runs on Windows 11, on all architectures, and is portable. It supports Windows 2000 and above, as well as Linux and BSD.
WinSetupFromUSB is easy to use. Download the latest version, unzip it and run the exe file that matches your computer architecture.
If you are interested, select the Show Log option to see detailed information about what is happening.
When the installation is complete, you will see a Job Done message.
If you want to install a second operating system, run the above procedure again with another operating system.
Overall, WinSetupFromUSB is quite simple to use and has a fast registration time. It also has QEMU function and is a small, portable application.
Download: WinSetupFromUSB (Free)

YUMI is a highly respected tool for creating multi-boot USB drives.
YUMI has a slightly different workflow. First, you select from the list which distribution you want to install, and then you tell it where the corresponding ISO is located on your hard drive (you can follow the provided link to the home page of the distribution you chose).
When you are ready, click Greate. It will take a few minutes. You can then repeat the process to add additional operating system images to your drive.
Download: YUMI (Free)
To use the USB sticks, remember that you must first change the boot boot order on your computer.
Also, remember that you can not switch between operating systems after booting into an operating system. You must select the operating system that you want to use during the boot process, and if you want to switch operating system, you must restart your computer.
AIOBoot ( https://www.aioboot.com/ ) is by far the best. It supports UEFI, Grub2 & SecureBoot – so you don't have to mess with the BIOS if it's password protected – when the others want Legacy Mode and basically use the outdated GRUB4DOS
Another useful tool for multiple bootable operating systems is Ventoy. Which has its own bootloader and allows you to simply "throw" the ISO in the stick and boot from what you choose each time.
http://iguru.gr/ventoy-efkola-bootable-usb-windows-kai-linux/
I have been using it for years and I recommended it, I also saw the specific article you did for the Ventoy, I just believe since the article talks about multiple functionalities on a stick the Ventoy should not be missing from this list! Thank you for the information.