Ventoy

1.0.50

Create bootable USB from dozens of ISO files containing different versions of operating systems and use them without formatting the disk via this tool

Ventoy is a lightweight and portable tool that provides a quick way to make bootable USB drives from ISO files. Reinstalling your operating system via a bootable USB comes with the advantage that you do not need to spend time formatting the disk. Instead, you simply insert the USB in the dedicated port and reboot your PC.
While there are numerous tools that create bootable USB, most of them rely on the OS's kernel which needs to access the hardware storage media for the source. The idea behind the program is different and entails that the information is saved to runtime memory before booting. Therefore, the OS can determine that the data is booted from a virtual disk, find the source medium needed for the operation and continue to boot without having to create the standard hook, as with the classic booting.
It is worth mentioning that the tool allows you to add as many ISO files as you want, case in which, you are welcomed by a menu following the boot. The program supports ISO files over 4 GB as well native UEFI and Legacy BIOS and it works with dozens of operating systems, as the developer states there have been more than 160 files tested.