MultiOS-USB

A single device with multiple ISO files. Easy to use: install once, add ISO files and boot computers from there.

BIOS and UEFI support
Secure Boot support (boot, manage uefi keys)
Install UEFI drivers
Launch .efi executables and other boot loaders
Boot Linux from .iso files
Boot the Windows 10/11 installer from the ISO (currently SB needs to be disabled during installation)
Launch Linux installer from network (experimental)
Boot locally installed systems: Linux, Windows
Automatically update configuration files
Without background services
exFAT file system support
Automatic detection of compatible ISO images (GRUB loopback)
Support for systems without loopback support
Allows customization of the ISO boot menu (for example: custom kernel options)
USB, SSD, nvme, mmcblk, loop, nbd and virtual disk support
Support x86, x86_64