multiboot topic

A new bootable USB solution.

ventoy

A collection of GRUB files and scripts that will allow you to create a pendrive capable of booting different ISO files

aguslr

Super UEFIinSecureBoot Disk: Boot any OS or .efi file without disabling UEFI Secure Boot

ValdikSS

GRUB2-based file manager

a1ive

Create multiboot live Linux on a USB disk...

mbusb

A Boot Manager for Mac and PC

dakanji

A script suite to create multiboot USB stick for GNU/Linux distributions

mytbk

cscenter

grab a .iso, put in a folder, boot it up.

mpolitzer

Create a bootable disk

niemtin007