MultiBoot Live USB
XBOOT - Multiboot USB ISO Creator
XBOOT is a Windows based Multiboot USB ISO Creator utility. It can be used to quickly create Live Bootable USB flash drives from ISO files. This application can also create a Multiboot CD or Multiboot DVD from an ISO file.
YUMI MultiBoot Bootable USB Media Creation Tool
YUMI (Your Universal Multiboot Installer), is a Multiboot Live USB bootable Windows media creation tool or MultiBoot ISOs utility. This software can also be used to create a USB Installer for Windows or Linux. It helps automate the process of building custom Live bootable Linux USB sticks containing multiple ISO files of your choosing.