MultiBoot USB
This is a project that contains a collection of GRUB files and scripts that will allow you to create a pendrive capable of booting different ISO files.
Korora was born out of a desire to make Linux easier for new users, while still being useful for experts. The main goal of Korora is to provide a complete, easy-to-use system for general computing. Originally based on Gentoo Linux in 2005, Korora was re-born in 2010 as a Fedora Remix with tweaks and extras to make the system “just work” out of the box.