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.
Q4OS is a Debian-based desktop Linux distribution designed to offer classic-style user interface (Trinity) and simple accessories, and to serve stable APIs for complex third-party applications, such as Google Chrome, VirtualBox and development tools. The system is also very useful for virtual cloud environments due to its very low hardware requirements.