MultiBoot USB
This is a collection of GRUB scripts that allows to create a bootable pendrive (USB dongle, flash stick) supporting a number of different OS images. Simply copy ISO files under `/iso-imgs`. Both UEFI and Legacy BIOS boot modes can be enabled simultaneously.
Antergos is a modern, elegant and powerful operating system based on Arch Linux. It started life under the name of Cinnarch, combining the Cinnamon desktop with the Arch Linux distribution, but the project has moved on from its original goals and now offers a choice of several desktops, including GNOME 3 (default), Cinnamon, Razor-qt and Xfce. Antergos also provides its own graphical installation program.