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.
ROSA is a Russian company developing a variety of Linux-based solutions. Its flagship product, ROSA Desktop, is a Linux distribution featuring a highly customised KDE desktop and a number of modifications designed to enhance the user-friendliness of the working environment. The company also develops an “Enterprise Server” edition of ROSA which is based on Red Hat Enterprise Linux.