QEMU

Quickly create and run highly optimised desktop virtual machines for Linux, macOS and Windows; with just two commands. You decide what operating system you want to run and Quickemu will figure out the best way to do it for you. For example:

AQEMU is GUI to QEMU and KVM emulators, written in Qt4. The program have user-friendly interface and allows to set up the majority of QEMU and KVM …

A simple GNOME application to access virtual systems. It is based on a design from Jon McCann and Jakub Steiner.

Qemu Simple Boot lets you to Boot ISO images without having to burn them to disc first , it is is a portable freeware virtualization tool