QEMU - QEMU (short for "Quick EMUlator") is a free and open-source hosted hypervisor that...
VirtualBox - VirtualBox is a powerful x86 and AMD64/Intel64 virtualization product for enterprise as well as...
bochs - Bochs IA-32 Emulator provides a virtual PC that can run operating systems such as Windows, Linux, and BSD.
VMware Workstation - VMware Workstation is a multiple operating system handler to easily evaluate the any other type of new operating systems.
Portable Virtualbox - Portable-VirtualBox is a free and open source software tool that lets you run any operating system from a usb stick without separate installation. Installation instructions. Download and run Portable-VirtualBox_v5.
QEMU Manager - It is a GUI for the open-source virtualization software QEMU.