VMmanager - VMmanager is a QEMU/KVM server virtualization management software, which presents perfect tools for creating virtual machines, providing VPS services, and building cloud infrastructure.
QEMU - QEMU (short for "Quick EMUlator") is a free and open-source hosted hypervisor that...
Workstation Player - Download VMware Workstation Player for free today to run a single virtual machine on a Windows or Linux PC. Organizations use Workstation Player to deliver managed corporate desktops, while students and educators use it for learning and training.
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.
Parallels - Parallels Desktop is a virtualization software for Mac users to run Windows and Linux apps on OS X.
bochs - Bochs IA-32 Emulator provides a virtual PC that can run operating systems such as Windows, Linux, and BSD.