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...
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.
bochs - Bochs IA-32 Emulator provides a virtual PC that can run operating systems such as Windows, Linux, and BSD.
Proxmox VE - Proxmox is an open-source server virtualization management solution that offers the ability to manage virtual server technology with the Linux OpenVZ and KVM technology.
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.