VirtualBox - VirtualBox is a powerful x86 and AMD64/Intel64 virtualization product for enterprise as well as...
Wine - Open Source Software for running Windows applications on other operating systems.
QEMU - QEMU (short for "Quick EMUlator") is a free and open-source hosted hypervisor that...
CodeWeavers CrossOver - Don't buy a Windows license, don't reboot and don't use a Virtual Machine. Try a free trial of CrossOver to run your Windows software on Mac, Linux and Chrome OS.
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.
PlayOnLinux - PlayOnLinux will allow you to play your favorite games on Linux easily