VirtualBox

VirtualBox screenshots

Run multiple operating systems inside Windows using virtualization
Main window
VirtualBox 4.2 : Main window

Alternative downloads

MEmu
7.2.1
FREE
Run Android applications and games on your Windows PC.
Wake-On-LAN Virtual Machine
1.0.624
It allows to receive Wake-On-LAN magic packets and start up the virtual machine.
Windows Virtual PC
6.1.7600
FREE
Run multiple operating systems on a virtual environment inside Windows 7.