Pedro Trebbau Lopez
VirtualBox is an excellent option when you need to run an operating system on your machine without creating another partition on your disk and disturbing or changing the current configuration of your computer. It is excellent for users that need to test a different operating system, test a feature on some software or use some software on a different OS or a different version of your current one.
The great news is that it works with Windows, Linux, Mac and Solaris hosts. You can create virtual machines for Windows 8, Windows 7, Windows Vista, Windows 2000, Windows XP, Windows Server 2008 and 2003 in their different versions.
Visit their official page following this link.