When Internet browsing you can get the most varied and curious applications that have ever existed. These applications can do things that only a few years ago were thought to be impossible to do.
This is the case of VirtualBox, a great tool that brings the possibility of creating “virtual machines” with the possibility of assigning to each the operating system the user wants.
In this way, the user will have as many computers as his physical storage unit allows him to.
VirtualBox offers the capability of creating such computers and selecting operating systems such as Windows 95, 98, NT, 2000, XP, 2003, Vista, Linux, DOS, Solaris and many more.
In a few words, if the user has a big enough disk unit, he could have many virtual computers in his and without consuming many system resources.