Oracle VM VirtualBox

Oracle VM VirtualBox is an x86 virtualization software package, originally created by software company innotek GmbH, purchased by Sun Microsystems, and now developed by Oracle as part of its family of virtualization products. It is installed on an existing host operating system; within this application, additional guest operating systems, each known as a Guest OS, can be loaded and run, each with its own virtual environment.
Supported host operating systems include Linux, Mac OS X, Windows XP, Windows Vista, Windows 7, Solaris, and OpenSolaris; there is also support to Free-BSD.


The great advantage is that, if  you want to try an operating system in your computer, you don't need to have it's disk. You don't need to reboot your system, instead just have the ISO image file of the OS. The ISO image file can be easily created using any image creation software's

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virtual box from my computer