Software virtualization is where users can install a OS inside another OS, that uses the base system resources and hardware resources and store information in virtual hard disc making it easy to test out new OS version and beta and RC versions like Windows 7 without the need to install the OS and have the risk of data loss or corruption while testing out new softwares.

VirtualBox is virtualization tool from Sun Microsystems for Windows, Linux, Macintosh and OpenSolaris hosts and supports a large number of guest operating systems.[Complete List of supported guest OS.] The latest version also has a Web Console (VBoxWeb) that uses the following technologies

• Sun VirtualBox
• Python and the VirtualBox Python API
• VirtualBox RDP Web Control (Flash based RDP client)
• Prototype (JavaScript library)
• jQuery and jQuery UI (JavaScript libraries)

to let you access and control your virtual machine from a browser. VirtualBox Download.

Via – Ghacks