VirtualBox 4.0.0 Beta 1

VirtualBox software version 4.0.0 Beta 1 is a virtualization software that allows users to run multiple operating systems on a single computer. The software supports a wide range of operating systems including Windows, Linux, Mac, and Solaris. It also includes features such as guest additions for enhanced performance, virtual networking, and support for USB devices. Additionally, VirtualBox 4.0.0 Beta 1 includes improvements in graphics support, overall performance, and stability.