VirtualBox is powerful Cross-platform Virtualization Software for x86-based systems.
"Cross-platform" means that it installs on Windows, Linux, Mac OS X and Solaris x86 computers. And "Virtualization Software" means that you can create and run multiple Virtual Machines, running different operating systems, on the same computer at the same time. For example, you can run Windows and Linux on your Mac, run Linux and Solaris on your Windows PC, or run Windows on you Linux systems.
Oracle VM VirtualBox is available as Open Source or pre-built Binaries for Windows, Linux, Mac OS X and Solaris.
Oracle VM VirtualBox 4.2.12 was released 12th April, 2013.
Oracle VM VirtualBox 4.2.10 was released 15th March, 2013.
Oracle VM VirtualBox 4.2.8 was released 27th February, 2013.
Oracle VM VirtualBox 4.2.6 was released 19th December, 2012.
Oracle VM VirtualBox 4.2.4 was released 26th October, 2012.
Oracle VM VirtualBox 4.2.2 was released 18th October, 2012.