VirtualBox is a powerful x86 virtual machine software that not only features a rich set of functionalities but also offers excellent performance. Even more excitingly, VirtualBox recently became open-source and is now available as free software under the GPL license. VirtualBox can run on Linux and Windows hosts and supports installing a variety of guest operating systems, including Windows (NT 4.0, 2000, XP, Server 2003, Vista), DOS/Windows 3.x, Linux (2.4 and 2.6), OpenBSD, and more. If you've ever used virtual machine software before, you'll likely find using VirtualBox to be straightforward. And even if you're new to this, there's no need to worry—VirtualBox provides detailed documentation to help you get started quickly. **Tip**: To ensure proper display of Chinese characters, please run the program in an English directory.