What is VirtualBox?
VirtualBox is a free, open-source virtualization software that allows you to run multiple operating systems on a single physical computer. It creates a virtual environment on your computer, known as a virtual machine, which acts as a separate entity from your host operating system. You can install and run multiple operating systems on separate virtual machines, each with its own virtual hardware and software resources.
VirtualBox is useful for testing and developing software, as it allows you to run different operating systems and applications in a controlled environment. It is also useful for running software that is not compatible with your host operating system, or for running multiple instances of the same operating system simultaneously.