Oracle VM VirtualBox is a cross-platform virtualization application that enables users to run multiple guest operating systems (OSes) simultaneously on a single physical machine. VirtualBox supports a wide range of host operating systems, including Windows, macOS, Linux, and Solaris, making it accessible to a diverse user base. With its intuitive graphical user interface (GUI) and extensive feature set, VirtualBox simplifies the process of creating, configuring, and managing virtual machines, providing users with a flexible and cost-effective solution for running multiple OS environments on a single computer.