VirtualBox allows you to run more than one operating system at a time. This way, you can run software written for one operating system on another (for example, Windows software on Linux or a Mac) without having to reboot to use it. Since you can configure what kinds of "virtual" hardware should be presented to each such operating system, you can install an old operating system such as DOS or OS/2 even if your real computer's hardware is no longer supported by that operating system.
VMware Player Pro is a streamlined desktop virtualization program.
Android device emulator with more than 40 different virtual devices.
Pack program files and resources into a single executable file.
Simultaneously run multiple operating systems.
Powerful tool to recover all lost and deleted data from virtual machine drive.