Windows hosts. In the Programs menu, click on the item in the VirtualBox group. On some Windows platforms, you can also enter VirtualBox in the search box of the Start menu.

macOS hosts. In the Finder, double-click on the VirtualBox item in the Applications folder. You may want to drag this item onto your Dock.

Linux or Oracle Solaris hosts. Depending on your desktop environment, an Oracle VM VirtualBox item may have been placed in either the System or System Tools group of your Applications menu. Alternatively, you can enter VirtualBox in a terminal window.