: In this post, we will see how to install CentOS on VirtualBox. VirtualBox, originally developed by Sun MicroSystems and now owned by Oracle, is a software that gives you the ability to work with several operating systems on your computer at the same time. You can install and run CentOS on VirtualBox. CentOS is a Community Enterprise operating system which mainly focuses on the server. It is a part of Linux Operating System Distribution, and it is free to use.