Creating a new virtual machine is much more time-consuming than in Parallels Desktop or VMWare Fusion Player, and you’ll need to know details such as the amount of RAM, CPU cores, and hard drive space to allocate to your VM. The VirtualBox interface can be intimidating, as it shows a lot of technical details and specifications without many tips or descriptions for beginners. The interface looks pretty dated and isn’t as streamlined as other virtual machine software, though VirtualBox has made some improvements that give it more polish. VirtualBox supports a great number of guest operating systems going all the way back to Windows 98, and you can even run your own servers. It’s designed with developers and IT professionals in mind, so VirtualBox provides you with a great deal of control over your virtual environments. VirtualBox is a free and open source virtual machine software from Oracle.