If you run multiple operating systems on your Mac in virtual machines, then you likely use either Virtual Box, VMWare Fusion, or Parallels Desktop. For the most part, when you set up a VM on your Mac with any of these solutions, it will run as a window that shows you the graphical view of the virtualized OS. However, if you use your VMs for servers instead of running desktop applications, then you can use a small trick to run them in the background, and thereby save both a little processing power and some desktop clutter. Continue reading →