Various folks on HN mentioned this is in the VMware thread:<p>OS X Yosemite now has an inbuilt hypervisor called xhyve: <a href="https:&#x2F;&#x2F;developer.apple.com&#x2F;library&#x2F;mac&#x2F;releasenotes&#x2F;MacOSX&#x2F;WhatsNewInOSX&#x2F;Articles&#x2F;MacOSX10_10.html" rel="nofollow">https:&#x2F;&#x2F;developer.apple.com&#x2F;library&#x2F;mac&#x2F;releasenotes&#x2F;MacOSX&#x2F;...</a><p>Veertu uses xhyve, so unlike VMWare, Parallels, VirtualBox etc it doesn&#x27;t need any additional kernel drivers. OS X does all the CPU management, the entire app is 20MB.