We have been working on hypervisor.framework for more than 6 months now, since it came out to develop our native virtualization for OS X, http://www.veertu.com As a result, we are able to distribute Veertu through the App Store. It’s the engine for “Fast” virtualization on OS X. And, we see now that docker is using it for containers. We wish that Apple would speed up the process of adding new Apis in this hypervisor.framework to support things like bridge networking, USB support, so everything can be done in a sandboxed fashion, without having to develop kernel drivers. I am sure docker folks have built their kernel drivers on top of xhyve framework.