[thrownaway954]

it's not just windows per say, the fact that you can have multiple linux installations without going through the hassle of setting up something like vmware or virtualbox (with all of their quirks) is such a timesaver.

[rbanffy]

It's kind of trivial to do that with Docker, either on Linux or on a Mac. On Linux you also have KVM and, on Ubuntu, you have LXC.