What is a painless and free way to test Internet Explorer 10 on a Mac?
It’s the same end result as the tutorial above, but ievms is way easier—all the steps are automated. Just run:

curl -s https://raw.github.com/xdissent/ievms/master/ievms.sh | env IEVMS_VERSIONS="10" bash

and you’ll have a fully functional VM with IE10.