Intern JS comparison table - http://theintern.io/#compare
HN threads for Intern JS:
https://news.ycombinator.com/item?id=5666938
https://news.ycombinator.com/item?id=7759227
https://news.ycombinator.com/item?id=8155898
nightwatch.js thread on HN - https://news.ycombinator.com/item?id=7156162