TagUI : TagUI is a general purpose tool for automating web interactions
PhantomJS : PhantomJS is a headless WebKit with JavaScript API. It has fast and native support for various web standards: DOM handling, CSS selector, JSON, Canvas...
Browserling : Live interactive cross-browser testing
Babel : Babel will turn your ES6+ code into ES5 friendly code, so you can start using it right now without waiting for browser support.
SlimerJS : A scriptable browser for Web developers
JavaScript End to End Testing Framework. Fast, easy and reliable testing for anything that runs in a browser.