For Firefox support, there is SlimerJS, a PhantomJS alternative that is coming along very nicely for testing your websites on the Gecko rendering engine. It eve

For Firefox support, there is SlimerJS, a PhantomJS alternative that is coming along very nicely for testing your websites on the Gecko rendering engine. It even supports WebGL. Try it as an alternative CasperJS engine: http://casperjs.org/ http://casperjs.org/