Galen Framework : Automated testing of look and feel for your responsive websites.
Layout testing seemed always a complex task. Galen Framework offers a simple solution...
lit : a ridiculously small responsive css framework
enquire.js : A lightweight, pure JavaScript library for responding to CSS media queries.
HTML5 Boilerplate : HTML5 Boilerplate helps you build fast, robust, and adaptable web apps or sites. Kick-start your project with the combined knowledge and effort of 100...
Breaking CSS is easy. Checking every responsive page element is hard. That’s why there's BackstopJS.