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...
enquire.js : A lightweight, pure JavaScript library for responding to CSS media queries.
Skeleton : Skeleton: A Dead Simple, Responsive CSS Boilerplate for Mobile-Friendly Development
Spectre.css : Spectre.css is a lightweight, responsive and modern CSS framework for faster and extensible development.
lightweight and clean starting point for your...
Breaking CSS is easy. Checking every responsive page element is hard. That’s why there's BackstopJS.