enquire.js : A lightweight, pure JavaScript library for responding to CSS media queries.
css3-mediaqueries-js : make CSS3 Media Queries work in all browsers (JavaScript library)
Normalize.css : A modern, HTML5-ready alternative to CSS resets
Normalize.css makes browsers render all elements more consistently and in line with modern standards. ...
lit : a ridiculously small responsive css framework
DD_belatedPNG : better PNG background-image support in IE6
Skeleton: A Dead Simple, Responsive CSS Boilerplate for Mobile-Friendly Development
