stylelint : A mighty, modern CSS linter that helps you enforce consistent conventions and avoid errors in your stylesheets.
Slickmap : Slickmap CSS is a simple stylesheet for displaying finished site maps directly from HTML unordered list navigation. It's suitable for most web sites –...
HTML EMAIL BOILERPLATE : This website and its sample code creates a template of sorts, absent of design or layout, that will help you avoid some of the major rendering problem...
UIkit : A lightweight and modular front-end framework
for developing fast and powerful web interfaces.
Selectivizr : CSS3 pseudo-class and attribute selectors for IE 6-8
