Responsive front-end-framework for intuitive web development. Supports mobiles, tablets and modern browsers back to IE8. Comes with some jQuery plugins for slideshows, modals, etc. It’s build with SASS.
Twitter Bootstrap
Powerful adaptive front-end-framework for intuitive web development. Built for desktop browsers (incl. IE7), tablets and mobiles. Comes with a lot of jQuery plugins for UI interactions. It’s build with LESS.