emilkr

animate.css

A big ol' goody bag filled with CSS animations for WebKit, Firefox and beyond.

beautiful-web-type

A showcase of the best typefaces from the Google web fonts directory.

bootstrap

CSS toolkit from Twitter

class-central

Source code for class-central.com

cssdock

An experiment mimicking the Dock of OS X using only CSS.

FlexSlider

An awesome, fully responsive jQuery slider plugin

foundation

An easy to use, powerful, and flexible framework for building prototypes and production code on any kind of device. Start here, build everywhere.

google-vector-layers

A little help to viewing ArcGIS Server, Geocommons, Arc2Earth, etc. vector data in Google Maps

hnmobile

Hacker News mobile web app

html5-boilerplate

A professional front-end template that helps you build fast, robust, adaptable, and future-proof websites.

impress.js

It's a presentation framework based on the power of CSS3 transforms and transitions in modern browsers and inspired by the idea behind prezi.com.

ingrid

A fluid CSS layout framework

list

Do you want a 7 KB cross-browser native JavaScript that makes your plain HTML lists super flexible, searchable, sortable and filterable? Yeah! Do you also want the possibility to add, edit and remove items by dead simple templating? Hell yeah!

masonry

The flip-side of CSS Floats. jQuery plugin that rearranges item elements to a grid.

path-menu

Path menu in pure CSS3

Respond

A fast & lightweight polyfill for min/max-width CSS3 Media Queries (for IE 6-8, and more)

ResponsiveSlides.js

Responsive slideshow plugin that weights under 1kb

reveal.js

CSS 3D slideshow tool

Skeleton

Skeleton: A Beautiful Boilerplate for Responsive, Mobile-Friendly Development

turn.js

www.html5rocks.com

....a top-notch resource for web developers