Codrops
Codrops is a web design and development blog that publishes articles and tutorials about the latest web trends, techniques and new possibilities.
Unheap
Unheap is a repository for browsing & staying on top of the latest jQuery plugins and JavaScript scripts.
Codyhouse
A free library of ready-to-use HTML, CSS, JS experiments for designers and developers.
Smashing Magzine
Smashing Magazine — for web designers and developers