Woork

Woork isn't exactly targeted at Drupal.
In fact, I haven't seen anything about Drupal on it yet. The search results for Drupal yield nothing, and I must say I was quite disappointed to see the list of CMS platforms and no reference to Drupal... *sigh*

But once you visit the site, you will realize how useful it is.
From a design point of view, this site provides you with a number of Free Font downloads, Icons, and tips on how to create specific looks. The site is also packed with tips for Javascripts, PHP, and CSS. This Antonio Lupetti guy has put some time into creating this site and I think he has really hit on some key components. The site is packed with useful information.

I specifically like his top resource lists. He has lists for Handwritten Fonts, Type Fonts, Icons, Awesome Tutorials for Web Designers, and so much more.

Much props, Antonio!