I’m a fan of one page websites and these single page (mostly!) sites are a great place to look for great resources and links for any web designer or developer.
Currently listing over 650 resources (but seems to be idling of late) we have For Web Designers, the main page displays the top 20 resources from each of its 18 categories.
Corkdump has resources from 11 categories, and is the most customizable of the handbooks listed here, you can reorder the categories displayed, show the top rated or limit to your favorite resources.
Agency Tools Dashboard is “The definitive resource list for designing, developing, marketing & maintaining websites.” There are many categories grouped into Web Design, Web Development, Online Marketing and Site Maintenance groupings.