Curated list of design and UI resources from stock photos, web templates, CSS frameworks, UI libraries, tools and much more - bradtraversy/design-resources-for-developers.
Tools
A collection of free single-purpose online tools for web developers...
Assorted resources for frontend developers and web designers.
Appydev is a collection of awesome tools, resources, communities & podcasts for developers, designers & enthusiasts.
WebNav is a website navigation that collects excellent sites for frontend developers.
A collection of resources for developers, categorized and crowdsourced.
IndieHub is a community for Indie Makers to discover tools, launch products, and ship applications faster and better.