Hack a Day : Hackaday serves up Fresh Hacks Every Day from around the Internet.
Origami Studio : Origami is a free tool for designing modern user interfaces.
Color Wizard : The Color Wizard is a color matching application for anyone who wants to create designs with great looking colors.
Fractal : Fractal is a tool to help you build and document web component libraries, and then integrate them into your projects.
Component (or pattern) libraries...
This Is Responsive : Tips, Resources and Patterns for Responsive Web Design
