The ultimate CSS tools for web designers | CSSmatic
Gradient generator, border radius, noise and box shadow
geuis/helium-css · GitHub
Helium is a tool for discovering unused CSS across many pages on a web site
Typeplate » A typographic starter kit encouraging great type on the Web
A neat typographic starter kit
Humans TXT: We Are People, Not Machines.
We Are People, Not Machines
WebPagetest - Website Performance and Optimization Test
ProtoFluid - HTML5 and CSS3 Web App Prototyping
Test your @media queries and web app on various screen sizes