Email Standards Project : The Email Standards Project is about working with email client developers and the design community to improve web standards support and accessibility ...
Fontdeck : Fontdeck is standards compliant, accessible and uses a pure CSS @font-face solution. No JavaScript required.
CSSdoc : This is a draft to bring automatic documentation to CSS files, like its known for JavaScript and PHP files through JavaDoc/DocTags.
idiomatic-css : Principles of writing consistent, idiomatic CSS
