Sharingbuttons.io : Super fast and easy Social Media Sharing Buttons. No JavaScript. No tracking.
Compass : Compass is an open-source CSS Authoring Framework.
Selectivizr : CSS3 pseudo-class and attribute selectors for IE 6-8
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 ...
Cufón : Cufón aims to become a worthy alternative to sIFR, which despite its merits still remains painfully tricky to set up and use.
