MaintainableCSS : Write CSS without worrying that overzealous, pre-existing styles will cause problems. MaintainableCSS is an approach to writing modular, scalable and ...
HyperTerm : A terminal built on web technologies : JS / HTML / CSS
Sizzy : A tool for developing responsive websites crazy-fast.
Open sourced : https://github.com/kitze/sizzy
lit : a ridiculously small responsive css framework