Related: http://mediaqueri.es/

It's "a collection of responsive designs". Some great examples in there.

Also: http://www.angrycreative.se/projekt/less-framework/ Another nice media query framework, though a bit more complicated.

At first I thought "not another one," but Dave has really done some great work. Simple, lightweight, and beautiful. Not to mention he provides a great set of media queries to aid with responsive designs and a handful of basic elements (forms, buttons, and a tab system). Definitely going to employ this for "quickie" projects or documentation pages.

This is a great little project!

Somewhat related: http://html5boilerplate.com/mobile

I'm going to have to spend a bit of time comparing this to Andy Clarke's 320 and Up[1].

From what I can tell so far, the difference appears to be philosophical - desktop first vs mobile first.

[1]: http://stuffandnonsense.co.uk/projects/320andup/

This is pretty, but I really think the grid should be fluid, and not just jump between states.

Was looking to do exactly this on my own. Will try it out!

performance nitpicks:

* 3 separate requests for unminified css files

* 50 equal signs for every html and css comment (and there are a lot)