mqGenie adjusts CSS media queries in browsers that include the scrollbar's width in the viewport width so they fire at the intended size

Break free from CSS vendor prefix hell!
-prefix-free lets you use only unprefixed CSS properties everywhere. It works behind the scenes, adding the current browser’s prefix to any CSS code, only when it’s needed.

Preprocessing just got easier with Prepros
Enjoy the dead simple design & development workflow

Ce site vise à vous apprendre les bases de CSS utilisées pour structurer n'importe quel site web.

Cross Browser CSS Checkbox Generator | Free Checkbox CSS

Pixate Engine for iOS:
A free dynamic user interface platform for mobile apps.

Smart, Lightweight and Portable IDE for faster and easier web development.

A set of small, responsive CSS modules that you can use in every web project.

Just include the CSS file and add "label" class and "data-label" to your code. Then start positioning.

Helium is a tool for discovering unused CSS across many pages on a web site. The tool is javascript-based and runs from the browser.

The power of styling is now in your hands. bluePen can be easily installed even on a dynamic website.

Scout is a cross-platform app that delivers the power of Sass & Compass into the hands of web designers.

Hint.css is a tooltip library written in SASS which uses only HTML/CSS to create simple tooltips.

Css framework based on widget-modifier coding style

Minify is a PHP5 app that helps you follow several of Yahoo!'s Rules for High Performance Web Sites.
It combines multiple CSS or Javascript files, removes unnecessary whitespace and comments, and serves them with gzip encoding and optimal client-side cache headers.

CSS-framework for professional developers

Holmes is stand-alone diagnostic CSS stylesheet that can highlight potentially invalid or erroneous HTML(5) markup by adding one class — Read more

KNACSS est ce que l'on appelle un "framework CSS" comme il en existe tant d'autres. Sauf que celui-ci est mieux :) (pourquoi ?) Il a été concocté avec amour par Raphaël Goetter et l'agence Alsacreations.fr au fur et à mesure de nos expériences en production, et est sous licence libre CC-BY. Son but est de servir de base commune à tous les projets d'intégration web, grâce à une nomenclature et des conventions constantes. Mais aussi de faciliter les positionnements d'éléments, de gérer les alignements, les gouttières, etc. Le tout de la façon la plus propre et accessible possible En route, et hopla !