960 Grid System

“The 960 Grid System is an effort to streamline web development workflow by providing commonly used dimensions, based on a width of 960 pixels. There are two variants: 12 and 16 columns, which can be used separately or in tandem.”

Twitter Bootstrap

“Sleek, intuitive, and powerful front-end framework for faster and easier web development.”

Gumby 960 Grid Responsive CSS Framework

“Gumby Framework was built to be the most maleable grid framework you’ve ever used while still maintaining the familiarity and ease-of-use of the grid you’ve always used.”

Variable Grid System – Generate CSS grid templates based on ‘960 Grid System’

“The variable grid system is a quick way to generate an underlying CSS grid for your site. The CSS generated file is based on the 960 Grid System.”