Gumby is an powerful responsive CSS Framework, powered by SASS. You can create rapid and logical page layout and app prototypes with a flexible and responsive grid system and UI kit. Websites built today must be mobile friendly in order to survive. Why have two different sites for mobile and desktop when you can have your main site be one size fits all? With Gumby framework you can make responsive website that automatically changes to fit the device you’re reading it on.
It is built with the power of Sass. Sass is a powerful CSS preprocessor which allows us to develop Gumby itself with much more speed — and gives you new tools to quickly customize and build on top of the Gumby Framework.
Gumby is developed following the latest standards and specs. In order to stay on the cutting edge, Gumby supports modern web browsers like: Chrome, Firefox, Opera, Internet Explorer 8 – 10.
Website and Demo: http://gumbyframework.com/
Download:https://github.com/GumbyFramework/Gumby
License: MIT License
I didn’t like any of the existing frameworks out there, so I just created my own framework.
Cascade Framework ( http://cascade-framework.com/ ) combines a very light footprint with feature richness bacause of an ultra-modular OOCSS based architecture. If you only need its core features, you need no more than 2.5Kb of framework code (minified + gzipped).
If Cascade Framework still isn’t lightweight enough for you, there’s now also a light version with 2kb in total. You can check it out at http://jslegers.github.io/cascadeframeworklight/ .
Also, consider that both Cascade Framework and Cascade Framework Light provide out-of-the-box support for responsive design for all browsers that support it, while serving a fully functional desktop version to IE6-8.