Top 5 Free Html5 Responsive Frameworks
Bootstrap Frameworks is a popular, modern front-end/UI development framework. It’s feature-packed and will have most of the things you’ll need for developing responsive sites and apps.
Gumby responsive frameworks uses a flexible, customizable, 960px wide grid, a width chosen by many web designers. It also uses SASS, aka Synctactically Awesome StyleSheets, an extension of CSS3 that adds nested rules, variables, mixins, selector inheritance, and more. Finally, Gumby is perfect to create clutter-free responsive site, no unnecessary stylesheet on the tablet version of your site.
Foundation responsive framework provides you with a great, flexible grid that can easily be nested. It also focuses on mobile and lets you build sites that are mobile first, then add the stuff for other versions, making the mobile version really optimized and un-cluttered. It also works very well for rapid prototyping, making it a useful tool for more than just designing your site.
At about 300KB, HTML KickStart packs quite a punch: UI components like stylish buttons and navigation bars, scalable icons (using Font Awesome), a responsive grid layout, a touch-enabled slideshow component and so on.
Skeleton responsive frameworks is a simple and clean responsive CSS boilerplate for HTML5 websites and apps. It’s got just the things you need, and nothing more.
Some notable features: a responsive layout grid, standard media queries for your device-specific CSS style properties, a CSS class for responsive image elements that scale with the layout grid, a PSD template for mocking up your web designs, and an HTML5 shiv for old web browsers. If you want to get started with responsive design quickly, you should look into this open source project.