30+ Twitter Bootstrap Alternatives - HTML5, CSS3 responsive framework

Foundation by ZURB is the most advanced responsive front-end framework in the world.

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

Awesome, solid, responsive and complete front-end prototyping framework for web-developers

Four features Columns, gutters, a baseline and a script. Folding columns Golden Grid System (GGS) splits the screen into 18 even columns. The leftmost and rightmost columns are used as the outer margins of the grid, which leaves 16 columns for use in design.

Ink is a set of tools for quick development of web interfaces. It offers a fluid and responsive grid, common interface elements, interactive components, a design-first approach with ease of use and simplicity at its core. Start integrating Ink in your projects and remove the hassle of building the basics, staying free to focus on what's important.

HTML KickStart is a ultra–lean set of HTML5, CSS, and jQuery (javascript) files, layouts, and elements designed to give you a headstart and save you a lot of hours on your next web project.

HTML5 Boilerplate is a professional front-end template for building fast, robust, and adaptable web apps or sites. Spend more time developing and less time reinventing the wheel.

Neat is a semantic grid framework built on top of Sass and Bourbon. It is simple enough to get you up and running in minutes, and powerful enough to handle any responsive layout you can dream of.

Maxmertkit is a css-framework based on widget-modifier codint style.

Css framework based
on widget-modifier coding style

Twitter's Bootstrap with themes, apps, and other enhancements

Extend Your Site.
Kickstrap makes your site purr with
Apps, Themes, and Extras

The official homepage for Blueprint, the original CSS framework. Also known as Blueprint CSS.

Dig responsive design? Hate fluid grids? Try a Frameless grid.

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

Semantic empowers designers and developers by creating a shared vocabulary for UI.

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Professional Frontend framework that makes building websites easier than ever.

Ui-Kit is a lightweight and modular front-end framework
for developing fast and powerful web interfaces.
it brings a lot of jquery ui-prefixed component kit and more relative to bootstrap tweeter.
It is easily customizable, very cosmetically, you can choose rounded edge or cubic. Includes class to insert effects on your items more quickly and easily.
the list of components integrated:
- Design Flat, default or gradient to the choice, easy to custom and border radius also.
- Dropdown hover or click
- Evolutionary modalbox
- tab
- accordion
- datepicker
- Checkbox and radio customized
- Select multi
- Responsive Grid etc ...
A verfy good alternative to bootstrap and long time existing.

Bootflat's components are built with HTML5 and CSS3. The pages use header, nav and section to build the layout. Bootflat also comes with several splendid color schemes built-in, and allows for easy customization.

Shark Audio products supports all the latest multimedia connectivity i.e ability to run usb, sd card, headphone jack, super simple bluetooth and radio that gets you more stations all the above features makes our audio product line up an very exceting buy. Shark SHKC7800 1400 watt 4.1 ch motorcycle boat audio system w/...

Workless - A classy HTML5, CSS3 framework

Bedrock is a lightweight web development framework for building websites with WordPress.

Skeleton: Beautiful Boilerplate for Responsive, Mobile-Friendly Development

YUI is a free, open source JavaScript and CSS library for building richly interactive web applications.

Ext JS 4 is a pure JavaScript application framework that works everywhere from IE6 to Chrome 11. It enables you to create the best cross-platform applications using nothing but a browser, and has a phenomenal API.

This is the biggest upgrade we've ever made to Ext JS and we think you're going to love it.

HTML5 Boilerplate, on steroids