Free UI and CSS Frameworks for Web

Pintsize works on top of the Halfpint responsive Sass grid system, allowing developers to build websites that work properly on both mobile and classic desktop environments. Pintsize uses Bower, NPM, and Gulp to generate a standard HTML, JS, & CSS project...

Materialize closely follows instructions laid out via the Material Design documentation and provides a simple frontend UI framework for building such projects. The framework comes with built-in support for responsive layouts and mobile devices, allowing...

Decorator is an all-encompassing tool for creating websites that render properly on both desktop and mobile devices.It comes with lots of UI components and page layouts out of the box, ready to be deployed in live projects and provide a starting point for...

KNACSS uses only CSS code to create responsive grid systems that automatically adjust the content's position depending on the available viewport space. KNACSS is perfect for creating sites or pages that need to render on both mobile and desktop...

normalize.css works similarly to a CSS reset utility, but more accurately. While CSS reset files take all page elements and reset all their defaults to 0, normalize.css targets only specific elements that need a reset, elements known to cause display...

Primer is not a complete CSS framework since it only includes the basic styles and components used on the GitHub.com website. This means you'll probably miss widgets like date or color pickers, but if you want an introspective on how Silicon...

Unit Grid System (UnitGS) is a grid system for splitting up the content on your page on different columns, and make them adapt to the user's viewport size, properly showing it without going off-screen.The grid system is written in SCSS, a CSS superset,...

Moqui was created with the purpose of simplifying the task of putting a user interface together. While there are many UI frameworks around, most of them are written in JavaScript, CSS, and HTML, and require lots of code adaption to work together with...

cSans includes all the tools needed for a modern CSS framework, including a CSS reset, minimal styles and cross-browser support (or at least for those who support CSS 3 and HTML 5).A sample page is included with cSans, showcasing all its default styles...

Base can be used when needing a cross-browser friendly layout that renders the same on a multitude of browsers and can be viewed on mobile devices as well. Base comes with a set of default styles and a demo page for using it out of the box, but also...