Bootstrap

Bootstrap is a open-source collection of tools for creating browser sites and applications.

Free Open Source Self-Hosted JavaScript HTML5 Boilerplate

Semantic UI

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

Free Open Source Web

UIKit

A lightweight and modular front-end framework for developing fast and powerful web interfaces. ui framework full HTML / CSS, javascript component , form, theme , dropdown , responsive ... More full than bootstrap or foundation

Free Open Source Web

Materialize

Materialize is a modern responsive CSS framework based on Material Design by Google

Free Open Source Web

HTML5 Boilerplate

A rock-solid default for HTML5 awesome. HTML5 Boilerplate is the professional badass's base HTML/CSS/JS template for a fast, robust and future-proof site.

Free Open Source Web

Purecss

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

Free Open Source Web

Slides Framework

Slides is a simple and powerful HTML and CSS framework that lets you easily build beautiful static websites thanks to a flexible modular setup.

Commercial Self-Hosted

GroundworkCSS

GroundworkCSS is a 100% free and open source responsive HTML5, CSS and JavaScript Framework.

Free Open Source Web Self-Hosted

Spectre.css

Lightweight, responsive and modern CSS framework for faster and extensible development.

Free Open Source Web Self-Hosted

Material Design Lite

Google's front-end web framework for building sites to the Material Design specification.

Free Open Source Web GitHub

Topcoat

Topcoat is a brand new open source CSS library designed to help developers build web apps with an emphasis on speed. It evolved from the Adobe design language developed...

Free Open Source Mac OS X Windows Linux Web

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...

Free Open Source Mac OS X Windows Linux BSD Web

Element UI

Element, a Vue 2.0 based component library for developers, designers and product managers.

Free Open Source Web Self-Hosted JavaScript Vue.js CSS

Kube Web Framework

Kube is one of the world's most advanced and flexible frameworks. Kube helps you spend less time on routine tasks and more time creating amazing products. Focus on...

Free Open Source Web

Sassy-validation

Sassy-validation is a Sass data type validation library. Validate inputted data or don’t Sass at all ! Sassy-validation is a handy addition for every Sass project...

Free Open Source Mac OS X Windows Linux Android Web

Fluid 960 Grid System

The Fluid 960 Grid System templates have been built upon the work of Nathan Smith and his 960 Grid System using effects from the MooTools and jQuery JavaScript...

Free Open Source Mac OS X Windows Linux BSD Web

Foldy960

Foldy960 - A responsive version of the 960 grid, the Pvel way!

Free Open Source Mac OS X Windows Linux BSD Web

Unsemantic CSS Framework

Unsemantic is a fluid grid system that is the successor to the 960 Grid System. It works in a similar way, but instead of being a set number of columns, it's...

Free Open Source Mac OS X Windows Linux BSD Web

Microsoft Web Framework

MWF is a system that allows site authors to consider how best to tell the story of Microsoft products and services with confidence that the modular pieces will support...

Free Open Source Self-Hosted