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

jQuery UI

jQuery UI is an open source library of interface components — interactions, full-featured widgets, and animation effects — based on the stellar jQuery javascript library .

Free Open Source Web

React

A JavaScript library for building user interfaces.

Free Open Source Mac OS X Windows Linux Web

w2ui

W2UI is a small JavaScript UI library with a complete set of widgets: layout, grid, sidebar, toolbar, tabs, fields, popup, utilities.

Free Open Source Mac OS X Windows Linux

Purecss

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

Free Open Source Web

Kendo UI

Kendo UI is JQuery-based framework for rich UI, build HTML5 apps that look native on any device, build desktop and mobile applications for any browser.

Freemium Mac OS X Windows Linux Web

GroundworkCSS

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

Free Open Source Web Self-Hosted

alloyui

AlloyUI is a framework built on top of YUI3 (JavaScript) that uses Bootstrap (HTML/CSS) to provide a simple API for building high scalable applications.

Free Open Source Web JavaScript

JQWidgets

Unique toolkit for HTML5 Web development jQWidgets gives us something new and special. It’s a new and unique library for Web development and unlike others it makes...

Free Personal Web

jKit

A very easy to use, cross platform, jQuery based UI toolkit, that's still small in size, has the features you need, and doesn't get in your way of doing things !...

Free Web jQuery

RiotJS

Simple and elegant component-based UI library. Custom tags, enjoyable syntax, elegant API, tiny size (~10KB).

Free Open Source Web

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

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

Ninja UI

Ninja User Interface, the jQuery plugin for lethal interaction.

Free Open Source Web