Projects

GTK+

GTK+ is a multi-platform toolkit for creating graphical user interfaces. Offering a complete set of widgets, GTK+ is suitable for projects ranging from small one-off projects to complete application suites. GTK+ has been designed from the ground up to support a range of languages, not only C/C++. ... [More] Using GTK+ from languages such as Perl and Python (especially in combination with the Glade GUI builder) provides an effective method of rapid application development. [Less]

KDElibs (KDE)

claimed by KDE

The KDE libraries, basis of KDE and used by many open source projects. They are based on Qt, Trolltech's cross-platform toolkit, and run on Linux, BSDs, and other Unices, as well as Microsoft Windows and Mac OS X. Licensed under GNU LGPL, they may be used by open source and proprietary applications.

Dojo Toolkit

The Dojo Toolkit is a modular JavaScript toolkit that makes building richer web UI's much easier. Dojo builds on a fast, lightweight base that provides a competitive set of features (DOM traversal, AJAX, animations, event handling) at the same size as many of the alternative ... [More] "lightweight" toolkits. On top of that base Dojo provides easy access to an extensive collection of optional modules, including a widget framework that focuses on accessibility and internationalization, 2D and 3D charting and vector graphics, advanced math functions, offline capabilities, cryptography, and much much more. It also comes with a build system that collects and minifies your files into layers that you can include in your page as needed to simplify deployment and improve performance. [Less]

wxWidgets

wxWidgets lets developers create applications for Win32, Mac OS X, GTK+, X11, Motif, WinCE, and more using one codebase. It can be used from languages such as C++, Python, Perl, and C#/.NET. Unlike other cross-platform toolkits, wxWidgets applications look and feel native. This is because wxWidgets ... [More] uses the platform's own native controls rather than emulating them. [Less]

YUI

claimed by Yahoo! Inc.

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

Facelets

A JavaServer Faces specific view-technology that combines the ease of Tapestry-like components with the familiar syntax of JSP within valid XML-syntax and EL use. Incorporating custom UIComponents is extremely easy, including being able to define Component trees in other files. Additional features ... [More] include a high performance templating framework that makes composing JSF pages extremely simple. [Less]

RichFaces

RichFaces is a rich component library for JSF and an advanced framework for easily integrating AJAX capabilities into business application development. The RichFaces components come ready to use out-of-the-box, so developers can immediately save time in taking advantage of component features to ... [More] create Web applications that provide greatly improved user experience more reliably and more quickly. RichFaces also includes strong support for the skinnability of JSF applications. RichFaces also takes full advantage of the benefits of the JSF framework including lifecycle, validation, and conversion facilities, along with the management of static and dynamic resources. [Less]

Apache MyFaces

claimed by Apache Software Foundation

MyFaces is the first free implementation of the JavaServerFaces specification (aka JSF). See http://java.sun.com/j2ee/javaserverfaces for more information.

Crazy Eddie's GUI System

A free library providing windowing and widgets for graphics APIs / engines where such functionality is not natively available, or severely lacking. The library is object orientated, written in C++, and targeted at games developers who should be spending their time creating great games, not building GUI sub-systems!

qooxdoo

qooxdoo is a universal JavaScript framework that enables you to create applications for a wide range of platforms. With its object-oriented programming model you build rich, interactive applications (RIAs), native-like apps for mobile devices, light-weight traditional web applications or even ... [More] applications to run outside the browser. You leverage its integrated tool chain to develop and deploy applications of any scale, while taking advantage of modern web technologies like HTML5 and CSS3, its comprehensive feature set and a state-of-the-art GUI toolkit. qooxdoo is open source under liberal licenses, led by the world's largest web host 1&1, with a vibrant community. [Less]