ZK is an open-source Java framework for building modern web and mobile applications.
It enables developers to create rich, interactive UIs using only Java — no JavaScript required. With 200+ Ajax-powered components, event-driven architecture, and support for popular technologies like Spring, Java EE, and JSP/JSF, ZK makes it simple to deliver powerful and user-friendly web applications.
An OpenSource Javascript Spreadsheet project based on Qooxdoo javascript framework. This component is also a part of X4View Java Framework (see www.reasonsphere.com)
ThinWire is an Ajax RIA framework for building zero footprint Ajax browser applications that feel like desktop GUI applications. Program Ajax on the server, using an event driven GUI model that reconnects program logic. All Major Ajax Browsers Supported!
jspWidgets is UI framework which allows you to build WEB based (window system) business applications using JSP, JSTL, HTML and Javascript. This framework is alternative for JSF. Contains MVC, converters, security interfaces, debugger, etc...
Swixat is a Swing-based authoring tool for the quick and easy development of graphical UI Java applications. It extends an external XUL library (SwiXml) to implement a complete MVC framework, and provides advanced scripting features.
Avian Freeware Suite (AFS) provides two things: Developers with libraries for Java Swing Widgets, XML handling, Fortran95 and Pascal; End users (Medical students, doctors, scientists) with productivity tools they can use (quizzes, XML databasing & PDF)
The Floranta libraries provide components for building Rich Client Wikis using AJAX or Java. Floranta clients can be embedded in any webpage (even plain html) and allow users to leave notes, images, cards, etc on the pages. Eg: http://www.floranta.com
A java toolkit for creating highly interactive cross browser web servlet applications. Knowledge of JSP, JavaScript, DOM, and HTML is not required because the library dynamically generates and controls client browser specific dhtml-ajax pages.
JS-OWL is an AJAX enabled Object-orientated Widget Library for pure Web Application development providing a comprehensive set of JavaScript UI components on which to build a rich user interface.
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