Just register any HTML element or JavaScript object as a draggable and any other HTML element or JavaScript object as a drop zone and Rico handles the rest. It provides several cinematic effects as well as some simple visual style effects in a very simple interface.

Rico 2.0 is based on Prototype JavaScript Framework and JSON libraries and it includes grids, calendar & tree controls, drag & drop, and cinematic effects. Its object-oriented framework makes it easy to add richness to your web application

Features of Rico 2.0

1. Animation Effects
2. Behaviors
3. Styling
4. Support for Drag And Drop
5. Support for Ajax

Website : http://openrico.org/
Download : http://sourceforge.net/projects/openrico/
Demo : http://demos.openrico.org/

DynarchLIB is free toolkit, distributed under a BSD-style license.

Features of DynarchLIB

1. Consistent object and event systems.
2. support for AES encryption framework.
3. Convenient extensions to the JavaScript core objects.
4. Provide Rich set of widgets: buttons, menus, calendar, tree, color picker, popups, tooltips, dialogs, layout managers, HTML editor, and more.
5. User interface is a highly customizable via.. CSS.
6. Small yet self-contained — DynarchLIB doesn’t require third party libraries.

Download: DynarchLIB
Demo: DynarchLIB toolkit demos

The framework is based on Dynamic HTML and the programming language used is Application Description Files (ADF), executed at the client’s end as JavaScript. When the web application is run, the scripts are downloaded from the server as XML|XML files and executed at the client’s end.

Features of Bindows

1. A class based, Object Oriented API
2. A complete windowing system with a wide array of supported widgets including labels, buttons, check boxes, radio buttons, text areas, menus, toolbars, status bars, tool tips, grids, trees, sliders, spinners, progress bars, gauges, image maps, live vector graphics and many more
3. Run your Java-based applications, inside a browser (pure Ajax), with a Windows look-and-feel!
4. The leading toolkit for developing zero-footprint SOA client-side applications
5. Native XML, SOAP and XML-RPC support
6. Single user to enterprise level support
7. Rich, customizable, with desktop-like GUI components
8. Run in standard browsers without any installation (zero-footprint)
9. All major server, Backend platform, Operating system, Languages and Browser are supported
10. Accessibility (Section 508) Supported
11. Bindows supports client-side charting in all supported browsers, which is both rich, scalable and dynamic (animations), that are designed to be easily extended and enhanced
12. full support for internationalization and localization.

Download: bindows Ajax Framework

It is one of the best, full-featured and fastest JavaScript OOP engine you can find over the Internet. it allow you to write your own classes, use inheritance, polymorhysm mechanisms and gives possibility of extending and reusing existing code.

Features of AJAX.OOP :

1. Allow you to inherit any JavaScript classes, even if they written not with AJAX.OOP syntax but with native JavaScript style.
2. You can easily override any parent properties and methods in a way you like.
3. Easy to call/access any parent properties or methods from anywhere in your class, even if parent elements has been overriden! Just use this.$super accessor of any class you’ve created with AJAX.OOP.
4. Agregate self and parent classes inside themselves
5. Strict instances
6. full-featured and fastest JavaScript OOP engine
7. open source Lightweight JavaScript OOP Framework

Download : ajaxoop-1.0.4-source.js

ICEfaces leverages the entire standards-based Java EE ecosystem of tools and execution environments. Rich enterprise application features are developed in pure Java, and in a pure thin-client model. There are no Applets or proprietary browser plug-ins required.

The applications are JavaServer Faces (JSF) applications, so Java EE application development skills apply directly and Java developers are isolated from doing any JavaScript related development. ICEfaces is completely open source and is provided under the Mozilla Public License.

Features of ICEfaces:

• Over 55+ rich, auto-Ajax ICEfaces components , and more with each release
• Integration with script.aculo.us JavaScript effects
• Easily theme-able via CSS
• Integration with the Tomahawk component library
• Rich User Experience
• Scalability-Ajax Clustering
• Standards-based
• Easy Ajax
• Compatibility
• Ajax Push
• Security

• Download: ICEfaces.org
• Demo: ICEfaces

Furthermore, with Update Panel, a special feature of KoolAjax is, developers can easily create a great Ajax application without knowledge about JavaScript. Using KoolAjax, you will be amazed with its power and simplicity. KoolAjax support following Database for PHP on Windows or Linux :

• MySQL
• Microsoft SQL
• Postgres SQL
• Access
• Flat file

Some highlighted features: (1) Cross-browser compatible. (2) Simple PHP interface. (3) Support simultaneous AJAX requests. (4) Many client-side utility functions. (5) Create partial page update easily with Update Panel. (6) Creating Ajax callback as easy as normal post back.

Download Url: KoolAjax

Ample SDK completely written in JavaScript and thus it does not require any specific components installed in your browser to operate properly.It doesn’t modify the browser infrastructure but rather fills in the missing functionality. Ample SDK Runtime is fully functional in all modern web browsers. When running it fills in functionality missing from the browser, giving web developers a standards-based API that allows them to stop worrying about browser quirks and start efficiently writing cross-browser application code.

The architecture of Ample SDK is very flexible and extensible. You can easily extend Ample SDK or adjust it to the needs of your application by, for example, prototyping DOM core objects, creating new UI managers, creating custom UI components or even entire languages, thanks to its Componentization Model. Ample SDK is distributed using a dual-licensing approach under MIT and GPL licenses.

Download: Ample SDK

The component suite of OpenFaces includes both visual and auxiliary non-visual components that give you more control over your Web application usability. Here is a complete list of JSF components which Openfaces offer: Calendar, Chart, Confirmation, Data Table, Date Chooser, Dynamic Image, Folding Panel, Graphic Text, Hint Label, Popup Layer, Suggestion Field, Tab Set, Tabbed Pane, Tree Table, Two List Selection, Utility Components (Focus, Scroll Position, Load Bundle).

The OpenFaces validation framework provides full and explicit support for client-side validation lacking in JSF framework. It use server-side validation logic of standard JSF validators to the client side and provides additional validators and messages allowing you to validate a broader range of data with minimum server roundtrips. You can easily customize what, when, and where to validate in a fine-grained way, fulfilling the most specific needs of your application and enhancing user experience.

Features of Openfaces:

1. Advanced Ajax-powered JSF components
2. Easy to use Ajax framework
3. Client-side validation framework with custom validators
4. Rich and flexible CSS-based styling
5. Enhanced end-user experience
6. Open-source project

Visit: OpenFaces

It makes it easy to call ASP, ColdFusion, Io, Lua, PHP, Perl, Python, or Ruby functions from your WebPages via JavaScript without performing a browser refresh. The toolkit does 99% of the work for you so you have no excuse to not use it.

It supports for IE5+, Pocket IE, Opera 8+ (including mobile), Opera mini 4+, Safari 1.2+, Mozilla 0.94+ and Konquer.

Here are two overly simplistic examples of Sajax Toolkit:

1. Graffiti Wall: → Try it or see source
2. Calculator: → Try it or see source

Download : Sajax

While virtually any web application can be built with ThinWire, when it comes to enterprise applications, the framework excels with its highly interactive and rich user interface components.

Use ThinWire to handle the view-layer of your Java EE (J2EE) application and you’ll be able to provide an unparalleled user experience, while at the same time completing your project faster than ever. ThinWire is compatible with all major Ajax browsers.