ZK is an open-source Ajax Web framework that enables rich UI for Web applications with no JavaScript and little programming. With event-driven feature-rich components, developing becomes as simple as programming desktops. With a markup language, designing becomes as simple as authoring HTML. With the new version 1.2.0 RC2, ZK is getting simpler and richer. 26 new features , macro components - developing new components without programming , more components , and 22 bugs are fixed. The new announced in the release notes :

* Macro components are supported; developing new components without programming.
* Developers are allowed to define new components in a page.
* Two new components: imagemap and area.
* The custom-attributes element is added to simplify the assignment of custom attributes.
* The regular expression constraints are supported.
* Components could be created in any thread, not limited event listeners.
* ZK Update Engine is optimized for pages with a lot of components.
* ZK is configurable by use of /WEB-INF/zk.xml.
* More configuration options are supported.

Download ZK 1.2.0 RC2