1. IT Mill Toolkit
2. LivePipe UI
3. Iwebkit iPhone/iPod touch framework
Iwebkit is the revolutionnairy kit used to create high quality iPhone and iPod touch websites in a few minutes. In the first 4 months of it’s existance the pack has greatly evolved from a basic idea to a project that has reached worldwide fame!
6. Echo Web Framework
Echo is an open-source framework for developing rich web applications. From the developer’s perspective, Echo behaves as a user interface toolkit–like Swing or Eclipse SWT. AJAX technology is employed to deliver a user experience to web clients that approaches that of desktop-based applications.
7. The Yahoo! User Interface Library (YUI)
8. Sigma Ajax UI builder
9. WUI Web UI Framework
WUI (Web User Interface) is an MVC framework for writing web UIs in a single language: Java. Write web apps with components, widgets & events, not JSPs. Runs in any servlet 2.3 container. Similar to Model 2 / Struts, only better. Apache-style license.
10. Butterfly Web UI
Butterfly Web UI is a component oriented web framework for Java, like Wicket or Tapestry. The main advantage compared to these frameworks is that Butterfly Web UI integrates naturally with Butterfly DI Container, giving you a state-of-the-art dependency injection container to help you structure and decouple the internal components of your web applications.
11 Yahoo YUI library