IT Mill Toolkit is a server-side RIA (Rich Internet Application) library that provides a versatile set of AJAX widgets for Java programmers. Applications are programmed in Java and executed server-side. At the client-side (i.e. in the browser), enhanced GWT widgets are used for presentation.
The Widget Jones Library is a lightweight, flexible, template-driven widget build system. It is intended to simplify creating portable widgets. Write your code once, build it with WJL, then run it on several widget platforms like Apple Dashboard, Windows Vista Sidebar, iGoogle, and more.