PUBLIC MARKS from Regis with tags "open source" & framework

With proper mark-up/logic separation, a POJO data model, and a refreshing lack of XML, Apache Wicket makes developing web-apps simple and enjoyable again. Swap the boilerplate, complex debugging and brittle code for powerful, reusable components written with plain Java and HTML.

Java to JavaScript Compiler & J2S SWT Library. Java-to-JavaScript compiler, provide general java.lang.* and java.util.*, and an extra UI widget library. This is very similar to Google Web Toolkit, except that GWT requires to use specific widgets wheras J2S uses standard SWT widgets. And J2S as an Eclipse License.

Java Open Source workflow engine based on XPDL

The ActiveBPEL engine is an Open Source implementation of a BPEL engine, written in Java. It reads BPEL process definitions (and other inputs such as WSDL files) and creates representations of BPEL processes. When an incoming message triggers a start activity, the engine creates a new process instance and starts it running.