If you find a good resource on JSR 168 portlets on the web, please include a link here.

• PortletSwap.com Maintained by JBoss, features JBoss Portal portlets and layouts.

• Java.net Portlet Community Although a bit disappointing, some of the resources are pretty darned good.

• Project PortletMVC Home Development of JSR 168 compliant portlets based on MVC pattern

• MVC WebWork Portlet Framework MVC Framework for JSR168 Portlet based on WebWork,Velocity, Spring, Hibernate.

• Project portletUnit jUnit Java Unit Testing Framework for testing JSR-168 portlets

• Spring PortletMVC provides a complete MVC layer for the JSR-168 Portlet API in the same way that Spring WebMVC does for the Servlet API.

• Caucho JSR 168 Tutorials A variety of Portlet tutorials

• Osmond's Portlet Utilities IPC and some portlets that should assist in testing

• Article - Developing to the Java Portlet Specification Article describes coding a QueryPortlet that displays the contents of a database query.

• Project Kosmos Open source JSR-168 portlets for software project monitoring