UrlRewriter.NET is an open-source, light-weight, highly configurable URL rewriting component for ASP.NET 1.1-2.0 and Java. It provides similar IIS Rewrite capabilities that the Apache web server provides with mod_rewrite and .htaccess.
BuilditONCE is a Java-based component framework that
enables the development of Electronic Service Delivery (ESD)
and e-business solutions by enterprises and governments.
Compote is a plugable, component-based engine, written in Java, that uses Struts, Hibernate and JSP/Velocity as underlying technologies. In it's context plugins are struts-modules (news, forum), that can be easy deployed and embedded into compote-engine
J2EE Polls component using the Struts framework and the Spring Framework. It is easy to install and easy to integrate with existing applications. The goal is to illustrates some of Struts\' and Spring's potential with a simple real-life example.