Apache projects using Wicket
Apache Isis is a full-stack framework for rapidly developing domain driven apps and RESTful APIs in Java. It uses Apache Wicket 6.x as a default viewer for Isis domain model.
Apache Openmeetings provides video conferencing, instant messaging, white board, collaborative document editing and other groupware tools using API functions of the Red5 Streaming Server for Remoting and Streaming. It uses Apache Wicket for its web interfaces.
Apache Syncope is an Open Source system for managing digital identities in enterprise environments. It uses Apache Wicket for its web management console.
Apache Nutch is a well matured, production ready web crawler. Since version 2.3 it uses Apache Wicket for its web management console.