Open source servlets
Jive builds enterprise-class online community and collaboration software to boost social productivity.
http://www.coolservlets.com/
Apache-Tomcat
Apache-Tomcat
http://jakarta.apache.org/tomcat/
Servlet Source
Servletsource.com
http://www.servletsource.com/
Servlet.com
Servlet.com
http://www.servlet.com
Specificatie
The java servlet api is a standard extension to the java platform that provides web application developers with a simple consistent mechanism for extending the functionality of a web server.
http://java.sun.com/products/servlet/
The ServletForum
The ServletForum
http://forum.java.sun.com/forum.jspa?forumid=33