JWSDP (Java Web Services Developer Pack). A free bundle of goodies you can download from Sun that lets
you set up a Servlet engine on your own machine. It includes Apache Tomcat, Ant, JSF, JAXP, JAXR,
JAX-RPC, JSTL, and SAAJ. You install
it, with a few clicks, start it and it comes up running a number of examples with source code side by side. It
administers with a web browser. It is very polished.