Tutorial básico de Java EE por Abraham Otero - Asociación javaHispano
Servlet Best Practices, Part 3 - O'Reilly Media
JavaRebel | ZeroTurnaround.com
WEB4J - Simple Java Web Application Framework - Simple and Easy
hudson: an extensible continuous integration engine
Welcome to Apache Forrest
RESTful Web Services
sq1-struts2 - Google Code
Designing Enterprise Applications with the J2EE Platform, Second Edition
The J2EE(TM) 1.4 Tutorial