GWT widgets

http://stackoverflow.com/questions/867451/best-gwt-widget-library

http://code.google.com/p/gwt-platform/

Busqueda (Solr, Lucene y otros)

http://java.dzone.com/articles/apache-solr-get-started-get

http://sna-projects.com/bobo/
http://sna-projects.com/zoie/

Herramientas de test

Interfaz de usuario

http://seleniumhq.org/

Test de carga

http://grinder.sourceforge.net/

Manipilacion de clases (Classloaders)

http://www.jboss.org/javassist

http://jakarta.apache.org/bcel/

http://cglib.sourceforge.net/

http://www.csg.is.titech.ac.jp/openjava/

http://www.java-opensource.com/open-source/aspect-oriented-frameworks.html

http://www.java-opensource.com/open-source/bytecode-libraries.html

BPM

OSWorkflow

jBPM

Activiti
http://processdevelopments.blogspot.com/

Trucos Liferay

Listing Article fragments dynamically using Liferay's WCM Templates


Propiedad: "required-deployment-contexts"
http://www.liferay.com/community/forums/-/message_boards/message/6019395/maximized
http://www.liferay.com/web/thiago.moreira/blog/-/blogs/2349199/maximized
http://www.liferay.com/community/forums/-/message_boards/message/6229074;jsessionid=F451D73E12E12475067C590E5537221F.node-1
http://www.liferay.com/community/forums/-/message_boards/message/6224992

<Context>
<Loader
loaderClass="com.liferay.support.tomcat.loader.PortalClassLoader"
/>
</Context>

Librerías de patrones de interacción

http://welie.com/

Designing Interfaces

UI patterns

Interaction Design patterns for games

Mobile User Interface Design Patterns

Yahoo! Design Pattern Library

Designing Social Interfaces