Thanks for asking as it bugged me lately, too. As far as I know there's no open source tool to design portlets in a GUI. I used an early access version of Sun Java Studion Creator, which is an excellent yet commercial tool. Although BEA WebLogic Workshop IDE supports developing JSR-168 portlets I couldn't figure out how to export them and deploy onto JBoss Portal. It's free so you could give it a try and obviously report your findings here ;)
I am also new to portlet design.
But I found a plugin named pluto, which support portlet design in Eclipse.
You can download it at: http://prdownloads.sourceforge.net/plutoeclipse/org.eclipsefan.pluto.ui_1.0.0.zip?download
It fits JSR168 specification.
But you must configer jBoss portal sepcific xml files such as jBoss-Portlet.xml, you can read jboss portal reference guide for reference.
I have installed the bundle package of JBOSS server and Portal server( jboss-portal-2.0-jboss-4.0.2) and deployed the helloworld portlet. It works fine.
Now I want to code my own portlet and portal.
I am using JBOSS Eclipse IDE for the development on the JBOSS application server. The JBOSS Eclipse IDE tool dosen't support portlet development so far, how can I start? Is there an IDE that support portlet development on the JBOSS platform?
Hope you are still there on this forum. have you got any solution to your problem??? I am stuck at the same problem . Wanted to send you email but couldn't see ur email id in ur profile.Please reply to firstname.lastname@example.org if you get this mail