Great OpenSource RCP application and Plug-in

Eclipse open source RCP application page:
http://www.eclipse.org/community/rcpos.php

PSICAT:
http://portal.chronos.org/psicat-site/index.html

Eclipse Trader:
http://eclipsetrader.sourceforge.net/

RSSOwl:
http://www.rssowl.org/

JLibrary:
http://jlibrary.sourceforge.net/

ZDT:
http://zdt.sourceforge.net/

ZipTie:
http://www.ziptie.org/