Following is a quote from the above url
"One of the most exciting kinds of e-mail that the Swing/JFC team receive is a product announcement for a new JavaTM application that features a Swing GUI. A close runner-up is the URL for a new game or a compelling never-before-seen applet.
Over the years we've collected many links to this information. In fact, if you walked down the hallways here you would see the walls plastered with hundreds of screenshots from applications developed outside of Sun. Therefore, we have decided to launch a Swing Connection feature to share this bounty. Don't expect a comprehensive survey; these are applications that we bumped into or that found us."