Before deciding between Swing and SWT or Eclipse RCP and Netbeans RCP I'm often asked for some samples for Swing apps.
There are already some impressive applications like: aerith and looking glass (it is almost swing :-)) but they are not "mainstream".
At the Sun's destop site a long list of different Swing applications is available. The application Jake2 is neither Swing, nor mainstream but very interesting :-).
Web Apps, SPA, PWA with vanilla Java Script (ES 6+), CSS 3 and WebStandards only. As simple as possible, but not simpler. See you at: (Progressive) Web apps, Single Page Apps and WebStandards airhacks workshops at MUC airport, Winter Edition
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