Is this the reason why Apple does not provide Java 6 for Mac OS X Leopard? A Java 6 open source port is coming! Until now, I did not have time to try it. The description on the website says that the UI components are for use with X11. On the Mac, X11 is available but less cool than the Aqua UI. If I had to write a Java-based client-side UI with this toolkit, I’d try to omit Swing and X11 and use cocoa-based SWT from Eclipse, instead. Maybe, on a long winter evening…