The UML Editor written by Steffen Müller now also has a super swiki project.
See http://209.143.91.36/super.164
To view the application in Squeak open a new 3.0 image, click on "Find" in the project navigator morph (at the bottom of the screen) and select the project "UML Editor.001.pr" from Bobs Super Swiki. Right click and select "load as project".
Have fun,
Steffen and Torsten