The visual frame designer in action Syntax highlighting source code editor (Scintilla)
Here is the source generated for the above screenshot.

This is an example of Cyclops output (Tim Peters' cycle finder adapted to generate an HTML report) Note that some links won't work in a browser as they describe links to Boa source.

File explorer with Python/CVS/Zope facilities
Application view
Class browser for a module Class inheritance view
Simple UML view (dated)
Import relationships of all modules in an application
The import structure for IDLE. Very pretty :)
Browse a Zope site Edit Zope Documents and methods just like normal source
Old screenshot from the time of Pygasm Documentation view
An example of the generated HTML.