Here is a list of known Python-based WikiEngines

• Hatta -- a Wiki which runs out of a Mercurial repository whose pages are just the files in that repository

• Markdoc -- a lightweight Markdown-based Wiki system, public domain

• MoinMoin -- an evolution over PikiPiki that you're using now - multiple ways to run, plugin-based architecture with lots of plugins and large community, GPL

• MonkeyWiki -- another PikiPiki fork that claims to be simple to install/use, single file, very flexible templating, rewrite-friendly

• Pwyky -- WyPy's big brother, by the same author.

• http://homepages.kcbbs.gen.nz/tonyg/projects/pyle.html -- GPL wiki with multiple VCS backends, email notifications, edit by FTP and lot of other features

• sahriswiki -- Mercurial backend support, plugins, MIT licensed.

• Smug - GPLed content editing system with moderation queue.

• Sphene Community Tools -- Django based wiki and forum applications.

• Sycamore -- seems to have roots in MoinMoin, but looks a little slicker while not as full featured. Uses a Postgesql or MySQL backend. GPL

• Trac -- an enhanced wiki, issue tracking and source code browser system. Supports multiple markup formats including MoinMoin, ReStructuredText, html, and textile. Runs as FastCGI, WSGI or standalone. Pluggable architecture with focus on simplicity.

• WyPy -- a ShortestWikiContest contender, 23-, 18-, and 11-line versions.

• zim-wiki at http://www.zim-wiki.org -- WYSIWIG personal/desktop wiki with index, links, image inclusion, checkboxes and bulleted lists, equations, graphviz; calendar, ToDo; prints to clean html. Customizable, all-python over gtk2, inbuilt-server, uses filesystem as db; debian packaged. Documentation. Actively developed 2012.

• ZwiKi -- based in ZoPe, powerful, GPL.

Archaeology (dead, missing and outdated)

• CyberPublishing -- a wiki-based web publishing framework written in Python; GPL

• Luminotes -- a WYSIWYG personal wiki notebook for organizing your notes and ideas. Not currently developed.

• mojibake -- based on Sakana, runs with ModPython

• Not-Yet-Named Wiki -- runs on Webware. Supports static publishing, WYSIWYG editing, ReStructuredText

• http://moinmo.in/PikiePikie -- Python-based, lets you put a WebLog on any page (based on PikiPiki)

• PikiPiki -- Python-based, completely standalone, GPL, famous ancestor of most Python wikies