PeWi is a seven line PerlLanguage WikiClone from the author of WyPy, written for ShortestWikiContest.
Documentation and so on coming within a day or so: the author just spent all night learning Perl, coding the wiki, and then testing it. Quick instructions:
"{" starts a list, "@ " starts a list item, "}" closes a list. Double line break for paragraphs. Links work as normal. -- SeanPalmer
Acknowledgements: Cody "d8uv" Woodard (name), Robin Berjon ("return"), Morbus Iff (a handful of hacks), Casey West (use of CGI vars), Nicholas Clark ($^I hack), Daniel Biddle (syntax note).
Tried it, can't make it work. I started apache, installed the script in more than one place, made directories, everything I would usually do to make a cgi script work. Would you care to supply more complete instructions?