[cced to OpenGuides and CGI::Wiki dev lists - Matt, please feel free to join either or both of these. URLs at bottom of mail.]
Hi Matt,
Paul Mison pointed me at your post about wikis: http://a.wholelottanothing.org/archives.blah/007391
Sounds like you might be interested in some stuff I've been writing.
CGI::Wiki is a perl distribution (available on CPAN) that provides a backend for wikis and wiki-like applications. Despite the name, it does no CGI whatsoever - it just stores, indexes and retrieves content and metadata.