Clone em php do wiki original. Simples e funciona.

Site Oficial
phpwiki.sourceforge.net

" A WikiWikiWeb is a web site where anyone can edit the pages through an HTML form. Linking is done automatically on the server side; all pages are stored in a database.

This may sound rather simplistic, but a Wiki is a very unique way to collaborate on the Web. I set up a few while working at the New York Times on the Web, and the technical staff really took to them in a big way. They wrote 500 pages in just a few months (all to document the internal systems).

The addictive quality of a Wiki is that making pages is as simple as making a link to them. If they don't yet exist, the page link will be followed by a hyperlinked question mark; follow that link and you can define the new page.

With this setup, you can update and create pages from anywhere there is a web browser handy. "

Demo Oficial do PhpWiki
phpwiki.sourceforge.net/phpwiki

Por favor, não faça muita bagunça... Não quero ficar limpando o site toda hora.

O site de teste está hospedado em um servidor precário... Se ficar muito tempo fora do ar, por favor escreva para weblivre@br101.org. Vc pode/deve tentar usar os cms instalados no opensourcecms.com. Lá tem muito mais opções do que aqui. :)