nukeevangelist writes:  

A powerful module for phpnuke!

Hydronuke Project: Guiki is a Wiki module for PHPNuke. You can see it in action in the User Docs section of the site.

Features
* Auto-link generation
* Stores pages in database
* Graphical editing of site
* Basic search engine
* Delete pages in edit mode
* Simple code
* Easy to install
* Modification time records
* Extensive docs as part of the wiki.
* Build-in editor
* Easy to install
* Simple to use.
* Index page function