@hmmueller - I wasn't so much thinking of wiki software for its collaborative nature but more for the way it structures the articles. You get a lot of nice stuff on WikiMedia, such as table of contents generation, easy links to other articles, and a robust search engine. No one is saying you need to actually have more than one user, and you certainly don't need to make the front page as complicated as Wikipedia.
But if you have a vision for how to make it work on some other platform, please don't let me stand in your way. I bow down to anyone actually willing to write documentation, as it's the thing I like least about the IT world!