I've previously tried to use ikiwiki do project management and issue tracking. I consistantly failed at using it with none technical people. So I'm revisiting it for using it for documentation. I've successfully use it for my own things for documentation, but the trick is to make it accessible for people who don't know it too well to do documentation.

Using the stock blog/software template with tagging I've setup a wiki that we're using for documenation. I guess the nice thing is when I am done I can dump the output as static html for archiving. Another big win for using ikiwiki for documentation is the ability to fork and work offline.