I installed CGI::Kwiki today. Kwiki rocks!
There are lots of wiki flavours around, all with different features. I wanted one that was simple to install and easy to tinker with. Kwiki was trivial to install, and it’s designed to be easily reconfigured and extended. Also, it happened to use my preferred set of wiki formatting rules.
I liked it so much that I wrote a MovableType Kwiki formatting plugin to use it. If you can read this, it works!
Ironically, wiki words in MT::Kwiki version 0.01 don’t link to anything. The next version will allow you to configure your target wiki.