I made new release today of my Clojure-based Wiki : Cardigan Bay, with, finally, a reasonable video introduction :
You can get the release as an executable here : https://github.com/interstar/cardigan-bay/releases/tag/0.6.0 (no need to compile etc.)
Latest features include various options for embedding media from elsewhere, and embedding Clojure scripts in pages. Full text search. Export wiki as static site. And a slicker bookmarklet to bookmark sites directly into the wiki.