https://boris.kourtoukov.com/
Rolled my own static site generator in Clojure and have been updating it over the past four years. Its full of overly specific automations that make updating easier for me. One of the goals was to not use javascript, in order to make it extremely archivable, while still having a look that is interesting to me.
The only reason it is not open source is that most features are only related to me. I have some mini 'easter eggs' in there, and more to hopefully come. As well as some generative content that changes each time I make an update. I would call the codebase 'rustic' :)