And the software isn't just rendering the forums. It also simultaneously handles email, Usenet, and IRC relays.

Also, it runs on SQLite. I found that the most surprising of all.

Web development in D is incredibly fun. I love that I can compile HTML templates into machine code (which of courses catches template errors as compiler errors), I love how fast the result is, I love that there is a very lively collection of D packages around web development. In fact, the D package manager, dub, started as a package manager for Vibe.d, the main D web framework.

There's a bit of discussion about it here: https://news.ycombinator.com/item?id=3592769

Source of the site is here: https://github.com/CyberShadow/DFeed

You can find the source on GitHub it not only runs a web server... It runs an IRC bot too and an NNTP server as well so you can download all threads and post with a newsreader / usenet client.