I just started on an old-school forum software. Go + Sqlite. Good old server-side HTML templating.
Why? I don’t like Discourse and Flarum that much. I want an even simpler solution with fewer bells and whistles.
But I guess the market is dead anyways for forums. I might replace my phpBB instance that has been running for 15 years.
I imagine this is really fun to make.
I can't remember a time where it's felt more fun to decide "I'm just going to make this web thing the way we used to make web things."