I'm being completely serious, but what is the current fav open source forum software these days? I'd love to host a forum for a small community I'm involved in. Not a stranger to hosting other things across a variety of stacks, so I'm not particular about technology used.
Every single forum I see now is using this:
https://github.com/discourse/discourse
Seems to work okay in general. I'm not a big fan of the gamified notification system it seems to have - whenever I sign up for an instance, it'll send me things like "Super reader achievement unlocked! You read 10 threads." or whatever. I suppose it can be turned off since it's OSS.