Https://simplemachines.org/ This looks nice. Doesn't look like it has tags/flair though. Lots of questions in regards to how it compares to the other options. Source: about 1 year ago

I've always been a fan of SMF. Install is pretty straight forward. Source: over 1 year ago

This project, called YaBB — Yet another Bulletin Board (I’ve always been good at naming things) — is pretty much dead. A few months ago the website was still up, but it appears to be down now. Yes, the project was forked into YaBB SE (a direct PHP port), and ultimately evolved into Simple Machines Forum, which still seems to be under development today (and powers Bitcoin Talk — if you’re still into the crypto thing). - Source: dev.to / over 1 year ago

Is it possible to integrate forums like Simple Machines Forum in an app or any other forum? Or is there any package/plugin that makes it easier to develop it and integrate it with firebase/firestore. Source: over 2 years ago

LMAO, this is the most debateart.com shit I've seen in a LONG time. Source: 11 months ago

While it still is far from perfect, if you want more structured debates then debateart.com is a good option from what I can tell. It seems to be a clone of debate.org with a bunch of people that used to be members there but have moved since the site started to collapse (due to bugs, poor moderation, etc.). Source: about 3 years ago