I recently discovered NodeBB while looking for Discourse alternatives, and it turns out they just released support for federation (ActivityPub)!
What does federation mean in this context? If you set up a NodeBB forum, you can interact with other thread based and federated websites, like Lemmy ... or just another NodeBB forum.
Really cool stuff!
http://web.archive.org/web/20250126233225/https://community....