I joined a IRC server at the beginning of this year, about 150 users there in total. A few months ago we set up a forum for the server, so I’m gonna say that one, since its the only one that I use, other than lemmy, lol. Its not very active, since there is only some dozens of people using it and not many of them are active, but its our little corner of the internet.

If anyone wants to come check it out, irc.inthemansion.com 6697 is the IRC server, or https://inthemansion.com/ has a webchat, also has the link to the forum there.