I don’t know what discord is, but I find that every social media owner/admin and developer can be reached at discord. Another thing is Matrix.
I’ve got no clue about these two platforms but I believe that they’re not a part of the fediverse.
I very much wish that replicas of these were available on fediverse, so that we could interact with them from our Mastodon, lemmy or other Fediverse handles.


I’ve interacted on lemmy from my mastodon account, but l spend more time on Piefed now.
!dumbquestions@crazypeople.online
Lemmy vs Piefed doesn’t really make a difference, because it’s the same type of Reddit-style platform (also called “threadiverse”), while Mastodon is Twitter-style. The interoperability isn’t great IMO, because the usage patterns are quite different. e.g. if you reply to a Mastodon post on a threadiverse platform, the OOP on Mastodon won’t see any of the replies, and are probably not even aware that there are threadiverse threads about their post. IIRC you need to @ the OOP in each of your replies, which you need to do manually in the threadiverse, which isn’t particularly obvious if you never use Mastodon yourself.