There are a couple of other Fediverse communities for Emacs (ex: https://kbin.social/m/emacs/newest , https://programming.dev/c/emacs?dataType=Post&page=1&sort=New , https://lemmy.ml/c/emacs?dataType=Post&page=1&sort=New (which is down at the moment)), but none are particularly active.
There are a couple of other Fediverse communities for Emacs (ex: https://kbin.social/m/emacs/newest , https://programming.dev/c/emacs?dataType=Post&page=1&sort=New , https://lemmy.ml/c/emacs?dataType=Post&page=1&sort=New (which is down at the moment)), but none are particularly active.