I just discovered that there are at least nine Collapse communities including this one. In order of subscribers:
- lemmy.ml
- sopuli.xyz
- slrpnk.net
- lemm.ee/lemmy.zip
- infosec.pub (abandoned)
- lemmy.world (locked, abandoned)
- chat.maiion.com (abandoned)
- kbin.social (semi-abandoned)
- zerobytes.monster (locked, abandoned, moderator banned (!))
They have mostly identical goals, although the infosec.pub one is (was) academically focused.