IRC also supports anarchism with + channels that simply have no modes and no ops (also no topic which is slightly annoying) but then you are kinda at the mercy

IRC also supports anarchism with + channels that simply have no modes and no ops (also no topic which is slightly annoying) but then you are kinda at the mercy of the network admins to stop the spammers (as well as liberal use of /ignore to ignore spammers). Also some channels just give every non-spammer ops, which kinda also solves the power corrupts issue.