@Blort @firstname.lastname@example.org @teleclimber @news @macgirvin
Matrix is a completely different project. Something like Slack or Discord
#Zot is a communications protocol (like #activitypub) which friendica and hubzilla use.
#Hubzilla has more functionality than #Friendica and is set to get the latest federation goodness from zot development sooner. They do however have a different focus, though somewhat overlapping.