Out of curiosity rather than necessity, are there any activitypub based messaging apps (i.e matrix/discord-like)?

One not listed is Ibis (https://ibis.wiki/) which hasn’t had much traction. Honestly unsure of how useful it is as a direct wikipedia replacement but i can see it as a cool idea for a bunch of related communities that would otherwise be on separate wikis.

I saw the thumbnail and thought it was a pic of Joey Jordison from when he was in Murderdolls…

I knew somebody who used the more British version in a game - Hugh Jarse