This post promotes Snikket, a chat app built on top of XMPP. It talks a lot about decentralization and protocol development, but I doubt it will be able to best Matrix in this regard. Matrix has bridges connecting it to other apps like Facebook Messenger.
XMPP, meanwhile, seems to have been shuffling along slowly for 20 years without many users or features that appeal to a mass audience (GIFs, etc). So while Matrix could potentially (or already does) link up with Signal, this app doesn't seem like it could get traction/expand because of the dubious base that it stands on.
XMPP, meanwhile, seems to have been shuffling along slowly for 20 years without many users or features that appeal to a mass audience (GIFs, etc). So while Matrix could potentially (or already does) link up with Signal, this app doesn't seem like it could get traction/expand because of the dubious base that it stands on.