I'm a big fan of Matrix, and run a small homeserver for my family in friends. But if you really want to explore the frontiers peer to peer seems really intrigu

I'm a big fan of Matrix, and run a small homeserver for my family in friends. But if you really want to explore the frontiers peer to peer seems really intriguing because you don't need any server. https://tox.chat/ https://tox.chat/ just to name one.