There's also Session, which runs their own p2p network of onion routers as a part of their blockchain initiative [1]. Status is another, which runs p2p waku no

There's also Session, which runs their own p2p network of onion routers as a part of their blockchain initiative [1]. Status is another, which runs p2p waku nodes and is heavily connected to Ethereum [2]. Neither of them requires a phone number, plus both are open-source and p2p. [1] https://getsession.org/ https://getsession.org/ [2] https://status.im/ https://status.im/