Thank you for mentioning 0xchat. Just to clarify, our DMs are compatible with clients that support NIP-17, such as Amethyst and Coracle
I've updated the article on encrypted communication tools again. I've added Keet, I've completely updated Status because they have an epic new version that's more decentralized and it's a replacement for Discord rather than Signal. I threw out XX messenger because they stopped developing it. And I added Nostr-based messengers - direct messages, 0xchat and keychat.
https://juraj.bednar.io/en/blog-en/2022/05/03/encrypted-messengers-comparison/