What other Nostr apps should nostr:npub1f4faufazfl4cf43c893wx5ppnlqfu4evy2shc4p9gknfe56mqelsc5f7ql be looking at? 

He’s the tech reporter who wrote the seminal essay “Protocols not Platforms: A technological approach to free speech” Which you should all read if you haven’t. 

https://knightcolumbia.org/content/protocols-not-platforms-a-technological-approach-to-free-speech

nostr:note1pslceq5td0n4uhxrh5qtpzgmx82449rmj52ws2g8vll7nfpw0amqznf8tn