The answer is obviously nostr.land. :) While nostr:npub1hu47u55pzjw8cdg0t5f2uvh4znrcvnl3pqz3st6p0pfcctzzzqrsplc46u has their own software that’s it. It runs on MongoDB which is known to be very slow, and they have no value proposition except paid relay. Wine is a set of duct taped relays running on strfry, and you’d need 4 relay connections to only somewhat replicate the functionality of Nostr.land. And Nostr.land offers convenient import/export and runs NFDB.