have you checked out https://hivetalk.org yet ? it’s only been like 3 weeks of development by nostr:npub18pudjhdhhp2v8gxnkttt00um729nv93tuepjda2jrwn3eua5tf5s80a699 , still in alpha. 

But it’s like a zoom/jitsi/discord alternative! with nostr log-in and zaps ⚡️