Would be interesting to see a breakdown of relay implementations, I'd guess most use strfry which had its latest commit last year
nostr:npub1uac67zc9er54ln0kl6e4qp2y6ta3enfcg7ywnayshvlw9r5w6ehsqq99rx
Discussion
According to legacy nostr.watch, `nostr-rs-relay` still dominates.
https://nostr.watch/relays/statistics
But this **only includes `wss` relays, not `ws` or `onion`**. I'm monitoring via NIP-66 for `wss` and `ws` but not `onion` yet, could be calculated pretty easily by anyone...