I think they are not updated within the Nostr ecosystem, also they seem to be not very active and lacking in collaborators, just have a look at Earthstar GH. Last but not least, they are funded by the European Union.
This is a first for me, a Nostr app which has migrated off of Nostr to a newer protocol, willow.
https://github.com/cynsar-foundation/second.exchange
Willow is one of the most interesting emerging protocols, this is the first time i’ve seen a willow app in the wild.
Discussion
That last one is a HUUUUGE nope.