Ask HN: Recommendations for Peer to Peer Frameworks?

I'm looking for peer to peer framework recommendations to build a distributed app. In particular, a framework that supports seeds and peer discovery, message passing, maybe firewall / UPNP support, etc.

I'm not particular about language (Java, Go, Javascript, etc), since it's for a new project. I found this thread from 2016 (https://news.ycombinator.com/item?id=11145691), it had some interesting recommendations, but quite a few were out of date, and with the big push to distributed apps nowadays, I thought it might be a good time to readdress the topic.

Some of the solutions form the other thread or that I've found:

- Smokesignal (Javascript / Node, not updated in >10 months) https://github.com/marcelklehr/smokesignal

- ZeroTier: https://www.zerotier.com/product-netcon.shtml

- Maki: https://maki.io

- Telehash: http://telehash.org/

- A whole host of blockchain projects, Bitcoin, Ethereum, HyperLedger, Scorex (Scala blockchain)

Bitcoin is an interesting option, it certainly has a large user base and is well tested and secure code, but forking it has it's own set of issues.

Look into crdt it’s the shit for collaborative editing (idk if that’s what you ares looking for tho).

Do you happen to know of a decent and easy-ish crdt library in Go?

CRDT is definitely a good pattern for the data passing itself, but one of the really tough parts of these distributed apps is the plumbing work, just getting peers to reliability communicate. That's part of what I'm looking for.

Maybe Scuttlebutt? https://www.scuttlebutt.nz/

Scuttlebutt is advertised as a social network, but in core it is an eternal distributed log. You can pass either public or private messages and assets around.