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2016 (https://news.ycombinator.com/item?id=11145691), it had some interesting recommendations, but quite a few were out of date, and with the big push to distributed apps nowadays, I thought it might be a good time to readdress the topic.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, E