[nanomonkey]

Off the top of my head: Hypercore (DAT), GUN, Secure Scuttlebutt, IPFS, PPPP, Bamboo, BlueSky, Spritely Goblins...

If this is your jam, check out DWeb camp, put on by the Internet Archive, there will be a lot of us decentralized web technologist there.

[xd1936]

Great suggestions. I'd also add that learning how the DHT works is a great jumping off point.