Love it.
I had a list of technologies like IPFS, scuttlebut, dat, SOLID (Bernes-Lee) and so on, but don’t find it at the moment. If you could document your findings in a wiki topic (like the resource planning software list) or somewhere else and share the link, I’d be very gladful. Noawadys, a lot of projects take the blockchain hype (and I assumed 95% of it will be gone/given up within the next few years), where it is very difficult to access the real value and basis of these projects - at least for me. Doing stuff “blockchain” seems to often comes with “having a supershiny overpromising webpage” (have to rant a bit here).
And at the last Makers4Humanity lab there was something going a bit into the crossover you mentioned: a local file-sharing hot spot with chat capabilities. I do not remember the projects name, but might stumble upon it again. I think I took a picture of the printed-out usage instructions somwhere.