What are good peer to peer systems for sending data rather than messages to each other? Dweb stuff on @delta ? How easy is it to install on things like windows and macs? How easy is it to persist to stuff like local storage (a file or database that could be accessed by other programs easily)? Is @spritely goblins right for this?

I might be writing things with sensitive data that I don't want to store centrally, but needs to be easy for end users.