You might be interested in upspin.io. It's by some of the people involved in plan9 and/or Go. It's an ambitious project because ultimately you need to coerce a

You might be interested in upspin.io. It's by some of the people involved in plan9 and/or Go. It's an ambitious project because ultimately you need to coerce all the apps with valuable data to export to or be compatible with upspin to realize the dream, so to speak. However right now I've already found it useful for storing my personal files and media and I've enjoyed reading the codebase.