A friend and I have a long running Pathfinder homebrew that we have collaborated on for nearly a decade in Google Docs. It is 168 pages long and represents a body of work that we are both incredibly proud of. With Google's recent activities banning people from their own private documents, I no longer trust them with the document. I would love of LibreOffice supported local cloud hosting, but they do not. I could install Dropbox API on my Raspberries Pi and just set up my own cloud server, but I really don't want to be responsible for the maintenance.

Any FOSS software out there make it easy to do the whole private cloud with collaboration tools in word procrssing?