Nextcloud is what you are looking for. I've been running it for a while on a VPS I rent. I provides file sync, calendar, audio player, password storage (passma

Nextcloud is what you are looking for. I've been running it for a while on a VPS I rent. I provides file sync, calendar, audio player, password storage (passman), weather and much more with many plugins (which are really easy to install with the app store). It's stable and the biggest hurdles I have encountered were linked to mysql and charset encoding that lead to something to be above the maximal value in the database.