Not quite sure if there is enough of a hive mind on here, but can anyone recommend a simple secure platform where a group (of say 20 known people) can share multiple documents - i.e. like a Google Drive folder, but ideally something less connected to US mega corporations. Has to be private (to a decent level, but not anything super sensitive) and can come with a cost. Suggestions that involve me setting up servers or the like are not 'simple' in my world. Thanks!