I need advice from Denmark, Schleswig-Holstein, and whoever else is de-Microsofting and de-Googleing right now.

I need advice from Denmark, Schleswig-Holstein, and whoever else is de-Microsofting and de-Googleing right now. For non-IT people who need to manage other people's calendars, tasks, inboxes that need to be accessed by multiple people (not mailing lists), what do you use on Linux?

#linux #degoogle #danmarkskifter