I agree. Nextcloud is not so great. It does too many things. It’s still OK to use it, because it replaces file sharing in the cloud and you can have your own addressbook or contacts without sacrificing privacy in the Google cloud.

Nothing special. It just runs and updates well. It also tells you what you forgot to do.

I thought about using a dedicated addressbook, calendar and file sharing, but I’d need to have some time and at the moment it’s just running without headaches.