- Nextcloud, mainly for calendars and contacts; occasionally for sharing files with others.
- Syncthing for syncing files.
Quick question: have you thought about hosting Radicale and filebrowser instead of NextCloud? I think that would be definetly lighter on your system.
Also: I have read lots of mixed opinions whether mailservers should be selfhosted - what is your take on this? Do you know about problems reaching the big player mailservers?
so… it can not be FreeBSD? :)