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Jellyfin/Plex like many have mentioned.
I personally like Syncthing for petty much everything else. For general file syncing of course. But also with Joplin pointed to a synced directory for notes. With keepass as a password vault. With synced config directories for some apps across devices like newsboat for RSS, and neomutt for email. I also used to use it with rtorrent via a watch directory, though I currently am using a seedbox for that purpose.
VPN (openvpn/wireguard) is a good idea if you want to access your services outside your local network, without exposing them all globally.
That would suck if so since I obviously utilize it heavily but this doesn’t seem to be the case? Latest release was just a month ago and their github repo is active.