Sabnzb + lidarr + jellyfin/finamp?

AnduinOS?

Is it possible to sync between machines? Like with a centralized db selfhosted or with rsync?

Holy moly! Size of this app is 414.4MB. Why is that?

https://soverin.com/

Ploopy mouse?

Yes but you can disable the webui with a env variable for docker and dont allow any channel without password, this is the most strict way with ntfy.sh

Looks like a great way to phising

Databag

Have you considered Bitwig Studio? It has native linux support.