You can also have SSL internal only domains without self signed certificates with something like acme.sh doing the DNS-01 challenge. It requires a domain registrar with an API but you be able to get the certificate and serve it with your reverse proxy so no need to manage your self signed certs on every device.

You can also get a wildcard cert so you dont need to force a reissue every time you set up a new service

There’s listenbrainz if you scrobble music. Can discover music from there or some projects might try to do Playlist recommendations. navidrome has a plugin that does this though i haven’t tried it because i don’t scrobble to external services

Their chart covers licensing and lists roon as closed source. I don’t think this is intended to be one of the “awesome” FOSS lists