For managing my library on disk, I just recently made the effort to set up the *arr apps. I love having the metadata, tagging, organizing, and file naming all consistent and automated. Previously I used mp3tag and filebot to manage them and it was way more manual. Everything is set up with docker-compose and Ansible.
Library file stuff:
Two Radarr instances, one for 4k and another for lower resolutions
Sonarr for TV
Lidarr for music
Two readarr instances, one for epub/pdf and one for audiobooks
Jackett
deluge+openVPN
For library frontend stuff:
Jellyfin for movies, tv, music, audiobooks
Plex, for when Jellyfin is acting up
Jellyseer for TV & movie requests
LaunchBox for videogames and emulators
Calibre + calibreWeb for ebooks & syncing to my Kobo eReader
Haven't set up yet:
flaresolverr
unpackerr
audiobookshelf
Doesn't exist yet/wishlist:
*arr app for emulator ROMs (I'll have to check out romm, looks pretty cool!)
Is readarr really worth it? I'm a heavy reader, but i've not set it up.
Also, audiobookshelf is worth the effort. If you're holding off because you don't want to organize your library, the folder structure they use is really really good. I run all sorts of services, and I like jellyfin, komga, the arrs, etc. I love audiobookshelf. By far my most used app.
It's alright. I have it tied in to my existing Calibre library so my metadata and library management workflows haven't really changed. The process of finding and downloading new books has just been streamlined a bit.