I have a Plex server for film, tv, audiobooks and music and and a Calibre server for ebooks. I have shelves for my physical book collection that now need re-organising, since I have recently moved. Getting the Plex and Calibre server up and running was a lot quicker, I have to say.
At some stage, I expect that I will move to Jellyfin, but Plex is still ok for now.