It seems like thre are really only a couple of options, and I haven’t found many review or examples that show enough detail to compare them.
Jellyfin has a bookshelf plugin that seems to be able to handle it. Audiobooks look to be accessed through the main client app, and ebooks through a companion app like JellyBook, which also claims to handle audiobooks.
On the other hand, there is Audiobookshelf, which specializes in audiobooks, but also claims to host ebooks. It has a number of client apps, but none that I found mention eBook reading.
I’ve found a couple of other solutions that seem more specialized. Maybe one of those?
I want to be able to read and listen on an Android device, preferably with a native app. I have a few comics, but mostly interested in books and audiobooks. I already have a Jellyfin server setup.
Audiobookshelf for audiobooks, calibre-web for ebooks. Don’t try to get it to get one thing that does both well, you’re better off with two solutions that are both better at their respective thing.
I’ve read some places that Calibre can be finicky. Have you had to troubleshoot any issues with your deployment?
Calibre is finicky (and I hate the current docker deployment option), but I Calibre-Web** is not, and a totally different project. It’s worth taking a look.