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.
Sounds like Jellfyfin+Jellybook is your winner then. The server portion of audiobook or ebook hosting isn’t going to be giving you any game changing features. They serve files.
The client you use is going to make or break your experience here, so just go with the easiest setup on the server side, and then run through some clients to see what works best.
I think specific solutions for each type of content would be better in the long term if you have a lot of stuff to host, and management/organization will be better since they are catered to whatever the content type is.
Others have already said it, Audiobookshelf is a good one. For EBooks though, I would highly recommend Calibre Content server. Calibre is pretty much the defacto open source EBook manager out there, a lot of features and abilities specific to ereaders and ebooks of all formats.
For me, AudioBookShelf is the clear standout for audio books, and I ended up going with Kavita for ebooks.
I just learned about it recently, and it looks really awesome. It does ebooks, audio, and both. It’s main feature is that you can read along with the audio, and it will highlight sentences as the audio goes.
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.
Since they’re different applications entirely and you wouldn’t use the same client for each, I use Calibre as a kasmweb docker image for ebooks and enable OPDS for it to hook up with my FBreader app. Audiobooks are done with Audiobookshelf and outputs an RSS feed for Antennapod subscription.
I currently use antenna pod for listening to podcasts and I love it. Am I understanding correctly that you also use it for audiobooks? Does show each chapter as a separate episode or how does that work?
https://www.audiobookshelf.org/guides/rss_feeds/
So set the books up in a collection, and add each book. RSS the collection and each book shows up as an episode. I wouldn’t want chapters as episodes, that would be annoying usually.