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.
+1 for audiobookshelf
I use it for audiobooks and podcasts.
Does it support ebooks? Never known.
Anyway I wouldn’t use it for ebooks, better to use a dedicated reader. Even if they seems to be the same stuff (books) they really are not as one is pure audio and other pure text. Way different way to use them that I think no good reader supports both formats at once in a satisfactory way.
Audiobookshelf for sure. It handles audiobooks fabulously, and it also does handle ebooks.
I use it to manage my eBook library, but not as the reader. You can set up a “send to ereader” option to email the ebooks to your reader of choice. So I just shoot them off to my pocketbook ereader when I want to read one.