Storyteller is a unique platform that offers a self-hosted solution for syncing both audiobooks and ebooks. With Storyteller, you have the freedom to read or listen to your favorite books however you choose. The platform generates EPUB 3 compliant ebook files, which can be read on any ebook reader that supports EPUB Media Overlays. Alternatively, you can utilize the dedicated Storyteller mobile apps for a seamless reading experience. What sets Storyteller apart is that it allows you to retain complete ownership of your books, as they stay securely on your own hardware. This means you have the flexibility to move, copy, or back them up as you see fit.
https://smoores.gitlab.io/storyteller/