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oboku

oboku

Cloud-based e-book reader with sync function for your personal library

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Hearts Heat (0–100)
29 Stars GPL-3.0 Jul 6, 2026 Since Apr 2022 34 open issues

AI Summary

Oboku is a cloud-based or self-hostable e-book reader that manages e-books, audiobooks, comics, and PDFs. The tool synchronizes libraries from various sources such as Google Drive, Dropbox, Synology, or WebDAV and works offline on all devices with a browser.

Screenshot of oboku website

Pros

  • + Supports many formats (.epub, .cbz, .cbr, .pdf) and sync sources
  • + Open source, free, and ad-free with self-hosting option
  • + Works cross-platform in the browser with offline mode and e-ink support

Cons

  • Web-based, no native app for optimal performance
  • Long-term availability of the cloud service depends on infrastructure costs

Use Cases

  • Centralized management of personal e-book collections from various cloud storage services
  • Offline reading of e-books, comics, and PDFs on different devices
  • Sharing your own library with friends via shared cloud folders
  • Self-hosting a private digital library with full data control

Who is it for?

For readers and book collectors who want to manage their digital library across platforms and maintain full control over their data.

Tags

What is oboku?

Oboku is an e-book reader that consolidates a personal digital library from multiple cloud storage services and makes it accessible across devices. Rather than buying and reading books within a locked platform, oboku connects existing storage locations such as Google Drive, Dropbox, Synology or WebDAV into a unified library. The reader runs in the browser, which means it works on any device without installation. Users who want to avoid cloud dependency can run oboku as a self-hosted instance, retaining full control over their data and infrastructure.

Core features

  • Multi-source sync: Libraries can be connected from Google Drive, Dropbox, Synology and WebDAV, and shared folders can be shared with other users.
  • Broad format support: oboku reads EPUB, CBZ, CBR and PDF, covering standard e-books, comics and documents.
  • Offline mode: Content is available without an internet connection, making the reader practical on e-ink devices and tablets.
  • Open source without monetisation: No subscription, no ads. The code is public and the cloud version is free.
  • Self-hosting option: Users who run their own infrastructure can host oboku entirely independently of the provider's cloud service.

Who is oboku for?

Oboku is aimed at readers who already store their books in cloud services and do not want a separate app for each one. The tool is particularly relevant for anyone looking to centralise EPUB collections from different sources without depending on a proprietary ecosystem. Self-hosters with their own server benefit from complete data control. Users who expect a native app with deeper operating system integration will run into the limits of the browser-based approach.

Context & alternatives

Oboku belongs to the category of personal e-book managers with cloud sync, an area where Calibre is the best-known open-source tool. Calibre runs as a desktop application with extensive management features, while oboku relies entirely on the browser, making library management accessible from any device without a server. Commercial alternatives such as Kindle or Kobo tie users to their own stores and ecosystems. Anyone who already keeps their book collection on cloud storage and wants to read across platforms will find oboku a more direct route than desktop software requiring a separate server setup.

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