e-book reader / document viewer
KOReader is a cross-platform e-book reader for e-ink devices and other platforms, supporting PDF, EPUB, DjVu, CBZ, and many more formats.
Same problem, same approach. Swapping one for another is a config change, not a rewrite.
choose for a modern cross-platform GUI and library management rather than e-ink optimization.
A modern ebook manager and reader with sync and backup capacities for Windows, macOS, Linux, Android, iOS and Web
choose for a lightweight, fast e-ink reader on reMarkable/Kobo if you need fewer formats.
Document reader
choose for a modern cross-platform reader with sync and AI features if e-ink is not required.
Readest is a modern, feature-rich ebook reader designed for avid readers offering seamless cross-platform access, powerful tools, and an intuitive interface to elevate your reading experience.
choose for a Qt desktop reader on Linux with library management, not for e-ink devices.
Qt based ebook reader
choose for a lightweight Android PDF/DjVu/CBZ viewer, but it lacks KOReader's other formats and e-ink mode.
Orion Viewer is pdf, djvu, xps, cbz and tiff file viewer for Android devices based on mupdf and DjVuLibre libraries
choose for a fast native Windows PDF/EPUB/CBZ reader if you don't need e-ink support.
SumatraPDF reader
choose for a modern Android/desktop reader with AI features if e-ink is not your focus.
Featuring powerful AI capabilities and supporting various e-book formats, it makes reading smarter and more focused.
choose for a standards-based, accessible desktop EPUB/PDF reader powered by Readium.
A cross platform desktop reading app, based on the Readium Desktop toolkit
choose for an Android reader with a different UI/features, but not e-ink-optimized.
Book Reader for Android
Solves the same problem with a different architecture or at a different layer. Expect to rewrite the integration.
choose for a self-hosted web PDF manager/editor across devices instead of a native app.
Selfhosted PDF manager, viewer and editor offering a seamless user experience on multiple devices.
a minimal e-reader OS environment, not an app to embed; choose if you want a dedicated OS.
A clean, minimal E-Reader experience
choose for a terminal-based EPUB/PDF/DjVu reader if you prefer CLI over GUI.
A terminal EPUB / PDF Book Reader (+djvu)
choose for a self-hosted reading server with web UI for books/comics on any device.
Kavita is a fast, feature rich, cross platform reading server. Built with the goal of being a full solution for all your reading needs. Setup your own server and share your reading collection with your friends and family.
choose for a self-hosted web manga/doujinshi server with a reader, if your library is manga-specific.
Web application for archival and reading of manga/doujinshi. Lightweight and Docker-ready for NAS/servers.
An earlier or more limited way to do the job. Still the right call when you need something small, proven, or CPU-only.
choose for a minimal framebuffer PDF/DjVu viewer on classic e-ink Linux if you only need basic viewing, despite being unmaintained.
A Linux framebuffer pdf, djvu, epub, xps, and cbz viewer
choose if you exclusively read manga on Android and want a dedicated source-combing reader, though it's archived.
Manga reader for Android
These projects were analysed and named koreader among their alternatives. The relationship is not symmetric — how koreader rates them is a separate judgement, made when koreader is analysed in its own right.
calls koreader “Multi-format reader for e-readers/Android instead of Windows.”
SumatraPDF reader
calls koreader “Choose it for reading on e-ink devices like Kindle/Kobo instead of a Linux desktop app.”
Read e-books in style
calls koreader “Use it on e-ink devices or Android when you need deep PDF replay and format support.”
Featuring powerful AI capabilities and supporting various e-book formats, it makes reading smarter and more focused.
calls koreader “Choose when targeting e-ink devices (Kindle/Kobo/PocketBook) or needing advanced PDF/DjVu rendering; lacks Koodo's cloud sync and desktop/web manager.”
A modern ebook manager and reader with sync and backup capacities for Windows, macOS, Linux, Android, iOS and Web
calls koreader “Choose it for mature e-ink device support and many formats; it targets dedicated readers/Android, not desktop.”
A minimalistic cross-platform eBook reader built with Tauri, Epub.js, and Typescript