Calibre-Web vs KOReader
A side-by-side comparison of two self-hosted e-books & media library options — licensing, setup difficulty, resource needs, and what each one replaces.
Calibre-Web
Web app to browse and read your Calibre library
VS
KOReader
Document and ebook reader for e-ink and mobile devices
| Feature | Calibre-Web | KOReader |
|---|---|---|
| Deploy effort | Under-an-hour setup | Read-the-docs project |
| Health score | 95 · Excellent | 98 · Excellent |
| Category | E-books & Media Library | E-books & Media Library |
| License | GPL-3.0 | AGPL-3.0 |
| Language | Python | Lua |
| Setup difficulty | Easy | Medium |
| Min. RAM | 256 MB | 256 MB |
| Deployment | docker | binary, source |
| GitHub stars | ★ 18,232 | ★ 29,880 |
| First released | 2017 | 2012 |
| Replaces | Kindle, Goodreads | Kindle, Pocketbook reader |
What are Calibre-Web and KOReader?
Calibre-Web
Calibre-Web is a web application that provides a clean interface to browse, read, and download books from an existing Calibre library. It targets users who want web access to their e-book collection. It is deployed via Docker.
- Web interface for Calibre libraries
- In-browser e-book reader
- Send to Kindle support
- OPDS feed for apps
KOReader
KOReader is an open-source document viewer for EPUB, PDF, DjVu, and many other formats, optimized for e-ink screens. It can connect to self-hosted OPDS catalogs and supports syncing reading progress.
- E-ink optimized rendering
- Many document formats
- OPDS catalog support
- Reading progress sync
Calibre-Web vs KOReader: key differences
Calibre-Web is written in Python, while KOReader is built with Lua. Licensing differs — GPL-3.0 for Calibre-Web versus AGPL-3.0 for KOReader. KOReader is the more established project (first released 2012), while Calibre-Web arrived in 2017. Calibre-Web lists first-class Docker deployment; KOReader does not.
Why pick each one
Choose Calibre-Web if…
- Great companion to Calibre
- Multi-user access
- Lightweight
Watch out for
- Needs an existing Calibre library
- Not a metadata manager itself
Choose KOReader if…
- Excellent e-ink support
- Huge format support
- Highly customizable reading
Watch out for
- Dense menu system
- Install varies by device
Frequently asked questions
Is Calibre-Web or KOReader better?
Neither is universally better. KOReader has the larger community, while Calibre-Web is simpler to set up (easy difficulty). Choose based on the comparison table above and your own setup.
Are Calibre-Web and KOReader free and open-source?
Yes. Calibre-Web is licensed under GPL-3.0 and KOReader under AGPL-3.0. Both can be self-hosted at no software cost.
Can I run Calibre-Web and KOReader with Docker?
Calibre-Web: yes. KOReader: check the project docs for container support.