Calibre-Web vs Readest
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
Readest
Cross-platform ebook reader with sync server
| Feature | Calibre-Web | Readest |
|---|---|---|
| Deploy effort | Under-an-hour setup | Under-an-hour setup |
| Health score | 95 · Excellent | 97 · Excellent |
| Category | E-books & Media Library | E-books & Media Library |
| License | GPL-3.0 | AGPL-3.0 |
| Language | Python | TypeScript |
| Setup difficulty | Easy | Medium |
| Min. RAM | 256 MB | 512 MB |
| Deployment | docker | docker, bare-metal |
| GitHub stars | ★ 18,229 | ★ 24,545 |
| First released | 2017 | 2024 |
| Replaces | Kindle, Goodreads | Kindle, Apple Books |
What are Calibre-Web and Readest?
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
Readest
Readest is an open-source ebook reader with a self-hostable sync server for keeping reading progress and annotations consistent across devices. It supports EPUB and other common formats.
- Cross-device progress sync
- EPUB and PDF support
- Annotations and highlights
- Self-hostable sync server
Calibre-Web vs Readest: key differences
Calibre-Web is written in Python, while Readest is built with TypeScript. Licensing differs — GPL-3.0 for Calibre-Web versus AGPL-3.0 for Readest. Calibre-Web is the lighter option, starting around 256 MB of RAM against 512 MB for Readest. Calibre-Web is the more established project (first released 2017), while Readest arrived in 2024.
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 Readest if…
- Clean modern interface
- Cross-device sync
- Multiple format support
Watch out for
- Relatively young project
- Smaller community
Frequently asked questions
Is Calibre-Web or Readest better?
Neither is universally better. Readest 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 Readest free and open-source?
Yes. Calibre-Web is licensed under GPL-3.0 and Readest under AGPL-3.0. Both can be self-hosted at no software cost.
Can I run Calibre-Web and Readest with Docker?
Calibre-Web: yes. Readest: yes.
Which is lighter on resources, Calibre-Web or Readest?
Calibre-Web has the smaller minimum footprint at 256 MB of RAM, compared to about 512 MB for Readest. Real-world usage depends on library size, user count, and enabled features.