Calibre 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
Powerful ebook library manager with a built-in server
VS
Readest
Cross-platform ebook reader with sync server
| Feature | Calibre | Readest |
|---|---|---|
| Deploy effort | Under-an-hour setup | Under-an-hour setup |
| Health score | 97 · 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 | 512 MB | 512 MB |
| Deployment | docker, bare-metal, binary | docker, bare-metal |
| GitHub stars | ★ 25,999 | ★ 24,565 |
| First released | 2006 | 2024 |
| Replaces | Kindle, Apple Books | Kindle, Apple Books |
What are Calibre and Readest?
Calibre
Calibre is a comprehensive ebook management application for organizing, converting, and reading digital books. Its built-in content server lets you browse and download your library from any device over the network.
- Ebook library management
- Format conversion
- Built-in content server
- Extensive plugin ecosystem
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 vs Readest: key differences
Calibre is written in Python, while Readest is built with TypeScript. Licensing differs — GPL-3.0 for Calibre versus AGPL-3.0 for Readest. Calibre is the more established project (first released 2006), while Readest arrived in 2024.
Why pick each one
Choose Calibre if…
- Industry-standard ebook tool
- Huge feature set
Watch out for
- Desktop UI feels dated
- Server is basic without add-ons
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 or Readest better?
Calibre is the stronger all-round pick: it has both the larger community and the simpler easy setup. Consider Readest if its specific feature set fits your needs better.
Are Calibre and Readest free and open-source?
Yes. Calibre 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 and Readest with Docker?
Calibre: yes. Readest: yes.