# Calibre Web vs Ouroboros

> Two self-hosted projects, compared on the numbers selfhost.directory tracks live: score, popularity, release cadence and setup effort.

| | Calibre Web | Ouroboros |
|---|---|---|
| Score | 78/100 ✓ | 55/100 |
| Rank in category | #1 of 7 in E-book Management | #65 of 209 in AI Agents |
| GitHub stars | 18 488 ✓ | 1 587 |
| Stars, last 30 days | +248 ✓ | +0 |
| Stable releases, 12 months | 2 | 8 ✓ |
| Latest release | 0.6.27 · 8 Aug 2026 | v7.9.0 · 28 Oct 2026 ✓ |
| Setup | Easy ✓ | Moderate |
| Official Docker image | No | No |
| License | GPL-3.0 | MIT |
| Main language | Fluent | Python |

## Which one should you pick?

Calibre Web scores 78/100 against 55/100 for Ouroboros, so it is the safer default.

Ouroboros ships more often: 8 stable releases in the past year, against 2 for Calibre Web.

If you want the quickest setup, Calibre Web is easier to run; Ouroboros needs more configuration.

Calibre Web is growing faster right now (+248 stars in 30 days).

## Details

- [Calibre Web](https://selfhost.directory/project/calibre-web) (markdown: https://selfhost.directory/project/calibre-web.md)
- [Ouroboros](https://selfhost.directory/project/ouroboros) (markdown: https://selfhost.directory/project/ouroboros.md)

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Source: https://selfhost.directory/compare/calibre-web-vs-ouroboros