# Calibre vs Orca

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

| | Calibre | Orca |
|---|---|---|
| Score | 83/100 | 91/100 ✓ |
| Rank in category | #1 of 19 in Ebook Management | #1 of 209 in AI Agents |
| GitHub stars | 26 268 | 109 022 ✓ |
| Stars, last 30 days | +269 | +9 115 ✓ |
| Stable releases, 12 months | 18 ✓ | 15 |
| Latest release | v9.17.0 · 23 Oct 2026 | v1.4.243 · 28 Oct 2026 ✓ |
| Setup | Easy | Easy ✓ |
| Official Docker image | No | No |
| License | GPL-3.0 | MIT |
| Main language | Python | Typescript |

## Which one should you pick?

Orca scores 91/100 against 83/100 for Calibre, so it is the safer default.

Calibre ships more often: 18 stable releases in the past year, against 15 for Orca.

Orca is growing faster right now (+9 115 stars in 30 days).

## Details

- [Calibre](https://selfhost.directory/project/calibre) (markdown: https://selfhost.directory/project/calibre.md)
- [Orca](https://selfhost.directory/project/orca) (markdown: https://selfhost.directory/project/orca.md)

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Source: https://selfhost.directory/compare/calibre-vs-orca