# Calibre vs growthbook

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

| | Calibre | growthbook |
|---|---|---|
| Score | 83/100 ✓ | 71/100 |
| Rank in category | #1 of 19 in Ebook Management | #3 of 8 in Feature Flags |
| GitHub stars | 26 278 ✓ | 8 547 |
| Stars, last 30 days | +269 ✓ | +122 |
| Stable releases, 12 months | 18 ✓ | 6 |
| Latest release | v9.17.0 · 23 Oct 2026 ✓ | v5.1.0 · 22 Sept 2026 |
| Setup | Easy ✓ | Moderate |
| Official Docker image | No | Yes ✓ |
| License | GPL-3.0 | Other |
| Main language | Python | Typescript |

## Which one should you pick?

Calibre scores 83/100 against 71/100 for growthbook, so it is the safer default.

Calibre ships more often: 18 stable releases in the past year, against 6 for growthbook.

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

Calibre is growing faster right now (+269 stars in 30 days).

## Details

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

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