# Calibre vs Workout.cool

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

| | Calibre | Workout.cool |
|---|---|---|
| Score | 83/100 ✓ | 66/100 |
| Rank in category | #1 of 19 in Ebook Management | #2 of 11 in Fitness Tracker |
| GitHub stars | 26 268 ✓ | 8 650 |
| Stars, last 30 days | +269 ✓ | +155 |
| Stable releases, 12 months | 18 ✓ | 1 |
| Latest release | v9.17.0 · 23 Oct 2026 ✓ | v1.3.2 · 7 Dec 2025 |
| Setup | Easy ✓ | Easy |
| Official Docker image | No | No |
| License | GPL-3.0 | MIT |
| Main language | Python | Typescript |

## Which one should you pick?

Calibre scores 83/100 against 66/100 for Workout.cool, so it is the safer default.

Calibre ships more often: 18 stable releases in the past year, against 1 for Workout.cool.

## Details

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

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Source: https://selfhost.directory/compare/calibre-vs-workout-cool