# Calibre Web Automated vs cobalt

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

| | Calibre Web Automated | cobalt |
|---|---|---|
| Score | 73/100 | 83/100 ✓ |
| Rank in category | #2 of 19 in Ebook Management | #1 of 45 in Download Management |
| GitHub stars | 6 503 | 45 595 ✓ |
| Stars, last 30 days | +171 | +1 811 ✓ |
| Stable releases, 12 months | 9 ✓ | 0 |
| Latest release | v4.0.8 · 28 Sept 2026 | — |
| Setup | Moderate | Easy ✓ |
| Official Docker image | Yes | Yes |
| License | GPL-3.0 | AGPL-3.0 |
| Main language | JavaScript | Svelte |

## Which one should you pick?

cobalt scores 83/100 against 73/100 for Calibre Web Automated, so it is the safer default.

Calibre Web Automated ships more often: 9 stable releases in the past year, against 0 for cobalt.

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

cobalt is growing faster right now (+1 811 stars in 30 days).

## Details

- [Calibre Web Automated](https://selfhost.directory/project/calibre-web-automated) (markdown: https://selfhost.directory/project/calibre-web-automated.md)
- [cobalt](https://selfhost.directory/project/cobalt) (markdown: https://selfhost.directory/project/cobalt.md)

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