# Calibre Web Automated vs Concat

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

| | Calibre Web Automated | Concat |
|---|---|---|
| Score | 73/100 | 82/100 ✓ |
| Rank in category | #2 of 19 in Ebook Management | #1 of 18 in Video Processing |
| GitHub stars | 6 504 | 12 434 ✓ |
| Stars, last 30 days | +172 | +2 435 ✓ |
| Stable releases, 12 months | 9 ✓ | 6 |
| Latest release | v4.0.8 · 28 Sept 2026 | v0.2.8 · 20 Oct 2026 ✓ |
| Setup | Moderate | Easy ✓ |
| Official Docker image | Yes ✓ | No |
| License | GPL-3.0 | AGPL-3.0 |
| Main language | JavaScript | Rust |

## Which one should you pick?

Concat scores 82/100 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 6 for Concat.

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

Concat is growing faster right now (+2 435 stars in 30 days).

## Details

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

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