# Calibre vs trigger

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

| | Calibre | trigger |
|---|---|---|
| Score | 83/100 ✓ | 76/100 |
| Rank in category | #1 of 19 in Ebook Management | #7 of 32 in Workflow Automation |
| GitHub stars | 26 270 ✓ | 16 644 |
| Stars, last 30 days | +271 ✓ | +257 |
| Stable releases, 12 months | 18 | 49 ✓ |
| Latest release | v9.17.0 · 23 Oct 2026 | v4.8.1 · 23 Oct 2026 |
| Setup | Easy ✓ | Advanced |
| Official Docker image | No | Yes ✓ |
| License | GPL-3.0 | Apache-2.0 |
| Main language | Python | Typescript |

## Which one should you pick?

Calibre scores 83/100 against 76/100 for trigger, so it is the safer default.

trigger ships more often: 49 stable releases in the past year, against 18 for Calibre.

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

## Details

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

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