# grimmory vs harness

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

| | grimmory | harness |
|---|---|---|
| Score | 69/100 | 80/100 ✓ |
| Rank in category | #2 of 12 in Book Management | #3 of 28 in CI/CD |
| GitHub stars | 4 623 | 38 745 ✓ |
| Stars, last 30 days | +204 | +318 ✓ |
| Stable releases, 12 months | 19 ✓ | 6 |
| Latest release | v3.5.0 · 21 Sept 2026 ✓ | v2.28.2 · 20 Apr 2026 |
| Setup | Moderate | Easy ✓ |
| Official Docker image | Yes | Yes |
| License | AGPL-3.0 | Apache-2.0 |
| Main language | Java | Go |

## Which one should you pick?

harness scores 80/100 against 69/100 for grimmory, so it is the safer default.

grimmory ships more often: 19 stable releases in the past year, against 6 for harness.

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

## Details

- [grimmory](https://selfhost.directory/project/grimmory) (markdown: https://selfhost.directory/project/grimmory.md)
- [harness](https://selfhost.directory/project/harness) (markdown: https://selfhost.directory/project/harness.md)

---
Source: https://selfhost.directory/compare/grimmory-vs-harness