# sentry vs Understudy

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

| | sentry | Understudy |
|---|---|---|
| Score | 80/100 ✓ | 48/100 |
| Rank in category | #1 of 9 in Application Performance Monitoring | #110 of 209 in AI Agents |
| GitHub stars | 45 679 ✓ | 465 |
| Stars, last 30 days | +840 ✓ | +0 |
| Stable releases, 12 months | 22 ✓ | 0 |
| Latest release | 26.10.1 · 28 Oct 2026 | — |
| Setup | Advanced | Moderate ✓ |
| Official Docker image | Yes ✓ | No |
| License | Other | MIT |
| Main language | Python | Typescript |

## Which one should you pick?

sentry scores 80/100 against 48/100 for Understudy, so it is the safer default.

sentry ships more often: 22 stable releases in the past year, against 0 for Understudy.

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

sentry is growing faster right now (+840 stars in 30 days).

## Details

- [sentry](https://selfhost.directory/project/sentry) (markdown: https://selfhost.directory/project/sentry.md)
- [Understudy](https://selfhost.directory/project/understudy) (markdown: https://selfhost.directory/project/understudy.md)

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Source: https://selfhost.directory/compare/sentry-vs-understudy