# openGym vs Zed Attack Proxy (ZAP)

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

| | openGym | Zed Attack Proxy (ZAP) |
|---|---|---|
| Score | 81/100 ✓ | 80/100 |
| Rank in category | #1 of 11 in Fitness Tracker | #4 of 78 in Security |
| GitHub stars | 17 039 ✓ | 16 062 |
| Stars, last 30 days | +2 870 ✓ | +247 |
| Stable releases, 12 months | 12 | 31 ✓ |
| Latest release | v1.4.3 · 26 Oct 2026 ✓ | w2026-10-23 · 23 Oct 2026 |
| Setup | Easy | Easy |
| Official Docker image | Yes | Yes |
| License | AGPL-3.0 | Apache-2.0 |
| Main language | JavaScript | Java |

## Which one should you pick?

openGym scores 81/100 against 80/100 for Zed Attack Proxy (ZAP), so it is the safer default.

Zed Attack Proxy (ZAP) ships more often: 31 stable releases in the past year, against 12 for openGym.

openGym is growing faster right now (+2 870 stars in 30 days).

## Details

- [openGym](https://selfhost.directory/project/opengym) (markdown: https://selfhost.directory/project/opengym.md)
- [Zed Attack Proxy (ZAP)](https://selfhost.directory/project/zed-attack-proxy-zap) (markdown: https://selfhost.directory/project/zed-attack-proxy-zap.md)

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Source: https://selfhost.directory/compare/opengym-vs-zed-attack-proxy-zap