# hadoop vs Postal

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

| | hadoop | Postal |
|---|---|---|
| Score | 76/100 ✓ | 72/100 |
| Rank in category | #1 of 1 in Distributed Systems | #3 of 16 in Mail Server |
| GitHub stars | 15 703 | 16 900 ✓ |
| Stars, last 30 days | +34 | +73 ✓ |
| Stable releases, 12 months | 0 | 3 ✓ |
| Latest release | — | 3.3.7 · 3 Jun 2026 |
| Setup | Advanced | Advanced ✓ |
| Official Docker image | No | Yes ✓ |
| License | Apache-2.0 | MIT |
| Main language | Java | Ruby |

## Which one should you pick?

hadoop scores 76/100 against 72/100 for Postal, so it is the safer default.

Postal ships more often: 3 stable releases in the past year, against 0 for hadoop.

Postal is growing faster right now (+73 stars in 30 days).

## Details

- [hadoop](https://selfhost.directory/project/hadoop) (markdown: https://selfhost.directory/project/hadoop.md)
- [Postal](https://selfhost.directory/project/postal) (markdown: https://selfhost.directory/project/postal.md)

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Source: https://selfhost.directory/compare/hadoop-vs-postal