HarborvsPostal
Two self-hosted projects, compared on the numbers selfhost.directory tracks live: score, popularity, release cadence and setup effort.
| Harbor | Postal | |
|---|---|---|
| Score | 80/100 | 72/100 |
| Rank in category | #1 of 12 in Container Registry | #3 of 16 in Mail Server |
| GitHub stars | 29 639 | 16 899 |
| Stars, last 30 days | +185 | +72 |
| Stable releases, 12 months | 10 | 3 |
| Latest release | v2.14.6 · 23 Oct 2026 | 3.3.7 · 3 Jun 2026 |
| Setup | Moderate | Advanced |
| Official Docker image | No | Yes |
| License | Apache-2.0 | MIT |
| Main language | Go | Ruby |
Which one should you pick?
Harbor scores 80/100 against 72/100 for Postal, so it is the safer default.
Harbor ships more often: 10 stable releases in the past year, against 3 for Postal.
If you want the quickest setup, Harbor is easier to run; Postal needs more configuration.
Harbor is growing faster right now (+185 stars in 30 days).
Harbor details →Postal details →
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