OrcavsStalwart Mail Server
Two self-hosted projects, compared on the numbers selfhost.directory tracks live: score, popularity, release cadence and setup effort.
| Orca | Stalwart Mail Server | |
|---|---|---|
| Score | 91/100 | 78/100 |
| Rank in category | #1 of 209 in AI Agents | #2 of 16 in Mail Server |
| GitHub stars | 108 815 | 15 462 |
| Stars, last 30 days | +8 908 | +678 |
| Stable releases, 12 months | 15 | 30 |
| Latest release | v1.4.243 · 28 Oct 2026 | v1.0.0 · 26 Oct 2026 |
| Setup | Easy | Moderate |
| Official Docker image | No | Yes |
| License | MIT | AGPL-3.0-only AND LicenseRef-SEL |
| Main language | Typescript | Rust |
Which one should you pick?
Orca scores 91/100 against 78/100 for Stalwart Mail Server, so it is the safer default.
Stalwart Mail Server ships more often: 30 stable releases in the past year, against 15 for Orca.
If you want the quickest setup, Orca is easier to run; Stalwart Mail Server needs more configuration.
Orca is growing faster right now (+8 908 stars in 30 days).
Orca details →Stalwart Mail Server details →
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