Apache HopvsStalwart Mail Server
Two self-hosted projects, compared on the numbers selfhost.directory tracks live: score, popularity, release cadence and setup effort.
| Apache Hop | Stalwart Mail Server | |
|---|---|---|
| Score | 64/100 | 79/100 |
| Rank in category | #1 of 1 in ETL | #2 of 16 in Mail Server |
| GitHub stars | 1 514 | 15 479 |
| Stars, last 30 days | +38 | +676 |
| Stable releases, 12 months | 0 | 31 |
| Latest release | — | v1.0.1 · 28 Oct 2026 |
| Setup | Moderate | Moderate |
| Official Docker image | Yes | Yes |
| License | Apache-2.0 | AGPL-3.0-only AND LicenseRef-SEL |
| Main language | Java | Rust |
Which one should you pick?
Stalwart Mail Server scores 79/100 against 64/100 for Apache Hop, so it is the safer default.
Stalwart Mail Server ships more often: 31 stable releases in the past year, against 0 for Apache Hop.
Stalwart Mail Server is growing faster right now (+676 stars in 30 days).
Apache Hop details →Stalwart Mail Server details →