RadicalevsStalwart Mail Server
Two self-hosted projects, compared on the numbers selfhost.directory tracks live: score, popularity, release cadence and setup effort.
| Radicale | Stalwart Mail Server | |
|---|---|---|
| Score | 69/100 | 78/100 |
| Rank in category | #1 of 30 in Calendar & Contacts | #2 of 16 in Mail Server |
| GitHub stars | 5 154 | 15 462 |
| Stars, last 30 days | +115 | +678 |
| Stable releases, 12 months | 19 | 30 |
| Latest release | v3.9.0 · 25 Oct 2026 | v1.0.0 · 26 Oct 2026 |
| Setup | Easy | Moderate |
| Official Docker image | Yes | Yes |
| License | GPL-3.0 | AGPL-3.0-only AND LicenseRef-SEL |
| Main language | Python | Rust |
Which one should you pick?
Stalwart Mail Server scores 78/100 against 69/100 for Radicale, so it is the safer default.
Stalwart Mail Server ships more often: 30 stable releases in the past year, against 19 for Radicale.
If you want the quickest setup, Radicale is easier to run; Stalwart Mail Server needs more configuration.
Stalwart Mail Server is growing faster right now (+678 stars in 30 days).
Radicale details →Stalwart Mail Server details →
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