mCaptchavsStalwart Mail Server
Two self-hosted projects, compared on the numbers selfhost.directory tracks live: score, popularity, release cadence and setup effort.
| mCaptcha | Stalwart Mail Server | |
|---|---|---|
| Score | 55/100 | 79/100 |
| Rank in category | #32 of 78 in Security | #2 of 16 in Mail Server |
| GitHub stars | 2 498 | 15 470 |
| Stars, last 30 days | +5 | +667 |
| Stable releases, 12 months | 0 | 31 |
| Latest release | — | v1.0.1 · 28 Oct 2026 |
| Setup | Moderate | Moderate |
| Official Docker image | Yes | Yes |
| License | AGPL-3.0 | AGPL-3.0-only AND LicenseRef-SEL |
| Main language | Rust | Rust |
Which one should you pick?
Stalwart Mail Server scores 79/100 against 55/100 for mCaptcha, so it is the safer default.
Stalwart Mail Server ships more often: 31 stable releases in the past year, against 0 for mCaptcha.
Stalwart Mail Server is growing faster right now (+667 stars in 30 days).
mCaptcha details →Stalwart Mail Server details →
Swap a project
Keep mCaptcha, compare it with
Keep Stalwart Mail Server, compare it with