# DeepSeek Harness vs Stalwart Mail Server

> Two self-hosted projects, compared on the numbers selfhost.directory tracks live: score, popularity, release cadence and setup effort.

| | DeepSeek Harness | Stalwart Mail Server |
|---|---|---|
| Score | 87/100 ✓ | 79/100 |
| Rank in category | #3 of 209 in AI Agents | #2 of 16 in Mail Server |
| GitHub stars | 265 285 ✓ | 15 482 |
| Stars, last 30 days | +9 293 ✓ | +679 |
| Stable releases, 12 months | 0 | 31 ✓ |
| Latest release | — | v1.0.1 · 28 Oct 2026 |
| Setup | Moderate ✓ | Moderate |
| Official Docker image | No | Yes ✓ |
| License | MIT | AGPL-3.0-only AND LicenseRef-SEL |
| Main language | Typescript | Rust |

## Which one should you pick?

DeepSeek Harness scores 87/100 against 79/100 for Stalwart Mail Server, so it is the safer default.

Stalwart Mail Server ships more often: 31 stable releases in the past year, against 0 for DeepSeek Harness.

DeepSeek Harness is growing faster right now (+9 293 stars in 30 days).

## Details

- [DeepSeek Harness](https://selfhost.directory/project/deepseek-harness) (markdown: https://selfhost.directory/project/deepseek-harness.md)
- [Stalwart Mail Server](https://selfhost.directory/project/stalwart-mail-server) (markdown: https://selfhost.directory/project/stalwart-mail-server.md)

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Source: https://selfhost.directory/compare/deepseek-harness-vs-stalwart-mail-server