# open-compute vs Stalwart Mail Server

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

| | open-compute | Stalwart Mail Server |
|---|---|---|
| Score | 55/100 | 78/100 ✓ |
| Rank in category | #3 of 7 in Serverless | #2 of 16 in Mail Server |
| GitHub stars | 2 380 | 15 462 ✓ |
| Stars, last 30 days | — | +678 |
| Stable releases, 12 months | 9 | 30 ✓ |
| Latest release | v0.3.0 · 10 Oct 2026 | v1.0.0 · 26 Oct 2026 ✓ |
| Setup | Moderate ✓ | Moderate |
| Official Docker image | No | Yes ✓ |
| License | Apache-2.0 | AGPL-3.0-only AND LicenseRef-SEL |
| Main language | Rust | Rust |

## Which one should you pick?

Stalwart Mail Server scores 78/100 against 55/100 for open-compute, so it is the safer default.

Stalwart Mail Server ships more often: 30 stable releases in the past year, against 9 for open-compute.

Stalwart Mail Server is growing faster right now (+678 stars in 30 days).

## Details

- [open-compute](https://selfhost.directory/project/open-compute) (markdown: https://selfhost.directory/project/open-compute.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/open-compute-vs-stalwart-mail-server