# altcha vs WindowsinDocker

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

| | altcha | WindowsinDocker |
|---|---|---|
| Score | 63/100 | 83/100 ✓ |
| Rank in category | #2 of 4 in Anti-Spam | #1 of 15 in Virtualization |
| GitHub stars | 2 858 | 53 730 ✓ |
| Stars, last 30 days | +82 | +335 ✓ |
| Stable releases, 12 months | 18 ✓ | 11 |
| Latest release | v3.5.0 · 22 Oct 2026 ✓ | v6.06 · 5 Oct 2026 |
| Setup | Moderate | Moderate ✓ |
| Official Docker image | No | Yes ✓ |
| License | MIT | MIT |
| Main language | Typescript | Shell |

## Which one should you pick?

WindowsinDocker scores 83/100 against 63/100 for altcha, so it is the safer default.

altcha ships more often: 18 stable releases in the past year, against 11 for WindowsinDocker.

WindowsinDocker is growing faster right now (+335 stars in 30 days).

## Details

- [altcha](https://selfhost.directory/project/altcha) (markdown: https://selfhost.directory/project/altcha.md)
- [WindowsinDocker](https://selfhost.directory/project/windowsindocker) (markdown: https://selfhost.directory/project/windowsindocker.md)

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Source: https://selfhost.directory/compare/altcha-vs-windowsindocker