# ActivityWatch vs Stalwart Mail Server

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

| | ActivityWatch | Stalwart Mail Server |
|---|---|---|
| Score | 80/100 ✓ | 79/100 |
| Rank in category | #1 of 11 in Time Tracking | #2 of 16 in Mail Server |
| GitHub stars | 19 421 ✓ | 15 484 |
| Stars, last 30 days | +445 | +681 ✓ |
| Stable releases, 12 months | 13 | 31 ✓ |
| Latest release | v0.14.1 · 10 Oct 2026 | v1.0.1 · 28 Oct 2026 ✓ |
| Setup | Moderate ✓ | Moderate |
| Official Docker image | No | Yes ✓ |
| License | MPL-2.0 | AGPL-3.0-only AND LicenseRef-SEL |
| Main language | Python | Rust |

## Which one should you pick?

ActivityWatch scores 80/100 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 13 for ActivityWatch.

## Details

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