# cobalt vs Serendipity

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

| | cobalt | Serendipity |
|---|---|---|
| Score | 83/100 ✓ | 53/100 |
| Rank in category | #1 of 45 in Download Management | #7 of 24 in Blogging |
| GitHub stars | 45 597 ✓ | 229 |
| Stars, last 30 days | +1 787 ✓ | +0 |
| Stable releases, 12 months | 0 | 2 ✓ |
| Latest release | — | 2.6.1 · 22 Jul 2026 |
| Setup | Easy ✓ | Moderate |
| Official Docker image | Yes ✓ | No |
| License | AGPL-3.0 | BSD-3-Clause |
| Main language | Svelte | PHP |

## Which one should you pick?

cobalt scores 83/100 against 53/100 for Serendipity, so it is the safer default.

Serendipity ships more often: 2 stable releases in the past year, against 0 for cobalt.

If you want the quickest setup, cobalt is easier to run; Serendipity needs more configuration.

cobalt is growing faster right now (+1 787 stars in 30 days).

## Details

- [cobalt](https://selfhost.directory/project/cobalt) (markdown: https://selfhost.directory/project/cobalt.md)
- [Serendipity](https://selfhost.directory/project/serendipity) (markdown: https://selfhost.directory/project/serendipity.md)

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Source: https://selfhost.directory/compare/cobalt-vs-serendipity