# Concat vs Unison

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

| | Concat | Unison |
|---|---|---|
| Score | 82/100 ✓ | 65/100 |
| Rank in category | #1 of 18 in Video Processing | #2 of 15 in File Sync |
| GitHub stars | 12 510 ✓ | 5 559 |
| Stars, last 30 days | +2 511 ✓ | +65 |
| Stable releases, 12 months | 6 ✓ | 2 |
| Latest release | v0.2.8 · 20 Oct 2026 ✓ | v2.54.0 · 1 May 2026 |
| Setup | Easy ✓ | Moderate |
| Official Docker image | No | No |
| License | AGPL-3.0 | GPL-3.0 |
| Main language | Rust | OCaml |

## Which one should you pick?

Concat scores 82/100 against 65/100 for Unison, so it is the safer default.

Concat ships more often: 6 stable releases in the past year, against 2 for Unison.

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

Concat is growing faster right now (+2 511 stars in 30 days).

## Details

- [Concat](https://selfhost.directory/project/concat) (markdown: https://selfhost.directory/project/concat.md)
- [Unison](https://selfhost.directory/project/unison) (markdown: https://selfhost.directory/project/unison.md)

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Source: https://selfhost.directory/compare/concat-vs-unison