Unison
Unison is a file-synchronization tool for OSX, Unix, and Windows.
Description from awesome-selfhosted (CC BY-SA 3.0)
Still maintained? Yes: 10 commits in the last 90 days, latest release v2.54.0 (May 2026).
Comparisons in File Transfer & Synchronization: Dropbox alternatives, Google Drive alternatives, AWS S3 alternatives.
At a glance
Unison quick facts
- Health score
- 62/100 SLOWING
- Stars
- 5,563
- Last commit
- 1 month ago (Sep 2026)
- Latest release
- v2.54.0, May 2026
- Licence
- GPL-3.0
Top alternatives to Unison
In its own words
The project's README opens: "TL;DR: Do not ask questions or ask for help in issues. Upgrade to the latest release."
Why it ranks here
Health score explained
Unison scores 62/100, #12 of 20 in File Transfer & Synchronization: 10 commits in the last 90 days earn 11.7 of 35 points, the latest release (v2.54.0, 6 months ago) earns 24.9 of 25, 5,563 stars add 15.0 of 20, an active, unarchived repository keeps 10 and no advertised Docker image leaves the final 10 unclaimed. That places it in the slowing band (40 to 69). The biggest shortfall is commit activity, worth 23.3 more points.
Recomputed nightly from the GitHub API. How the score is calculated.
- Commit activity biggest shortfall 11.7 / 35
10 commits in 90 days (30+ scores full marks)
- Release recency 24.9 / 25
v2.54.0 released 6 months ago
- Stars 15.0 / 20
5.6k stars on GitHub (logarithmic)
- Not archived 10.0 / 10
Repository is active
- Docker support 0.0 / 10
No Docker support advertised
Commit activity
- 10
- Last 90 days
- 98
- Last 12 months
- 1 month ago
- Last push
Ranked #12 of 20 tools in File Transfer & Synchronization by health , between Cloudreve (#11) and Peergos (#13) .
Details
| Licence | GPL-3.0 |
| Platforms | deb, OCaml |
| Latest release | v2.54.0 · 6 months ago |
| Stars | 5,563 |
| Open issues | 92 |
| Docker | Not advertised |
| Repository | bcpierce00/unison ↗ |
Unison vs its top 5 alternatives
Active tools that share a category with Unison (File Transfer & Synchronization), scored on the same five terms.
Unison: common questions
Is Unison still maintained?
Unison had 10 commits in the last 90 days and its last push was 1 month ago; the latest tagged release, v2.54.0, is from 6 months ago. Repoly recomputes this nightly.