Unison

Unison is a file-synchronization tool for OSX, Unix, and Windows.

GitHub stars
5,529
License
GPL-3.0
Latest release
v2.54.0
1 May 2026
Last commit
20 September 2026
Runs on
Debian packages, OCaml

Commits per month, last 12 months

98 commits

Replaces

Paid products Unison can stand in for.

How to self-host Unison

Unison runs on Debian packages and OCaml. The project's own install guide is the place to start; most people put it on a small server with Docker and a reverse proxy for HTTPS.

  1. Get a server: a home server, a VPS, or a managed app host.
  2. Install it the way the project's docs describe, usually with Docker Compose.
  3. Put it behind HTTPS and set up backups before you add real data.
  4. Update it regularly. Watch the project's releases.

New to self-hosting? Start with the beginner's guide.

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Questions

Is Unison free?

Yes. Unison is open source under the GPL-3.0 license, so you can use it without paying for a license. You pay only for the server it runs on.

Can I self-host Unison?

Yes. Unison runs on Debian packages and OCaml. Follow the install guide in the project's documentation, or use a host that installs it for you.

What does Unison replace?

People use Unison instead of Resilio Sync.

Is Unison still maintained?

The last change to Unison's code was on 20 September 2026, with 98 commits in the last 12 months.

Topics

File Transfer & Synchronization

App data from awesome-selfhosted (CC BY-SA 3.0), stars and activity from GitHub.