Unison

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

File synchronisation software · by Benjamin C. Pierce · cis.upenn.edu

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What Unison’s own pages say

What it says it doesis a file-synchronization tool for OSX, Unix, and Windows. cis.upenn.edu
PlatformsLinux, OS X, Solaris, Unix, Windows cis.upenn.edu
Free planYes cis.upenn.edu
Open sourceYes cis.upenn.edu
Licensefull source code is available under the GNU Public License. cis.upenn.edu

Each value is a quote AirStack found on the product’s own pages, read 2026-11-05. A missing field means AirStack has not found it on its pages.