Unison is a file-synchronization tool for OSX, Unix, and Windows. It allows two replicas of a collection of files and directories to be stored on different hosts (or different disks on the same host), modified separately, and then brought up to date by propagating the changes in each replica to the other. Developed by Benjamin C. Pierce
License: Open Source
Qtd Sync is known for its speed and efficiency, making it ideal for quick transfers and user-friendly operations. In contrast, Unison offers robust bi-directional sync capabilities and is highly configurable, making it suitable for more complex synchronization tasks.