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
Allway Sync is a user-friendly, feature-rich synchronization tool best suited for Windows users seeking real-time sync with a straightforward interface. In contrast, Unison is an open-source, command-line based application that excels in bidirectional syncing across multiple platforms, making it ideal for users familiar with shell commands and looking for flexibility.