Unison is a straightforward file-synchronization application for Mac OS X that helps you to create two replicas for the same files and save them on different hosts. You can synchronize the contents of two folders by furnishing extensive control over the synchronization direction for each file. So you can work on a set of files, by backing up important files to a different location and select to mirror the changes. It has a minimalist GUI, but you can also install a command line tool if you want to sync files to a remote location. In the primary window, you can define an unlimited number of folder pairs to synchronize faster. You can use the Unison Rescan tool for the program to find the changes in the root folders. As a next step, set up the synchronization direction and start the transfer manually. If a specific file has been updated in both root folder and the content is not identical, it points out the conflict. The program can handle non-conflicting files automatically and resolves “false conflicts” on its own. The program facilitates you to choose the sync direction for each file and identifies possible conflicts.