csync - csync is a lightweight utility to synchronize files between two directories on a system or between...
CodeWeavers CrossOver - Don't buy a Windows license, don't reboot and don't use a Virtual Machine. Try a free trial of CrossOver to run your Windows software on Mac, Linux and Chrome OS.
Synchromat - Synchromat is file and folder synchronization software for Windows.
Cautoh - Turn your phone into a breathalyzer
Truck - A faster alternative to FTP
arRsync - arRsync is a tool that is designed for macOS that is used for transferring and synchronizing files between a computer and a storage drive.