rsync - rsync is a file transfer program for Unix systems. rsync uses the "rsync algorithm" which provides a very fast method for bringing remote files into sync.
Truck - A faster alternative to FTP
FreeFileSync - FreeFileSync is a free open source data backup software that helps you synchronize files and folders on Windows, Linux and macOS.
csync - csync is a lightweight utility to synchronize files between two directories on a system or between...
GoodSync - GoodSync provides highly reliable file backup and synchronization for both individuals and businesses.
Synchromat - Synchromat is file and folder synchronization software for Windows.