Media Shuttle - The Easiest and Most Reliable Way to Send Any Size File, Anywhere, Fast.
Resilio Connect - Resilio Connect is a scalable and centrally managed solution, to efficiently move data.
GoodSync - GoodSync provides highly reliable file backup and synchronization for both individuals and businesses.
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.
RoboCopy - Robocopy is a free file copy tool that is included with the Microsoft Windows operating system. It allows one to construct complicated instructions to move, or copy files.
SureSync - SureSync is a rich-featured data management solution that offers you flexible or powerful file synchronization and replication.