1)   PowerFolder 3.0.0
PowerFolder is a free tool to synchronize,backup,transfer,access and share files over the internet or local network. It can be used to exchange every type of data, for example - documents, photos, music, videos or project files.

 2)   AJC Directory Synchronizer 2.4.9
AJC Directory Synchronizer makes it easy to synchronize files and compare folders between any two locations. Synchronize large numbers of files between computers, sync laptop to desktop, mirror to backup drive, sync mp3 player etc.

 3)   Auto FTP Manager 4.16
Auto FTP Manager is a powerful FTP client that connects to any FTP server and transfers files automatically. You can schedule transfers, synchronize directories a with simple drag-and-drop interface, or control it from the command line.

 4)   Auto FTP Free 3.59
Upload and download files and synchronize directories easily with Auto FTP Free. Automate file transfers, transfer only files of a certain type or based on modification date. Schedule transfers to happen automatically!