EBA:FTP Sync 

EBA:FTP Sync component is an ActiveX Component that provides a simple interface for synchronizing files and folders between client and server running an FTP Service. Great solution for both client-side applications and embedding in server-side script
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Visual Batch File 

Fast Backup/Synchronization program that is easy to use. Restore your backups with one click. Friendly user interface using drag and drop. Support for network and removable drives. Files can be backed up incrementally. Synchronize computers.
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