1)   ComparatorPro 3.20
ComparatorPro will compare files, folders and sub-folders to quickly update backup set before you get down to some serious work. It can easily sync the files to ensure a perfect match. This comparison utility will compare and verify your files...
file comparison, compare file, compare files, compare directory, file compare, files compare, file comparison, file backup, comparing files, compare folder,

 2)   ViceVersa PRO 2.0
Windows File Synchronization, File Replication and Backup Software. ViceVersa PRO delivers an easy way to backup, mirror, replicate and synchronize files and folders. ViceVersa works with any type of storage media on laptop, desktop, servers.
File Synchronization, File Replication, File Backup, Backup Software, File Mirroring, File Distribution, Folder Synchronization, Synchronize Files, Synchronize Folders,

 3)   TreeNetCopy 2.0
TreeNetCopy is a tool that provides file mirroring between Windows NT/2000 boxes using TCP/IP. This utility is designed to replicate repository resources.
ftp, mirror, directory replication, replication, transfer, high availability, ha, file replication, replica, side,

 4)   FileReplicationPro 4.3.12
Cross-platform file replication and synchronization. Used for secure off-site backup, sync of satellite offices and distribution of content. Bandwidth efficient for real-time or scheduled replication of large files and large numbers of files
File Replication, File Sync, File Synchronization, Backup, off-site backup, disaster recovery, cross platform replication, content synchronization, byte-level, mirroring,