Smart FTP/SFTP Client with Advanced Folder Merging

The user is looking for an FTP client with a critical but missing feature: intelligent folder merging. This indicates a pain point for users who frequently synchronize complex file structures or manage website deployments where simple overwrites are insufficient. A SaaS offering could provide a highly specialized FTP/SFTP client or a file sync utility focused on robust merging algorithms, conflict resolution, and potentially version control. This would appeal to web developers, system administrators, and anyone dealing with detailed file synchronization needs beyond basic file transfers.