An SFTP Client is a software application that allows users to securely transfer files over a network using the SSH File Transfer Protocol (SFTP). It provides a user-friendly interface for uploading, downloading, and managing files on remote servers. SFTP ensures that data is encrypted during transmission, making it a safer option compared to traditional file transfer methods. These clients are commonly used by web developers, system administrators, and businesses to manage files on servers. Popular SFTP Clients include applications like FileZilla, WinSCP, and Cyberduck, which support various operating systems and offer features like drag-and-drop functionality and directory synchronization.