WinSCP is a popular free SFTP and FTP client for Windows. It offers an easy-to-use graphical user interface (GUI) for transferring files between a local and remote computer using protocols like FTP, SFTP, SCP, and WebDAV1. WinSCP also supports scripting and task automation, making it a powerful tool for efficient file management. With features like directory synchronization, integrated text editor, and support for various authentication methods, WinSCP is ideal for system administrators and developers.