FileZilla: Allows file transfer using both FTP and encrypted FTP, such as FTPS (server and client) and SFTP. WinSCP: A free and open-source SFTP file manager for Windows.

For Windows, macOS, and Linux Installation methods vary by operating system. For Windows, Gpg4win provides a comprehensive suite. On macOS, GPG Suite is a popular choice, and most Linux distributions ...

In technical terms, DeltaCopy is a "Windows Friendly" wrapper around the Rsync program, currently maintained by Wayne Davison. "rsync" is primarily designed for Unix/Linux/BSD systems.