WinSCP is an open source free SFTP client and FTP client for Windows. Legacy SCP protocol is also supported. Its main function is safe copying of files between a local and a remote computer.

• Graphical user interface
• Translated into several languages
• Integration with Windows (drag&drop, URL, shortcut icons)
• U3 support
• All common operations with files
• Support for SFTP and SCP protocols over SSH-1 and SSH-2 and plain old FTP protocol
• Batch file scripting and command-line interface
• Directory synchronization in several semi or fully automatic ways
• Integrated text editor
• Support for SSH password, keyboard-interactive, public key and Kerberos (GSS) authentication
• Integrates with Pageant (PuTTY authentication agent) for full support of public key authentication with SSH
• Explorer and Commander interfaces
• Optionally stores session information
• Optionally supports portable operation using a configuration file in place of registry entries, suitable for operation from removable media

Read about project history.