Free: WinSCP SFTP / FTP client for Windows
WinSCP is an open source SFTP/FTP client for the Windows platform that is simple to use. I prefer WinSCP over other clients because of it’s simple interface and the emphasis on secure file transfers with support for SFTP, SSH, SCP and FTP. The built-in text editor makes editing remote files even easier. 
I like WinSCP simplicity, open source nature, and support for SFTP. There are plenty of file transfer clients to choose from, some do too much and others too little. WinSCP strikes a balance between the two which makes it my favorite option for a Windows client.
Features
- 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
ftp, sftp, winscp — Apr 2, 2010