WinSCP - Secure file transfer

WinSCP is an open source free SFTP client, FTP client, WebDAV client and SCP client for Windows. Its main function is file transfer between a local and a remote computer, you can easily upload your web site.
Beyond this, WinSCP offers scripting and basic file manager functionality.

If you are building a new web site  WinSCP can help you securely upload your web site, it allows secure file transfers between the client's local computer and the remote server, also it allows you to automatically backup your web site files in easy way.

Basic Tasks

• Upload files to FTP/SFTP server
• Synchronize files with FTP/SFTP server
• Upload my web site
• Exchange files over Internet
• Connect and transfer files securely 

Features:

• Graphical user interface
• Translated into many languages
• Integration with Windows (drag&drop, URL, shortcut icons, jump list)
• All common operations with files
• Scripting/Automation
• Cloud Computing
• Support for SFTP and SCP protocols over SSH and FTP and WebDAV protocols
• Batch file scripting and command-line interface and .NET assembly for advanced programming tasks
• Directory synchronization in several semi or fully automatic ways
• Integrated text editor
• Shares site settings with PuTTY
• Support for 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 protects stored site information with master password
• Optionally supports portable operation using a configuration file in place of registry entries, suitable for operation from removable media

Download:
WinSCP