“Simple File Transfer Protocol” is method of transferring simple files from one computer to another in an easy, yet, insecure fashion. It is sometimes confused with SSH file transfer protocol, a secured file transfer protocol, also abbreviated as SFTP, a similar operation that adds security to the transfer.
Cyberduck is an open source client for FTP and SFTP, and is available for Mac OS X and Windows. It supports secure transfers as well as directory synchronization. The user interacts with the user interface, including file transfer by drag and drop and notifications via Growl. It is also able to open some files in external text editors. Cyberduck includes a bookmark manager and supports Apple’s Keychain and Bonjour networking.
FileZilla is free, cross-platform FTP application software, consisting of FileZilla Client and FileZilla Server. It is available for Windows, Linux, and Mac OS X. It features an easy to use two-sided interface, one side being the local file system and the other being the server. Users can drag and drop files between the two. Filezilla can also save profiles for connections you frequently use.
It supports FTP, SFTP, and FTPS (FTP overSSL/TLS). Support for SFTP (SSH File Transfer Protocol) is not implemented in FileZilla Server.
WinSCP (Windows Secure CoPy) is an open source free SFTP, SCP, FTPS and FTP client. Its main function is file transfer between a local and a remote computer. WinSCP offers scripting and basic file manager functionality. Available only for Windows devices.