File Transfer Protocol (FTP) is an Internet standard where files are exchanged between two computers connected to the Internet. FTP is an Internet application that utilizes the Transfer Control Protocol/Internet Protocol (TCP/IP) protocols in moving the files between the sender and the receiver.
Common usage of the FTP is transferring a web page created by the developer to the computer which acts as the network server. The network server in turn displays the web page on the computer of the user that accessed it. This is basically how files move within the World Wide Web. There are many commercial FTP programs on the Internet that you can buy or you can also search for free FTP programs.
Source: searchnetworking.techtarget.com