File Transfer Protocol "FTP is a file transfer protocol for exchanging and manipulating files over a TCP computer network. A FTP client may connect to a FTP server to manipulate files on that server. As there are many FTP client and server programs available for different operating systems, FTP is a popular choice for exchanging files independent of the operating systems involved."
Download a FTP client like Filezilla or CoreFTP. It basically does what its name says- file transfer. You could upload new files, change their permissions, download or delete them for example.