An FTP (File Transfer Protocol) Client is software used to transfer files between two computers over the Internet. Transferring can be as easy as dragging-and-dropping files from one pane to another - one pane displaying files on your own computer, the other displaying files on the remote computer, or server. In terms of hosting, an FTP Client is used to upload Web page files onto a host's server. There are many FTP Clients available on the internet. A popular, free FTP Client is Filezilla.