WS_FTP is a line of file transfer protocol client software prouced by Ipswitch, Inc. for the Windows operating systems. WS_FTP stands for WinSock File Transfer Protocol. The graphical user interface of WS_FTP has two-panes: the left pane is the local computer that the software is installed on and the right pane is the server being connected to. Recent versions of WS_FTP include the ability to customize the panes and to connect to multiple servers at the same time.