Apple File Protocol (AFP)
The Apple File Protocol (AFP), more correctly called the AppleTalk Filing Protocol, is to Apple systems what NFS is to Linux/UNIX systems, and SMB or CIFS is to Windows Systems. It is a protocol through which the file system on remote computers can be accessed. AFP is not widely used outside of Apple networks, and unless you are working on networks that use Apple Macintosh systems, you are unlikely to encounter AFP.