FTP stands for File Transfer Protocol. It is an application layer protocol.
FTP can be combined with cryptographic protocols. Information related to such protocols (Explicit FTPS, Implicit FTPS, FTP over SSH) should also be submitted to this category.
Bear in mind that SSH File Transfer Protocol (also known as Secure File Transfer Protocol, Secure FTP, or SFTP) is not an extension of FTP, but of SSH.
Search engines that index the content of FTP sites.
Companies that provide FTP services exclusively.
Take a look a Computers/Internet/Web_Design_and_Development/Hosting before submitting your site to this category.