I know - but its almost as good!
http://www.freebsd.org/about.html
They both use ssh as the authentication/confidentiality mechanism, but the SFTP protocol is more versatile and based on the ftp protocol, while SCP is based on the rcp copy protocol.
SFTP allows the one connection to be used to list (and change) remote directories; SCP requires a separate connection to do functions other than copy.
http://www.cam.ac.uk/cs/filetransfer/compare.html