What is “proftpd” Package?

Highly configurable GPL-licensed FTP server software
For more details: http://www.proftpd.org/

Installation

• Open Terminal by pressing command+space then type terminal and hit Enter key.
• Install homebrew first.

  ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)" < /dev/null 2> /dev/null

• Install proftpd.

  brew install proftpd

Now, use proftpd!