ProFTPD is described as 'high-performance, extremely configurable, and most of all a secure FTP server, featuring Apache-like configuration and blazing performance' and is an app in the File Sharing category. There are more than 10 alternatives to ProFTPD for a variety of platforms, including Windows, Linux, BSD, Solaris and OpenPGP. The best alternative is FileZilla Server, which is both free and Open Source. Other great apps like ProFTPD are Microsoft IIS (Paid), vsftpd (Free, Open Source), Baby FTP Server (Free Personal) and Syncplify.me Server! (Paid).