[en] PureFTPd Manager is a simple Cocoa frontend to PureFTPd, "a free (BSD), secure, production-quality and standard-conformant FTP server based upon Troll-FTPd", for Mac OS X.
CRUSHFTP.COM
CrushFTP
[en] CrushFTP4 is a powerful file server well ahead of its time. Not only does it handle serving FTP, but it also does SFTP (SSH FTP), FTPS (FTP over SSL), HTTP, HTTPS, WebDAV, and WebDAV SSL.
