This software uses the zlib general-purpose compression library by Jean-loup Gailly and Mark Adler. The license is here: http://www.gzip.org/zlib/zlib_license.html
This software uses ftpparse library by D. J. Bernstein for parsing the output of FTP LIST command.
Brian W. Kernighan's AWK interpreter is included with this software for convenience only (great for writing external filters). It can also be downloaded from AWK home page: http://cm.bell-labs.com/cm/cs/awkbook/.