The contrib/ directory contains third-party scripts, binaries and ProFTPD
modules. Such found here are completely unsupported by the ProFTPD team,
have not been tested and may or may not work as documented. In other words,
use at your own risk.

Contents:
-=-=-=-=-

xferstats.holger-preiss (BSD license, I think)

  A port of the infamous wu-ftpd xferlog perl analysis script, w/ bug fixes
  and some modifications. Useful for analyzing your /var/log/xferlog files. 
  See xferlog(5).

mod_ratio.c (GPL license)

  A third-party module which implements file/byte ratios in proftpd.
  To install, run:

    ./configure --with-modules=mod_ratio

  From the top-level source directory. See the comments at the top of
  mod_ratio.c for additional directives and usage.