The following is a collection of HTML documentation for modules and
tools in the contrib/ directory of the ProFTPD source
distribution.
ftpasswd script
  AuthUserFiles and
      AuthGroupFiles
  
ftpquota script
  mod_quotatab module
  
mod_ctrls_admin module
  ftpdctl
      program.  Controls are covered in more detail in the
      Controls mini-HOWTO
  
mod_ifsession module
  proftpd.conf file
  
mod_load module
  
mod_quotatab module
  proftpd
  
mod_quotatab_file
      module
  mod_quotatab
      which handles quota tables that are stored in specially formatted files
      on disk
  
mod_quotatab_ldap
      module
  mod_quotatab
      which handles reading quota limits from LDAP directories
  
mod_quotatab_sql
      module
  mod_quotatab
      which handles quota tables that are stored in SQL databases
  
mod_radius module
  
mod_rewrite module
  
mod_site_misc module
  SITE commands such as
      SITE MKDIR, SITE SYMLINK, and
      SITE UTIME
  
mod_sql module
  
mod_tls module
  
mod_wrap module
  /etc/hosts.allow and
      /etc/hosts.deny files, or other allow/deny files,
      for IP-based access control.
  
mod_wrap2 module
  /etc/hosts.allow and
      /etc/hosts.deny files, or other allow/deny files,
      as well as SQL-based access rules, for IP-based access control.
  
mod_wrap2_file
      module
  mod_wrap2
      which handles access rules that are stored in specially formatted files
      on disk
  
mod_wrap2_sql
      module
  mod_wrap2
      which handles access rules that are stored in SQL database tables
  http://www.proftpd.org/lists.htmlIf you are looking to see if ProFTPD supports a particular feature, the first place to look as the complete list of configuration directives:
http://www.proftpd.org/docs/directives/linked/by-name.htmlThe list may be intimidatingly long, but it is well worth scanning through all of the directives to see everything that ProFTPD is capable of supporting.