EPM is a free UNIX software/file packaging program that generates
distribution archives from a list of files.
EPM Can:
o Generate portable script-based distribution packages  complete with
  installation and removal scripts and  standard install/uninstall GUIs.
o Generate "native" distributions in AIX, BSD, Debian,  HP-UX, IRIX, MacOS X,
  Red Hat, Slackware, Solaris, and  Tru64 UNIX formats.
o Provide a complete, cross-platform software  distribution solution for
  your applications.

WWW: http://www.epmhome.org/