"EPM is an open source UNIX software and file packaging program that generates distribution archives from a list of files. EPM provides a complete, cross-platform software distribution solution for your applications.

ESP generates both native and "portable" script-based distribution packages complete with installation and removal scripts and standard install/uninstall GUIs. The installers can be customized with product logos, "readme" files, and click-wrap licenses as desired.

* Creates software packages that can be distributed on disc or over the Internet!

* Supports AIX, Debian GNU/Linux, FreeBSD, HP-UX, IRIX, Mac OS X, NetBSD, OpenBSD, Red Hat Linux, Slackware Linux, Solaris, and Tru64 UNIX.

* Provided as free software under the GNU General Public license."

http://www.epmhome.org/