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ESP Package Manager (EPM)

What is EPM?

EPM is a simple cross-platform tool that generates software and patch distributions in various formats from a list of files. Supported formats include:

  • BSD packages ("pkg_create")
  • Debian Package Manager ("dpkg")
  • macOS software packages ("name.pkg")
  • Portable (installation and removal scripts with tar files)
  • Red Hat Package Manager ("rpm")

EPM also includes graphical "setup" and "uninstall" programs that can be provided with your distributions to make installation and removal of more than one package a snap. The installers can be customized with product logos, "readme" files, and click-wrap licenses as desired.

EPM is provided as free software under version 2 of the GNU General Public license.

Note: Future versions of this software will be maintained and developed by Jim Jagielski.

How Do I Compile EPM?

See the file for more info on that.

How Do I Use EPM?

Please look at the EPM manual. A preformatted copy is included with the source archive in the file doc/epm-book.html.

An example EPM software list file is provided with this distribution in the file epm.list.

Do I Have to Pay to Distribute Software Using EPM?

No! EPM is free software and any installations you create are unencumbered by licensing of any kind, not even the GPL.

What's New in EPM?

See the file for change information.


The official home page for EPM is

Report all problems and submit all patches/pull requests using the Github issue tracking pages at

Legal Stuff

EPM is Copyright © 1999-2020 by Michael R Sweet. All rights reserved.

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.