Alien
- Converts between the RPM, Debian DEB, Stampede SLP, and Slackware TGZ package formats. Downloads, documentation, CVS, and a ChangeLog provided.
- http://kitenet.net/~joey/code/alien.html

Kpackage
- A graphical package manager for RPM and Debian packages for KDE. Downloads, documentation, and screenshots provided.
- http://docs.kde.org/development/en/kdeadmin/kpackage/

autopackage
- Autopackage is a set of tools for building low overhead, distribution-neutral packages, distributing them, and installing using with a variety of front-ends. Downloads, documentation, CVS, listservs, TODO, and a ChangeLog provided.
- http://autopackage.org/

Encap archive
- Encap archive site for the package management software.
- http://encap.cso.uiuc.edu/

GNU Stow
- Manages the installation of software packages, keeping them in separate directories while making them appear to be installed in the same place. Downloads, ChangeLog and a manual provided.
- http://www.gnu.org/software/stow/

GNUpdate
- A universal, cross-distribution package management and automatic update tool for Linux. Downloads, documentation, listservs, CVS, and a TODO are provided.
- http://www.gnupdate.org/

EPM
- A packaging program that generates distribution archives from a list of files. Downloads, documentation, CVS, FAQ, and newsgroups provided.
- http://www.easysw.com/epm/

Graft
- Provides a mechanism for managing multiple packages under a single directory hierarchy. Downloads and a manual provided.
- http://www.gormand.com.au/peters/tools/