http://www.FreeBSD.org/doc/en_US.ISO8859-1/books/handbook/ports.html - FreeBSD Handbook: Installing Applications: Packages and Ports http://www.FreeBSD.org/doc/en_US.ISO8859-1/books/porters-handbook/index.html - FreeBSD Porter's Handbook http://www.NetBSD.org/Documentation/pkgsrc/ - The pkgsrc guide http://www.OpenBSD.org/porting.html - Building an OpenBSD port http://www.OpenBSD.org/ports.html - OpenBSD Ports and Packages http://www.DragonFlyBSD.org/docs/goals.cgi#packages - DragonFly BSD Design Goals: Dealing with Package Installation http://www.Gentoo.org/doc/en/handbook/handbook-x86.xml - Gentoo Linux x86 Handbook: Working with Gentoo http://www.Gentoo.org/proj/en/devrel/handbook/handbook.xml - Gentoo Developer Handbook: Guides, Policies http://devmanual.Gentoo.org/ - Gentoo Development Guide http://www.Gentoo.org/proj/en/portage/index.xml - Gentoo Linux Portage Development http://www.Debian.org/doc/FAQ/index.en.html - The Debian GNU/Linux FAQ: Basics of the Debian package management system and other chapters http://www.Debian.org/doc/debian-policy/ - Debian Policy Manual http://www.Debian.org/doc/manuals/developers-reference/index.en.html - Debian Developer's Reference: Managing Packages, Best Packaging Practices and other chapters http://www.Debian.org/doc/manuals/maint-guide/index.en.html - Debian New Maintainers' Guide http://www.Debian.org/doc/manuals/apt-howto/ - APT HOWTO http://slacksite.com/slackware/packages.html - Slackware Package Management http://kitenet.net/~joey/pkg-comp/ - Comparing Linux/UNIX Binary Package Formats http://www.rPath.com/technology/techoverview/ - Repository-Based System Management Using Conary http://www.freestandards.org/en/LSB - Linux Standard Base http://www.pathname.com/fhs/ - Filesystem Hierarchy Standard http://www.rpm.org/max-rpm-snapshot/ - Maximum RPM (development snapshot) http://fedora.redhat.com/docs/drafts/rpm-guide-en/ - RPM Guide by Eric Foster-Johnson http://fedoraproject.org/wiki/Packaging/Guidelines - Packaging Guidelines by Tom 'spot' Callaway http://www.sepp.ee.ethz.ch/ - SEPP - Software Installation and Sharing System by Tobias Oetiker Last, but not least - dozens of Wikipedia articles on package management and related topics; over a hundred of manpages from BSD, Linux, Solaris and other operating system, as well as those coming with third-party tools; countless discussions in mailing-lists archives; popular interviews, memoirs, essays concerning package management.