pmcyg can create customized collections of Cygwin(TM) packages. pmcyg takes a user-supplied list of Cygwin package names, and downloads only them and their dependencies from a Cygwin mirror, e.g. to create a portable off-line installer on CDROM, DVD or USB flash.
For the latest releases please visit https://github.com/rwpenney/pmcyg
Offline DVDs software repository builder for Ubuntu and derivatives
Easy Repo is a GUI tool for create APT repository on DVD disks for your Debian/Ubuntu system. It can be usefull to use Ubuntu Software Center without an internet connectivity. Program is written in python/GTK+ and considered to be portable to win/mac as well.
Semi-universal package manager currently for Debian-based distros, soon to be for FreeBSD, portable to other distros. Officially part of AnjaliOS, formerly of Phantom Linux.
A cross-platform consolidation of the BSD tools for managing source packages from download to install. UniversalPorts follows the FreeBSD ports system as closely as possible whilst still being portable.