Gentoo Linux is a versatile and fast Linux distribution for x86, PowerPC, Sparc, and Sparc64 that's geared towards Linux power users. Unlike other distros, it has an advanced package management system called Portage. Portage is a true ports system in the tradition of BSD ports, but is Python-based and sports a number of advanced features including dependencies, fine-grained package management, "fake" (OpenBSD-style) installs, path sandboxing, safe unmerging, system profiles, virtual packages, config file management, and more.
INSERT (the Inside Security Rescue Toolkit) aims to be a multi-functional, multi-purpose disaster recovery and network analysis system. It boots from a credit card-sized CD-ROM and is basically a stripped-down version of Knoppix. It features good hardware detection, fluxbox, emelfm, links-hacked, ssh, tcpdump, nmap, chntpwd, and much more. It provides full read-write support for NTFS partitions (using ntfs-3g), and the ClamAV virus scanner (including a fairly recent signature database and a GUI). It provides partition handling with gParted and also has a network boot facility.
toast is a simple package manager for Unix. It automatically locates and downloads source code, determines how to compile it, installs each package in its own directory tree, and makes the resulting binaries available through an encap/GNU stow-like symlink tree. It also supports binary packages. It is often used to install and manage software in a non-root user's home directory.
XPKGTOOL is a GUI front-end for pkgtools that allows you to manage, install, remove, and upgrade packages with ease, through a nice and user friendly X-based interface. It comes with a built-in update manager, called SlackGrade, that will help you to keep your Slackware system up to date, checking, downloading, and upgrading the system with the latest packages available from the main Slackware distribution sources on the Web.
UniPackage is an alternative to distribution-specific packaging systems like dpkg and RPM. UniPackage is a simple system that works on any Linux distribution. UniPackage packages are tar.bz2 archives which contain a self-contained "AppDir" which can be moved anywhere in the filesystem without disturbing the application's installation. In most cases, this packaging does not require changes to the application's code. The issue of dependencies is avoided by bundling all required libraries in the AppDir.
mkpkg is a small toolkit for automatically building Slackware or OpenLab packages. It should work on most packages that contain a makefile. It follows Slackware standards and is intended to build packages acceptable for linuxpackages.net. After you type the description, it generates a correctly formatted slack-desc file and logs configure options.