slapt-get is an APT-like system for Slackware package management. It allows you to search Slackware mirrors and third-party package sources (such as www.linuxpackages.net) for packages, compare them with installed packages, and install new packages or upgrade installed packages, all with a few simple commands.
Stash is a package manager for non-root users. It makes it easier for you to install, track, and maintain packages and modules in your home directory. It does this by detecting the type of package or module you are installing and passing all the correct command line arguments to the relevant configure scripts and/or makefiles. It is extensible via custom packages, and tracks both architecture dependent and independent packages in separate directories so that they can be shared across systems. Package tracking uses symlinks in a manner similar to GNU stow. It supports autoconf, Perl and Python modules, imake (xmkmf), PMK, and many custom packages.
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.
BitRock InstallBuilder allows you to create easy-to-use multiplatform installers for Linux (x86/PPC/s390/x86_64/Itanium), Windows, Mac OS X, FreeBSD, OpenBSD, Solaris (x86/Sparc), IRIX, AIX, and HP-UX applications. The generated application installers have a native look-and-feel and no external dependencies, and can be run in GUI, text, and unattended modes. In addition to self-contained installers, the installation tool is also able to generate standalone RPM packages.
KDE Disk archiver is a disk-based archiving and backup utility. It can perform differential backups, which means that it can quickly store the differences between a recent full backup and the current state of your data. An archive browser easily allows you to view the "table of contents" of your archive. A sophisticated file filtering mechanism allows you to select which files and directories to backup or restore, and which files to compress. The table of contents can be extracted from the archive and used as a reference when making differential backups, which means you don't need your archive CDs handy to do a differential backup of the entire filesystem.
The main goal of autopkg.pl is to build software and make a Slackware package without having to make a build script of some kind. A single config file can specify the compile-time options for every program compiled with autopkg.pl. The packages are created in their own build directories and never installed unless you want them installed. A setuid-root wrapper allows normal users to create packages (with proper user/group listings and permissions) and optionally install them depending upon a list of trusted users. Optional "hint files" can also help a broken or not-that-well-set-up package to be compiled and packaged properly (samples included).