lt is a package management tool which can be used to install, query, check, update and remove software packages. Each package is located in its own directory, then symbolic links are used to make package files accessible in traditional common location (/usr/local). No database is used, and lt is simple and stateless.
makeself is a small shell script that generates a self-extractable compressed TAR archive from a directory. The resulting file appears as a shell script, and can be launched as is. The archive will then uncompress itself to a temporary directory and an arbitrary command will be executed (for example, an installation script). This is pretty similar to archives generated with WinZip Self-Extractor in the Windows world.
mnsetup is a script that helps you set up mail and news on a Slackware system or other Linux system. It will set up the "fetchmail" mail client, the "mutt" or "pine" mail readers, and the "tin" or "slrn" news readers. The script will prompt you for your username, password, and email address. You need to have the "dialog" program installed to run mnsetup.
Mpkg is a ports collection. Each port contains the information necessary to automatically download, compile, and install a specific program, and also information about dependencies between programs. Ports collections are common on various BSD flavors, but mpkg is designed to be portable to any UNIX-like system. Development has been done on DEC OSF/1, GNU/Linux, and Solaris. Mpkg also tries to install all programs in separate directories, never touching the common directories like /usr and /etc.
mrepo (formerly known as Yam) builds a local APT/Yum RPM repository from local ISO files, downloaded updates, and extra packages from RHN (Red Hat Network) and 3rd party repositories. It takes care of setting up the ISO files, downloading the RPMs, configuring HTTP access, and providing PXE/TFTP resources for remote installations. It was primarily intended for doing remote network installations of various distributions from a laptop without the need for CD media or floppies, but is equally suitable for an organization's centralized update server.