depfinder finds the dependencies of Slackware packages. The dependency list can be output to stdout, to a .dep text file without version information, or to a slack-required file with version information. depfinder is very fast; its speed is mainly due to the C++ code that is used in depfinder to find in which package each individual library is included. It also has support for running multiple jobs, which makes it a lot faster when used with multiple CPUs/cores. depfinder supports detecting dependencies of binary files compiled with languages such as C or C++ and it can also detect Python dependencies.
slkbuild is a script inspired by makepkg from Arch that greatly simplifies the package building process in Slackware and derivatives. It parses an easy-to-create SLKBUILD meta-file and from that creates a conventional build script that follows all of the Slackware packaging standards and that can be run on its own. The advantage of using slkbuild is that it ensures package uniformity and allows for an easy-to-edit meta-file in the event that one might require customization or might need to update the script for new releases. It also makes the build process much quicker, since it takes care of downloading the source, untarring, gzipping man and info pages, stripping binaries, making sure that the menu entry for a graphical application is compliant, as well as a host of other things.
Twapake is a system administration utility for Slackware and Slackware-based operating systems only, making it easier to manage last installed packages and see the installation date of a package. It can print a simple list of N packages sorted by installed date to STDOUT. It can print a snapshot logfile to the /var/log/twapake/ directory. A snapshot is a list of all packages sorted by installed date at T time. The installed date is printed too, making it easier to see when a package has been installed on your system. You can remove the last N installed packages, print the packages installed since a chosen date, and launch a Curses User Interface for easy removal.