novi is a tool for finding the latest-version RPMs in a tree. It can be used to create Kickstart trees or yum repositories that contain the updated RPMS. In the case of Kickstart, this means machines come to life with the updates already applied. Using novi for a yum repository trims the size of the repodata files, which reduces client download and processing time.
Paco (pacKAGE oRGANIZER) is a simple, yet powerful tool to aid package management when installing programs from source code. It uses the LD_PRELOAD method to track package installations, and provides various options to keep the installed software organized. It's mainly a command line application but it has also an optional GTKMM interface.
pkg_db.pl generates a pretty-printed HTML list and statistics of packages installed via NetBSD pkgsrc. It creates 3 HTML files: one index, containing a list of all installed packages with short descriptions, one with the detailed description of the package, and one with a list of installed files. It requires pkg_info.
pkgusage lists all the packages you have installed on your system, along with a number telling you how many days ago you last accessed any of the files in the package. This could be useful for cleaning out your hard drive. Pkgusage works with RPMs and Debian packages, and is written to be easily portable to other package managers as well.