Zeta Desktop Environment (ZDE) is an X11 window manager and tools with enhanced usability and features for advanced users and developers. Some of its current sub-projects include imp, a library of core functions such as linked lists, zwl, a simple widget toolkit and light X11 wrapper, and zimwm, the window manager.
Books stores, sorts, and searches a "virtual card catalog" for a personal library. It makes it simple to enter new books, edit the information of older books, and sort the books by attributes such as title and author. Books also includes built-in searching for quick book information retrieval, and XML support for importing and exporting collection information in HTML and XML.
Nageographer is a graphical utility to aid in positioning icons on the status display maps in Nagios (a network monitoring tool). Nagios, as shipped, requires you to enter coordinates for each icon you want displayed on the status map. This utility lets you drag the icons around where you want them and will save your coordinates back to the config file for you.
SLOCCount is a suite of programs for counting physical source lines of code (SLOC) in possibly large software systems. It can count physical SLOC for a wide number of languages. It can take a large set of files and automatically categorize their types using a number of different heuristics, and also comes with analysis tools.