Clam Shell is a simple shell, designed to be a testbed for user interface ideas. It is a modular shell where the modules can be loaded or unloaded at runtime to expand or contract the functionality of the shell. This lets each user have a set of tools that they like to use, rather than one monolithic shell.
PicBook automatically produces a photo album in HTML format of your scanned images or photographs. It come with automatic image processing, slideshow, transition effects, and other nifty features. It is easy to customise with its configuration file and HTML-templates. PicBook is a Bourne shell script and therefore should run on any Unix or Linux system. It requires the standard grep and awk commands, which should be available on most systems. Additionally, it needs the "convert" and "identify" commands from the ImageMagick package to handle images.
Runmaint is a shell script for invoking regular jobs. It delivers the output (if any) via mail with a meaningful subject line to the people of your choice. It moves all the complexity from the crontab into an easily managed collection of scripts. Runmaint expects to be run out of cron.
A simple and trivial to use utility for keeping various 3rd party application packages installed on multiple machines. It leaves flexibility for making packages local to a host or remotely served from a central server. It is not the same sort of tool as RPM; rather it serves a related but different purpose. In particular, unlike most package systems, it can run independently of your main system (RPM, pkgadd, etc) and lets you install multiple versions of an appplication at the same time.
xtctl is a script for setting/changing xterm properties. It can change the foreground, background, cursor, and mouse colours of an XTerm window, and the icon and background image (only known to work with Eterm). xtctl can also modify the window's title, icon name, highlight background, font, size, position, z-order (raise and lower), and iconified/restored status. There are experimental options for full and soft reset.