LibUFO is a C++ core library for graphical user interfaces (GUI). It is mainly used as OpenGL GUI toolkit. Most standard components (such as buttons, labels, menus, and internal frames) are included. It is customizable via look-and-feel and themes. There are three built-in video drivers (respectively using GLX/X11, WGL/Win32, and LibSDL) which are selected and loaded at run-time. You may also create your own backend or use a dummy driver to include libUFO widgets into an already existing OpenGL context.
proconfig is a Linux kernel patch which lists the running kernel's compilation options in /proc/config. This makes kernel image administration easy if you compile a lot of kernels or admin a lot of machines. The code is compiled as a kernel module by default. The patch integrates with the kernel Makefiles, so it shows up conveniently under make menuconfig and friends.
Spackle is designed to be a flexible client/server architecture for the gathering and displaying of statistics, primarily suited to monitoring servers. It's written in PHP and bash shell script, uses RRDtool for stats logging and graphing, and PostgreSQL or MySQL for the server-side database.