Gcolor2 is a simple, standalone GTK+ 2.0 color selector.
A bundle over 100 handy scripts for The Gimp.
gphoto2 is a command-line frontend to libgphoto2.
A screen saver module which bounces a line around the screen.
I originally submitted this as a kernel module, but after
seeing George Reid's plasma-kmod port I realised that was
a better way to do it.
libgxps is a GObject based library for rendering XPS documents.
A parser for SVG content in files or buffers
Gtk+ frontend for UniConvertor - a universal vector graphics
translator.
A complete Python wrapper for the Google Chart API
pygal is a dynamic SVG charting library written in python.
pySVG is a pure Python library to create SVG documents.