GraphicsMagick provides a set of commandline tools and programming APIs for manipulating, editing, and converting raster and vector images. It is derived from ImageMagick, with the objective of providing better stability and performance than ImageMagick while retaining the original MIT/X11 license.
TyGeMo is a Tcl/Tk based front-end to the digital camera software, photopc (http://photopc.sourceforge.net). Its goal is to provide all the funtionality of the commandline based photopc in a user friendly GUI application.