The IPX Gimp Plugins package contains many plugins
for the Gimp that are geared towards image
analysis, such as image sharpening, edge
detection, region growing, and a number of
gradient-fu is a patch for the GIMP that exposes the functionality of the gradient editor to scripts and plug-ins. It creates entries in the GIMP PDB for all the common gradient editing routines.
A text-to-speech GTK+ frontend for eSpeak and mbrola.
A Python parallel code library.