spade.pygooglechart: pygooglechart - A complete Python wrapper for the Google Chart API
spade.pyparsing: pyparsing module - Classes and methods to define and execute
parsing grammars
spade.pyratemp: Small, simple and powerful template-engine for python.
spade.pyxf: Python interface to XSB Prolog, SWI Prolog, ECLiPSe Prolog and
Flora2 by Markus Schatten <markus_dot_schatten_at_foi_dot_hr>
Faculty of Organization and Informatics, Varazdin, Croatia, 2011