With EscaBooz.sage, you can use the SAGE [www.sagemath.org] formalism to specify a discrete differential problem that can be solved thanks to EscaBooz and InterCell.
The software, the theory behind it and the tutorial can be found here.
For installation :
install sage, preferably from source
download escabooz.sage from here
untar the archive in a directory of your choice :
Authors are :
for the sage/python part : Nicolas Fressengeas
for the C++ part : Hubert Frauensohn (Hubert.frauensohn .at. univ-metz.fr)