In this article, I want to look at a GIS option available for
Linux—specifically, a program called SAGA (System for Automated
Geoscientific Analyses). SAGA was developed at the Department of Physical
Geography in Germany. It is built with a plugin module architecture,
where various functions are provided by individual modules.
A very complete API is available to allow users to extend
SAGA's functionality with newly written modules. I take a very
cursory look at SAGA here and describe a few things you might want
to do with it.