A group of clever coders & compilers have released a free (permaculture app) available for download, this little app will enable us to get rid of monoculture once & for all.
https://play.google.com/store/apps/details?id=com.conduit.app_f41a435b33...
Perhaps we need a few renewable energy apps as well, keep a look out for them . . .
Geography:
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Here is another app that can be used for permaculture
http://code.google.com/p/cropplanning/