Siafu simulates individual agents and their context, from home to city-wide scenarios. As a developer, you use the API to write your simulation for the purposes of data-set generation, test or visualization, optionally hooking it to your own application.
DIVA-GIS is a geographical information system to analyze plant biodiversity data. It was developed at the International Potato Center (CIP) to help curate it's genebank data; additional support was subsequently obtained from IPGRI.