QGIS
Neo 4j
The Open Graph Viz Platform
Spatial Analysis Along Networks
Postgre SQL
GeoDa Spatial Data Analysis
NASA World Wind
Crime Stat
SaTScan
GeoSurveillance
BioMed - Cancer Atlas Viewer
Tilegrams
GGobi Visualization
Cython: C Extensions for Python
GeoDa
Geographically Weighted Regression