| Tool | Description | Access/Download |
| QGIS | A free,comprehensive (analyzing and visualizing) open desktop GIS software. | Click here to Download |
| GRASS GIS | Geospatial data management, image processing, spatial modeling and visualization. | Click here to Download |
| CARTO | Online platform for analyzing and visualizing geodata including 3D mapping and harvesting twitter data (semi free). | Click here to Download |
|
World Map |
Open source system from Harvard for creating maps, uploading and downloading shapefiles and KMLs. |
Click here to Download |
