Spatial Statistics Libraries & Tools for GeoTools, GeoServer, uDig
Builds Garmin maps from OpenStreetMap
Open Source Desktop GIS with Surveying and Cartography Functionality
Workflow and set of tools for Automated Imagery Classification
Geostatistics and geosciences modeling software
The full-featured, easy-to-use desktop GIS with real processing power!
MorphoLim : identifying city boundaries
Source code for ArcGIS Viewer for Flex - a great application framework
A frontend for gpsbabel
Geomatics & mapping tools for the masses!