Viking is a free/open source program to manage GPS data
Geographic feature extraction and data mining
A software package for quantitative analysis in Panbiogeography
Tool to work on map data, to check the data and generate your own maps
A GUI for the freeware Geographical Information System PCRaster
A software gps simulator
a space-time interpolation geostatistical tool
Multiplatform Ham Radio APRS and Mapping Program
QNetMap is the library for displaying the map and the objects on it
LGPL GML parser
Geospatial Distributed Version Control System