Viking is a free/open source program to manage GPS data
Toolkit for working with and mapping geospatial data
GPS track editor for editing tracks and planning (multiple) day tours
A software package for quantitative analysis in Panbiogeography
Geographic feature extraction and data mining
An information system for cyclists in Berlin and Brandenburg
A project on topography and weather comparison
Tool for assessment of environmental services on farm scale.
Tool to work on map data, to check the data and generate your own maps
A GUI for the freeware Geographical Information System PCRaster
Offline vector map display ported from OsmAnd
Plugins for OpenCPN
Geodesy based library (geodetic and geocentric functions)
A software gps simulator
Korean Spatial DBMS Driver
a space-time interpolation geostatistical tool