Viking is a free/open source program to manage GPS data
Toolkit for working with and mapping geospatial data
GPS navigation software for Windows Mobile & WinCE devices.
Automated detection of the unknown early map projection
Free software for maps
A cartography program with parameter adjustments and gravity fonctions
GPS track editor for editing tracks and planning (multiple) day tours
An information system for cyclists in Berlin and Brandenburg
Tool for assessment of environmental services on farm scale.
Little spatial viewer for geometries like SDO geometries, WKT and EWKT
Tool to work on map data, to check the data and generate your own maps
Offline vector map display ported from OsmAnd
Plugins for OpenCPN
ERSI Shapefile Viewer
A small nifty program where you build you own ZOO