GPS log file viewer and analyzer
Toolkit for working with and mapping geospatial data
GPS track editor for editing tracks and planning (multiple) day tours
Viking is a free/open source program to manage GPS data
Open Source Desktop GIS with Surveying and Cartography Functionality
GeoData Web Editing [core SIG Web]
Web Mapping Platform
Toolbox for geoscientists and geo enthusiasts
Open Street Map (OSM) tools, OSM/XML parser, tag extractor
GT2 combines online and offline navigation for hikers and cyclists
Convert GPS-Tracks user-saved tracks to KML files for Google Earth.