GPSBabel - GPSBabel converts waypoints, tracks, and routes between popular GPS receivers such as Garmin or...
QGIS - QGIS is a desktop geographic information system, or GIS.
GpsMid - GpsMid is a free, fully offline, vector based map application for your mobile phone.
GRASS GIS - GRASS GIS is a free Geographic Information System (GIS) software used for geospatial data management and analysis, image processing, graphics/maps production, spatial modeling, and visualization.
RouteConverter - RouteConverter displays, modifies, enriches and converts GPS data between over 75 formats.
SAGA GIS - SAGA - System for Automated Geoscientific Analyses - is a Geographic Information System (GIS)...