Viking is a free/open source program to manage GPS data
Read, write and edit metadata
GPS log file viewer and analyzer
GPS track editor for editing tracks and planning (multiple) day tours
Tool to work on map data, to check the data and generate your own maps
GPS mapping and management software
Bildverwaltung und Fotoschau mit einblendbarer Foto-Beschriftung
Multiplatform Ham Radio APRS and Mapping Program
location based social network
GPS Manager (GPSMan): a manager of GPS data