Organic Maps is a free Android & iOS offline maps app for travelers
Lightweight GPS Logging Application For Android
GPS log file viewer and analyzer
Viking is a free/open source program to manage GPS data
GPS track editor for editing tracks and planning (multiple) day tours
Open Source Desktop GIS with Surveying and Cartography Functionality
Convert site coordinates, sectors and MW links in Excel to KML format
GoogleEarth Organiser, Editor & Toolkit
Web Mapping Platform
Application to browse and visualize your GPS files
Toolbox for geoscientists and geo enthusiasts
Obtain your cycling power
Open Street Map (OSM) tools, OSM/XML parser, tag extractor
Convert a Garmin ADM database file to a GPX file
GT2 combines online and offline navigation for hikers and cyclists
Convert GPS-Tracks user-saved tracks to KML files for Google Earth.