Viking is a free/open source program to manage GPS data
GPS log file viewer and analyzer
GPS track editor for editing tracks and planning (multiple) day tours
Offline vector map display ported from OsmAnd
GPS mapping and management software
Web Mapping Platform
A tile-based map viewer with support for GPX files.
Open Street Map (OSM) tools, OSM/XML parser, tag extractor
Convert a Garmin ADM database file to a GPX file
Analyze gpx files and store summary in Sqlite database