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
Open Source Desktop GIS with Surveying and Cartography Functionality
Free minimalist software for maps, import DWG, DXF, SHP, KML, GeoJSON
Create, edit view GPX tracks (in the background - online maps)
a simple virtual world editor
Offline vector map display ported from OsmAnd
eGPXviewer is a 3D GPX track viewer
Java Library for working with gpx files
GPS mapping and management software
Web Mapping Platform
Application to browse and visualize your GPS files
A tile-based map viewer with support for GPX files.
Raster layer editing toolbar for ArcMap 10.x
Automate merging / importing of country data from different sources