QGIS - QGIS is a desktop geographic information system, or GIS.
Komoot - Plan Your Perfect Hiking, Mountain Biking or Road Biking Adventure
SAGA GIS - SAGA - System for Automated Geoscientific Analyses - is a Geographic Information System (GIS)...
AllTrails - Explore over 50,000 trails, reviews, and photos. Share them…
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.
Wikiloc Outdoor Navigation GPS - Follow millions of outdoor trails and record your own GPS tracks from your smartphone.