PeakNav drapes satellite imagery, OpenStreetMap trails and place names over a real elevation model of the whole planet. Fly over any range, tap a summit to orbit it, point your phone at the horizon to name the peaks in front of you, or open a photo and have it tagged with the mountains it shows. GPX tracks replay in 3D with their height profile; ski runs and lifts are painted on the slopes. Free, open source (GPL v3), works offline, on Android, iOS, Windows, macOS and Linux.
