Nice Trails - Turn GPS tracks into 3D printed mountains
Google Earth Pro - Google Earth Pro allows you fly anywhere around the earth to view satellite imagery, maps, 3D building, and terrain, from galaxies in outer space to the canyons of the ocean.
Whympr - The app to plan, enjoy and share your mountain activities
Google Earth VR - Walk the earth in VR
Catch & Release: Outdoorsman's Consignment - Niche app for the outdoors, sports & fitness enthusiast
Zenly - Zenly is a GPS tracker to locate your friends in realtime.