Slopes - Track your edge skiing and snowboarding
Mapbox - An open source mapping platform for custom designed maps. Our APIs and SDKs are the building blocks to integrate location into any mobile or web app.
OsmAnd - Global mobile map viewing and navigation for online and offline OSM maps
QGIS - QGIS is a desktop geographic information system, or GIS.
Trekarta - Trekarta is an application that is designed for travelers, hikers, and tourists to provide guidelines related to hiking, off-roading, boating, cycling, geocaching, and all the activities related to the outdoors.
OpenStreetMap - OpenStreetMap is a map of the world, created by people like you and free to use under an open license.