Commercial ski apps advertise “2,000+ supported resorts,” and the number sounds like a moat: someone licensed, digitized and maintains all those trail maps, and you pay a subscription that funds it.
There’s a parallel universe where that work already happened in public. OpenStreetMap contributors have mapped ski areas for two decades — pistes with names and difficulties, lifts with their stations, area boundaries. In October 2026 we indexed every named winter-sports area in OSM: 3,652 ski areas worldwide, from Zermatt to municipal rope tows in Norway, each with coordinates and terrain elevation.
Coverage mirrors OSM’s community: the Alps are mapped superbly, North America well, Japan patchily (several famous resorts carry different tags and don’t appear — if you map in OSM, that’s fixable by anyone). An OSM area isn’t “supported” in the hand-verified sense; it’s mapped, and quality varies. Alpy labels these entries exactly that way, next to a smaller catalog of 51 resorts we verified by hand (coordinates against live geocoding, elevations against terrain models).
Search any of the 3,652 areas in Alpy and you get the real trail network drawn two ways — a clean schematic chart and an interactive 3D view — plus live weather for its coordinates and full GPS tracking. For free, because the mapping was a commons to begin with. The app credits OpenStreetMap (ODbL) on every chart, and piste data is cached for 30 days per resort to keep load off the volunteer-run Overpass servers.
The licensed-map subscription model is legitimate — official resort artwork is genuinely nicer. But “thousands of resorts” stopped being a moat the day the commons caught up.
Browse the 51 verified resorts or search all 3,652 in the app.