hiking

Mapy.com

Czech Republic

Czech maps and navigation from Seznam.cz, a.s.: world coverage with proprietary CZ map data and OSM abroad, multi-mode routing, offline maps, and a developer REST API.

Organic Maps

Estonia

Estonian open-source offline maps and GPS navigation (Organic Maps OÜ): OpenStreetMap-based hiking, cycling, and driving guidance with no ads or tracking.

OsmAnd

Netherlands

Dutch open-source offline maps and multi-mode navigation app (OsmAnd B.V., Amstelveen) built on OpenStreetMap data for Android and iOS, with optional OsmAnd Cloud sync.

komoot (Logo unavailable)

komoot

Germany

German outdoor route planner and navigation app (komoot GmbH): sport-specific hiking and cycling routes on OpenStreetMap data, offline maps, turn-by-turn voice nav, and Garmin/e-bike integrations.