There are lots more OSM-based alternatives for particular use cases. For example, for a mobile app, try OsmAnd or maps.me. There are also 'niche' apps such as

There are lots more OSM-based alternatives for particular use cases. For example, for a mobile app, try OsmAnd or maps.me. There are also 'niche' apps such as MapOut, which is an outdoor-focused iOS mapping app with gorgeous cartography. Or for bike routing, try https://cycle.travel/map https://cycle.travel/map (disclaimer - my site), Komoot, CycleStreets or many others. OSM is historically very strong on walking and cycling, while being less focused than Google on car navigation. openstreetmap.org itself expressly doesn't aim to be a consumer-facing website; it's principally a portal, community and editing interface for mappers. The OSM philosophy is "we provide the data, you take it and build the apps".