OsmAPP is described as 'Offers a Google Maps–style interface with clickable OpenStreetMap points, editing tools, vector maps with 3D tilting, public transport data, and mobile PWA support' and is a GPS Navigation service in the travel & location category. There are more than 25 alternatives to OsmAPP, not only websites but also apps for a variety of platforms, including Android, iPhone, Android Tablet and iPad apps. The best OsmAPP alternative is CoMaps, which is both free and Open Source. Other great sites and apps similar to OsmAPP are OpenStreetMap, Google Maps, Organic Maps and OsmAnd.