Tools that let users make maps:

Tripadvisor Foursquare https://jauntful.com/ Google Map Maker https://www.mapbox.com/

https://mapstr.com/ https://www.embedgooglemap.net/ https://travel.sygic.com/en https://snazzymaps.com/ https://maphub.net/JacobJohansen/Japan https://mapme.com/ https://mapmaker.nationalgeographic.org/ http://www.shoutem.com/app/map https://www.mapiful.com/ https://storymaps.arcgis.com/en/

http://geoawesomeness.com/top-19-online-geovisualization-tools-apis-libraries-beautiful-maps/

Publishers who publish map-content:

Eater Tripsavvy Tripadvisor