Yellowpages on the map. Places, organizations at openst

Gather a city map, with the function of adding places, displaying categories.
Separating places from the base and putting them on the map is the main task.
2gis.ru is a yellow book on the map. I suggest using openstreetmap or open source 2GS.
Stretch the design and match the search and perform the admin
It also requires long-term support for the project.