How to specify points on the city/region map?

Question

PHP

Hello!
I have at work self-written monitoring of various equipment in branches scattered around the region and the city. Sometimes it is required to determine the location of travel to the branch on the map. I know its coordinates and in google maps it is enough to insert a link like https://www.google.ru/maps/place/28.75+21.49to see the point on the map. The trouble is that the company's network, according to security requirements (secret processing), is physically separated from the Internet. There are special computers from which employees access the Internet if necessary. transferring a link is hemorrhoids and not our method. There was a desire to pull out a map from somewhere and place it offline with links to a specific point. Tell me, from which navigator or where can I pull out a map so that it can be displayed on an intralan web page and coordinates can be calculated on it?

Answer 1

Looked towards OpenStreetMap ?

Answer 2

Raise a copy of OpenSteetMap with routing via OSRM service