This module displays host objects as markers on openstreetmap using leaflet.js. If you configure multiple hosts with the same coordinates, i.e. servers in a datacenter, a clustered view is rendered.
The Module can be found here
How to install the module can be found here
If you like the module and maybe you have altered in some kind of way you want the community to know please write a guide
in written form or share a screencast how you integrated it into your environment.