In this example we are using OpenLayers (OL) instead of Google Maps API, and OpenStreetMap (OSM) as our map source instead of Google Maps, Bing Maps or any other. OL allows you to use any map source you want to.

It’s is quite easy to set up a functional map with OL. Most of the code here is just to set up different kinds of vector symbols (up to 10000). You can play and change the number of symbols, add/delete symbols and so on, to see the high-performance of OL.