Tech details for those interested: It's built on top of OpenLayers with Google Maps and OpenStreetMap as base layers. It was written in CoffeeScript. Jekyll

Tech details for those interested: It's built on top of OpenLayers with Google Maps and OpenStreetMap as base layers. It was written in CoffeeScript. Jekyll was used to provide a local development server and then also to build a _site directory. It's hosted on Google App Engine.