uMap

This nifty OpenStreetMap project lets you create maps with OpenStreetMap layers in a minute and embed them in your site. * Choose the layers of your map * Works in your Browser * Add POIs: markers, lines, polygons, heatmaps, ... * Manage POIs appearance, colours and icons * Manage map options: display a minimap, locate user on load… * Batch import geostructured data (geojson, gpx, kml, osm...) * Choose the license for your data * free uMap hosts available (see http://wiki.openstreetmap.org/wiki/UMap#Instances) * Embed and share your map And it's open source ([http://en.wikipedia.org/wiki/WTFPL](Do What the Fuck You Want to Public License)), you can easily install and host it on your own server/webspace.