OpenLayers

OpenLayers makes it easy to put a dynamic map in any web page. It can display map tiles and markers loaded from any source. MetaCarta developed the initial version of OpenLayers and gave it to the public to further the use of geographic information of all kinds. OpenLayers is completely free, Open Source JavaScript, released under the BSD License.

http://www.openlayers.org/images/mit.png

http://www.openlayers.org/images/gym.png

http://www.openlayers.org/images/boston.png

Links

http://openlayers.org/