OpenLayers is a BSD-licensed, pure JavaScript API for building map applications on
the Web. OpenLayers offers the ability to display a number of different types of data
(e.g. WMS, WFS, point data) in a dynamic, AJAX-driven, "slippy" mapping interface. We
will look at how to view data from OGC web services, GeoRSS feeds, ka-Map caches,
Google Maps, KML, and more in OpenLayers. We will also examine how the OpenLayers API
makes it easy to build new and slick mapping apps.