Geospatial Web Services: MassGIS
Office of Geographic Information
MassGIS geospatial web mapping services are open and available to the public as well as government users. They provide maps or information in response to queries (in URL or XML format) in a variety of output formats including kml, xml, rss, json and many others and almost 4,000 different map projections including the one used by Google which has become a defacto web standard.
Over a dozen state agencies have written applications against these services which currently respond to almost 100,000 requests/day. The standard APIs are OpenGeospatial Consortium (OGC) WMS (web map service), WFS (web feature service), and WCS (web coverage service) and ArcIMS based geocoding (address matching). This site contains information on accessing, using and developing against MassGIS-maintained WMS and WFS services. The services support the OGC Styled Layer Descriptor (SLD) standard to allow end-user customization of the display.