A Catalog Item is a dataset or service that can be enabled for display on the map or in a chart.  The Type column in the table below indicates the `"type"` property to use in the [Initialization File](../customizing/initialization-files.md).

| Name | Type |
|------|------|
| [ArcGIS FeatureServer](catalog-type-details/esri-featureServer.md) | `esri-featureServer` |
| [ArcGIS MapServer](catalog-type-details/esri-mapServer.md) | `esri-mapServer` |
| [Bing Maps](catalog-type-details/bing-maps.md) | `bing-maps` |
| [Cesium Terrain](catalog-type-details/cesium-terrain.md) | `cesium-terrain` |
| [Cesium Language (CZML)](catalog-type-details/czml.md) | `czml` |
| [CKAN Resource](catalog-type-details/ckan-resource.md) | `ckan-resource` |
| [Composite](catalog-type-details/composite.md) | `composite` |
| [Comma-Separated Values (CSV)](catalog-type-details/csv.md) | `csv` |
| [Format Conversion Service (based on OGR)](catalog-type-details/ogr.md) | `ogr` |
| [GeoJSON](catalog-type-details/geojson.md) | `geojson` |
| [GPX](catalog-type-details/gpx.md) | `gpx` |
| [Keyhole Markup Language (KML)](catalog-type-details/kml.md) | `kml` |
| [OpenStreetMap](catalog-type-details/open-street-map.md) | `open-street-map` |
| [SDMX-JSON](catalog-type-details/sdmx-json.md) | `sdmx-json` |
| [Sensor Observation Service (SOS)](catalog-type-details/sos.md) | `sos` |
| [URL Template](catalog-type-details/url-template.md) | `url-template` |
| [Web Feature Service (WFS)](catalog-type-details/wfs.md) | `wfs` |
| [Web Map Service (WMS)](catalog-type-details/wms.md) | `wms` |