The CSW Client tool enables Geoportal discovery functionality for your ArcMap and Explorer for ArcGIS applications. It also provides search capabilities for OGC Catalog Service for the Web (CS-W) catalogs directly through ArcMap and Explorer for ArcGIS. Once resources are returned, it can be viewed or downloaded. Additionally, if the resources are live services, they can be added to the ArcMap document or Explorer for ArcGIS Globe.
The CSW Client tool is now maintained separately as an open source product on Github.