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