GeoNetwork provides an easy to use the web interface to search geospatial data across multiple catalogs. The search provides full-text search as well as faceted search on keywords, resource types, organizations, scale, … Users can easily refine the search and quickly get to the records of interest.
GeoSpatial layers, but also services, maps or even nongeographic datasets can be described in the catalog. Easily navigate across records and find sources or services publishing a dataset.