OSGC is an Open Source implementation of an OpenSearch GeoSpatial Catalogue compliant to OGC 10-32r3 specification, developed by EGI.eu (http://www.egi.eu/) under the ENVRI (http://envri.eu/) project.
OSGC provides a catalogue engine built on top of a PostgreSQL+Postgis database, which exposes a cusmizable OpenSearch interface. Most of the application configuration can be set from the Admin web interface, while Data Administrators have a separated Dropbox interface, which ease the management of the catalog and the data storage, and a Data Gateway interface, which controls access to data and produces data access statistics.
A stand-alone client web interface, written in HTML5 and Javascript, can be used to query this catalog and other compliant OpenSearch catalogs.