GeoNetwork is a catalog application to manage spatially referenced resources. It provides powerful metadata editing and search functions as well as an interactive web map viewer. It is currently used in numerous Spatial Data Infrastructure initiatives across the world.

Geoportal Server is a standards-based, open source product that enables discovery and use of geospatial resources including data and services.

pycsw is an OGC CSW server implementation written in Python. pycsw fully implements the OpenGIS Catalogue Service Implementation Specification [Catalogue Service for the Web]. Initial development started in 2010 (more formally announced in 2011). The project is certified OGC Compliant, and is an OGC Reference Implementation. pycsw allows for the…

Official deegree repository providing geospatial core libraries, data access and advanced OGC web service implementations

Esri Geoportal Server is an open-source metadata catalog and editor

R Interface for OGC Web-Services (OWS)

Metadata Harvester for Esri Geoportal Server

Metadatenprofil der Geodateninfrastruktur Berlin

deegree security component for protecting OGC Web Services

A project to check links between data and metadata in a SDI

CLI app to retrieve list of services and datasets in a simple JSON format from nationaalgeoregister.nl

Source code snapshots of Collins' branch of Zyzzyva, applied on top of the legacy Zyzzyva repository.

Searching a CSW (Geodata catalogue) by external keyword thesaurus (SKOS/RDF)

A proof-of-concept API to expose CSW endpoints in a Web-friendly way

An extension of the CSW and NWL Scrabble lexicons to include words 16-21 letters long

A tool for extracting GCMD keywords of GeoNetwork records with CSW harvester

CSW web-client specifically for (OGC) webservices

CSW2CDT computer tape tool suite