GI-cat is an implementation of distributed catalog services made by ESSI Lab:

• Allows clients to discover and evaluate geoinformation resources over a federation of data sources;
• Allows different clients to use the service, as it publishes different catalog interfaces.

A data provider can deploy his/her own GI-cat instance, grouping together disparate data sources, to accommodate his/her user needs.

Data sources:

• OGC WCS 1.0, 1.1
• OGC WMS 1.3.0, 1.1.1
• OGC WFS 1.0.0
• OGC CSW 2.0.2 Core, AP ISO 1.0, ebRIM/CIM, ebRIM/EO
• THREDDS 1.0.1, 1.0.2
• CDI 1.04, 1.3
• GI-cat 5.x, 6.x
• GBIF
• GeoNetwork (versions 2.2.0 and 2.4.1) catalog service
• deegree (tested with version 2.2) catalog service
• OpenSearch accessor
• GENESI DR OpenSearch accessor 

Profilers:

• Profilers (CSW ebRIM CIM 2.0.2, CSW ebRIM EO 2.0.2)
• OGC CSW 2.0.2 AP core
• OGC CSW 2.0.2 AP ISO 1.0
• OGC CSW 2.0.2 ebRIM EO
• OGC CSW 2.0.2 ebRIM CIM
• OpenSearch
• GENESI DR
• GI-cat extended interface