The OGD App Observatory publishes metadata about applications (i.e., Apps) created based on the Open Government Data. This metadata is described in terms of a newly proposed OGDA ontology and is exposed as Linked Open Data. An LOD interface and a SPARQL endpoint are provided. Additionally, this metadata can be browsed and analysed through an intuitive visual interface.
The metadata about the OGD apps has been collected both by automated processing of relevant RSS feeds and by manual expert analysis. For example, a group of master students determined by inspection the type of the app creator (Government, Individual and Organization), the domain that the application is most relevant for (e.g., Health, Transportation, Education) or the sustainability aspect best supported by the app (economic, social, environmental).