The Open Knowledge Foundation knows of nearly 50 data hubs running CKAN. (Since CKAN is free open-source software, there may be many more.) Many of these are official local, national or international data portals. Most of the others are run by communities of open data users.
Official national sites
Austria’s national data portal Offene Daten Österreich contains both government data and data harvested from a number of city portals, including the CKAN portals at Linz and Graz listed below.
The Brazilian national portal at http://dados.gov.br/ was built using a highly participative process, with planning and development meetings open to all interested citizens. It used CKAN in line with government policy to use free and open-source software where possible.
govdata.de is a federal data portal for Germany, which went live in February 2013. It includes data published by the federal government as well as data harvested from regional and city portals using CKAN’s harvesting capabilities. It aims to increase the amount of data released under a fully open licence by 2014.
The government of the Netherlands publishes its data at http://data.overheid.nl/. The site is built in Drupal and uses CKAN for the underlying catalogue.
The Norwegian government launched its Open Data site using CKAN in December 2010, at http://data.norge.no/. The site includes data from its company register, leading the OpenCorporates blog to put Norway at the top of its Access to Company Data scoreboard.
The UK’s http://data.gov.uk/ was one of the first government data portals on its launch in 2009, using Drupal to build the site and CKAN as a back-end. It was relaunched in June 2012 with data search pages now presented directly by CKAN.
Uruguay’s national open data portal https://catalogodatos.gub.uy/ was launched on 5 December 2012. National and local government agencies can add datsets to the catalogue.
The US government announced in January 2013 that they were moving to CKAN for their open data catalogue, combining datasets previously published in two different places, data.gov for general data and geo.data.gov for geographic data.
Official regional and city sites
Buenos Aires, Argentina
Buenos Aires Data was launched by the Buenos Aires city government in March 2012, running CKAN 1.5. It was upgraded to version 1.7 in July 2012.
Linz and Graz, Austria
Linz Open Data is part of the Open Commons Region Linz, a project to make the region’s digital public goods freely accessible. It offers statistical, mapping, election, transport and other data. The site is built in OpenCms with CKAN as a back-end, while also exposing the CKAN interface directly at ckan.data.linz.gv.at. The same architecture is used by Open Government Data Graz. Both are harvested by the Austrian national open data portal.
The state of Queensland launched the first governmental CKAN portal in Australia, Queensland Government data, in December 2012, with the help of the Open Knowledge Foundation and XVT Solutions, a local IT firm.
The Helsinki Region Infoshare aims to make regional information quickly and easily accessible to all. It is powered by CKAN and WordPress, and has over 900 datasets. The site has Finnish and English versions. The data is mainly statistical, giving a comprehensive and diverse outlook on a variety of urban phenomena, such as living conditions, economics and well-being, employment and transport.
Berlin Open Data provides data held by the State of Berlin. It was built in collaboration with the German chapter of the Open Knowledge Foundation.
The city of Hamburg in Germany launched a beta version of their data portal in February 2013. The portal uses CKAN on the back-end. The API is available at opendata.hamburg.de.
The open data portal for the state of Rheinland-Pfalz (Rhineland Palatinate) went live in March 2013. It is a single point of access for administrative data from across the state.
The Hansestadt Rostock (Hanseatic City of Rostock) launched its data portal, www.opendata-hro.de, in February 2013. It contains data from the city in a wide range of areas, such as transport, environment, infrastructure and administrative data, with the aim that it should find commercial and other uses.
Province of Rome, Italy
The Province of Rome is the biggest Italian province, containing Rome as well as 120 other towns. It is one of the partners in the Commons for Europe project aiming to bring digital innovation to cities in Europe. As part of the project, the Province has been involved in building widely-available public wifi, crowdsourcing ideas for public policy, and in the release of Open Data via Open Data | Provincia di Roma, a new CKAN data portal.
The Tuscan regional government Regione Toscana‘s Open Data portal dati.toscana.it was developed using CKAN 1.7.1 with several customisations, and launched in July 2012. It aims to encourage the publication of openly-licensed data by public administrations in Tuscany, and is part of the wider RTRT project to co-ordinate IT initiatives between public administrations in the region.
Aragón Open Data provides data held by the Spanish region of Aragón. It is published by the Aragón government and went live in February 2013.
Greater Manchester, UK
DataGM was created by public sector organisations in Greater Manchester, including ten local councils. It aims to release and bring together in one place as much of the data they hold as possible. DataGM is coordinated by Trafford Council in partnership with FutureEverything, which seeks out and shares new artforms and technologies in creative ways.
Denver, Colorado, USA
When the City and County of Denver, in Colorado, USA, wanted an open data portal, they were able to call on the assistance of the active data community running the state-wide OpenColorado (see below). Denver Open Data Catalog opened in July 2012 with 80 GIS geographical datasets.
Lexington, KY, USA
data.lexingtonKY.gov was built as a collaboration between the Lexington-Fayette Urban County Government and the local data community. It aims to “promote the openness, transparency and accountability of local government by providing high-value government data in standards compliant, machine readable format”.