In order to support local and regional administrations' eGovernment / open government implementation efforts, the following use cases have been picked out from a recent study on how collaborative and digitally-based Open Government Services can enhance transparency and responsiveness in citizens' dealings with administration, build trust across sectors and provide better public services. The entire database of use cases can be viewed here.

• Open Data BCN: Barcelona is making 300 categories of public data available to the public; the main areas are spatial planning, population, urban services, economy and administration.

• Konto Bariery, a non-profit organization in the Czech Republic, and the Ministry of Regional Development of the Czech Republic, are using building accessibility data to create a web application, called mapybezbarier.cz. This web application provides users with a map containing information on the accessibility of various buildings in the Czech Republic. This can create a better user experience and social benefit for disabled people.

• The Belgian Mercurius platform is a shared platform that allows the Belgian public administrations, including regional administrations, to receive electronic invoices. The platform facilitates the interconnection of public administrations and private companies. As a shared platform, it is a single interface between businesses and governments, and avoids a situation where businesses need to connect with several public administrations for sending their invoices.

• KLIP: This data exchange platform was created by Agiv, the agency for geographical information in Flanders, in order to have a central platform where all public administrations could share their information regarding the location of underground cables and pipes. The platform offers an API, which allows service providers to connect to the platform. Business can then contact their service provider with the request about the location of underground cables and pipes in a certain area, in order to avoid damage when they perform excavation works. Over 100,000 requests were made via service providers in the first six months after the launch of the platform.

• TransportAPI: TransportAPI is a service that is offered by a private company Placr. TransportAPI is a data aggregation and analytics service for public transport data in the UK. It offers users and developers access to transport data which has been opened up by public transportation bodies like Transport for London, Network Rail, etc. Placr has collected and aggregated this information and they have built a business around this where they sell the data in a ready-to-use format in order for citizens, developers and businesses to build applications that directly make use of this transport data.

• Decide Madrid is an engagement platform that allows citizens to discuss and propose ideas that could positively impact Madrid. Proposals can be made and when 2% of the citizens in Madrid support the proposal the town council will discuss whether it will be implemented.

• Topo GPS is a mobile navigation application that is based on open data that originates from the base registry of topography in the Netherlands.

• Idées Paris / Paris participatory budget: This initiative empowered Parisian citizens to make proposals for spending 5% (or €500 million) of the city’s investment budget.

• Hamburg Transparency Act: Following the 2012 "Hamburg Transparency Act" almost all public authorities of Hamburg have to proactively publish a considerable amount of information on the functioning of the Hamburg administrations on the Transparenzportal. This information includes information on government contracts of public interest, building permits, minutes of meetings, etc. The Transparenzportal allows citizens to search and download the data. It also includes Hamburgs Open data. The Hamburg Transparency Act replaces the Hamburgische Freedom of Information Act, which was adopted in 2006 and amended in 2009, which already allowed access to official information - but only upon request.

• A web app to compare municipal budgets was an effort made by Politiken, the third-largest daily newspaper in Denmark. The kommune.politiken.dk is an application that provides insight in the municipalities in Denmark, based on open data.

• JijMaaktUtrecht is a platform for civil servants, citizens, businesses, entrepreneurs and NGO to collaborate on further improving the City of Utrecht. It allows to share needs and ideas with civil society and to collaborate to make ideas a reality. In addition the initiative is supported by a fund to can offer funding to realise new ideas.

• Molenwaard is a Dutch municipality that was created after merging three smaller Dutch municipalities. This was done in order to rationalise public spending of municipalities in the Netherlands. However, this created a problem of having three town halls, of which none of them was centrally located between the three municipalities. Therefore, the local city council decided to create a digital town hall which offers all services digitally or through mail delivery and occasionally through house calls. This avoids of having a physical town hall and the costs that are associated to having a physical town hall.