ISA² - Interoperability solutions for public administrations, businesses and citizens


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The ISA² Programme supports the development of solutions in the area of interoperability. The solutions listed below are already operational and can be reused free of charge. More solutions will be made available continuously. 

Who is using ISA² solutions?

To see which EU countries are already using our solutions, click on a country in the map below. You will get a list of solutions used in the country. You can also filter the results by a specific solution (use the sidebar on the right). 

European Interoperability Reference Architecture and Cartography tool

When is this solution for you?

You work in a public administration. A cross-border public service is about to be developed. You would like to keep costs down and reuse interoperability solutions that have already been developed.

A collaborative platform facilitating the sharing and reuse of IT solutions developed for public administrations

When is this solution for you?

You would like to set up your own national collaborative platform and catalogue of reusable IT solutions providing similar services to those of Joinup.


Specification describing public sector datasets

When is this solution for you?

You have a data catalogue or you would like to create a data catalogue. In this catalogue, you want to:
Make the data easily searchable and discoverable in many languages for the highest number of data consumers possible.
- Improve the information provided by data owners on their datasets with a minimum set of mandatory information (e.g. title for the dataset).

Core Vocabularies

Simplified, reusable and extensible data models

When is this solution for you?

As a public administration, you want to:

- Develop new systems from a conceptual and logical data model
- Enable the information exchange between systems
- Integrate data from various sources
- Publish data in a common export format


Metadata standard

When is this solution for you?

You are involved in the metadata management of a European public administration or service and want to explore, (re-)use or share semantic assets (metadata or reference data).

You are looking for ways to:
- describe semantic assets in a common way so that they can be seamlessly cross-queried and discovered by ICT developers  from a single access point, such as Joinup;
- search, identify, retrieve, compare semantic assets to be reused avoiding duplication and expensive design work through a single point of access;
- keep own system for documenting and storing semantic assets;
- improve indexing and visibility of own assets;
- link semantic assets to one another in cross-border and cross-sector settings.


A data model for describing public services and the associated life and business events

When is this solution for you?

You are responsible for implementing a catalogue or a portal of public services in your country, region, municipality, etc. In some cases you may need to compile and publish information about public services from various authorities.

Public administrations and service providers can use this to guarantee a degree of cross-domain and cross-border interoperability between public service catalogues.

The National Interoperability Framework Observatory

When is this solution for you?

You work for a public administration and you are in charge of drafting or reviewing your National Interoperability Framework (NIF). You are responsible for an interoperability initiative. You want to make sure that this Framework or initiative is aligned with the European Interoperability Framework (EIF). You want to have a comprehensive overview of eGovernment activities in European countries or at European Union level.


Open source licence

When is this solution for you?

You want to publish your software, data, documents, specifications or source codes under an open source licence that has a clear legal standing in European law.

ArchiMate diagrams visualising e-Document lifecycle

When is this solution for you?

You are building a system for electronic documents.

Interoperability Maturity Assessment of a Public Service

When is this solution for you?

You are involved in the design, development, management or delivery of a digital public service? IMAPS gives you a tool to evaluate the interoperability maturity of your digital public service and to identify improvement opportunities towards seamless interoperability.

The Re3gistry is a tool to manage and share reference codes.

When is this solution for you?

When you need to manage and share reference codes within and between organisations, the Re3gistry solution can support you. These reference codes uniquely define sets of permissible values for a data field or provide context for the exchanged data. Examples of reference codes are simple enumerations and flat lists to complex controlled vocabularies, taxonomies, thesauri.

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A tool facilitating the drafting of legislative texts

When is this solution for you?

You are dealing with the editing or publication of legal texts. You are looking for an easy to use editing tool that provides guidance and quality control for writers. You also need a structured format that would enable automatic processing and interoperability between IT systems.

OCS for ECIs

Online Collection Software to support European Citizens' Initiatives

When is this solution for you?

You are the organiser of a European Citizens' Initiative (ECI) and wish to gather statements of support online.

A single tool facilitating participation in public procurement across the EU

When is this solution for you?

You are a public administration body engaging in public procurement.
You are a company participating in a tender.

A tool for creating, managing and analysing online surveys and public consultations

When is this solution for you?

You would like to create and conduct multilingual online surveys or consultations with easy analysis of results.

Test Bed

Interoperability and conformance testing platform

When is this solution for you?

You are deploying a distributed application or a central service that other systems will connect to (e.g. a peer-to-peer network or a web service).

You are an owner of a system that wants to connect to a central service, and you want to ensure interoperability between the interconnecting systems.

A data communication network service, operated by the European Commission

When is this solution for you?

You would like to implement an information system to exchange data between your administration and other administrations in Europe (EU and national). The security and availability of the data are especially important to you.

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Common assessment method for standards and specifications

When is this solution for you?

You want to use ICT standards or specifications in procuring and implementing your regional, national or cross-border ICT services. You would like to make sure that you choose the best available ICT standards or specifications to fulfil your business needs.

Open Project Management Methodology

When is this solution for you?

You are a project manager looking for free and easy to use project management methodology. 


A multilingual platform for collaborative thesaurus management

When is this solution for you?

You want to centralise the management of controlled vocabularies and metadata used by your public administration to support interoperability.