Reusable Software Components

Featured Content

Last update: 09/01/2026

Core Vocabularies

Reusable data models for public administrations such as Person or Business. They facilitate system integration, data publishing, and design of new systems. It is an EC solution.

Standardisation

Last update: 07/05/2026

DCAT Application Profile for data portals in Europe

DCAT-AP is a specification for metadata records, enhancing semantic interoperability across European data portals. Based on W3C's DCAT, it supports standardised dataset descriptions, enabling efficient data exchange and reuse. It is an EC solution.

Standardisation

Last update: 24/04/2024

EU Digital Identity Wallet

The European Digital Idenity Framework harmonizes authentication to digital services and enables sharing relevant identity data for citizens and businesses.

SemanticsOpen Source Software+2 topics

Last update: 13/02/2024

Once-Only Technical System (OOTS)

The Once-Only Technical System (OOTS) streamlines data retrieval for cross-border procedures, enhancing trust, efficiency, and data exchange among EU public administrations and citizens. It is an EC solution.

Collaboration

Last update: 04/03/2026

eDelivery

Secure, interoperable data/document exchange across borders using AS4 Access Points, promoting vendor-neutral, reliable, and scalable communication for public administrations and businesses. It is an EC solution.

Reusable Software ComponentseDelivery and eInvoicing

Last update: 13/02/2024

eID

The eID Building Block enhances cross-border digital services in the EU by enabling secure electronic identification and transactions in compliance with the eIDAS Regulation, promoting interoperability, trust, and security. It is an EC solution.

Reusable Software ComponentseIdentity and eSignature

Last update: 13/02/2024

eSignature

The DIGITAL eSignature Building Block enables electronic signatures in compliance with the eIDAS Regulation, supporting secure, cross-border digital interactions for public services, businesses, and citizens. It is an EC solution.

Reusable Software ComponentseIdentity and eSignature

Last update: 13/02/2024

eInvoicing

The eInvoicing Building Block boosts EU eInvoicing, adhering to EU standards for economic benefits. It aids public/private sectors in digital transition, offering support services for smooth adoption of eInvoicing. It is an EC solution.

Reusable Software ComponentseDelivery and eInvoicing

Last update: 16/02/2024

eTranslation

eTranslation is a machine translation tool that helps public administrations and businesses exchange information and documents across all official EU languages, Icelandic and Norwegian.

Languages and translation

Last update: 20/04/2026

Interoperable Europe Solutions

This space features digital solutions labelled as 'Interoperable Europe solutions' by the Interoperable Europe Board.

Content and knowledge management

Last update: 22/05/2026

Interoperability solutions

Main solutions for architecture, licensing, data models and specifications

Reusable Software ComponentsSemanticsStandardisation

Last update: 03/04/2025

EU Open Source Solutions Catalogue

Repository of the Open Source Software Solutions of the Public Administrations

Open Source Software

IN THE SPOTLIGHT

Last update: 13/04/2026

DRPM Spring Reading List

CollaborationDigital government

Last update: 03/04/2026

Croatian academic & scientific communities launch joint platform

With the OpenCode.HR platform, researchers and academics can collaborate on shared open source solutions and projects

Culture and educationInteroperable Europe policy+2 topics

Last update: 17/03/2026

New era for the EU OSS Catalogue

A new era: Individual open source solutions, modules and libraries now join the EU Open Source Solutions Catalogue

Open Source SoftwareCollaboration+3 topics

Latest News

Last update: 22/05/2026

ITB v1.29.4 released

Release 1.29.4 of the Interoperability Test Bed software is now available.

ICTReusable Software Components+2 topics

Last update: 20/05/2026

Interoperable Europe Academy Seasonal School 2026 agenda unveiled

Taking place online on 9 and 10 June 2026, the programme is structured around five key steps: defining clear requirements from policy needs, reusing existing European solutions, collaborating and governing interoperable initiatives, deploying interoperabl

Interoperable Europe policyReusable Software Components+4 topics

Last update: 14/05/2026

New banner, new OSS catalogues and improvements

This release adds a new Portal banner, expands the EU OSS Catalogue with ARTE and OGCIO Building Blocks and enhances navigation and display in the Assessments interface and Events calendar.

CollaborationReusable Software ComponentsContent and knowledge management