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: 02/12/2025

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: 03/03/2026

Interoperable Europe Solutions

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

Content and knowledge management

Last update: 20/03/2026

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: 10/02/2026

The Relevance of Open Source

Open Source Software

Last update: 12/03/2026

DG TAXUD and DIGIT cooperating for interoperable tax systems

DG TAXUD and DIGIT cooperate together for accelerating the implementation of trans-European tax systems through EC interoperability solutions

CollaborationDigital government+2 topics

19/03/2026

Virtual event

eDelivery Interoperability Forum

Join eDelivery community to learn about new features of Domibus 5.2. Ask your questions and share your feedback.

eDelivery and eInvoicing

Latest News

Last update: 16/03/2026

Country filters and enhanced Assessments tool with API support

This release introduces country-based filtering for the Interoperability Solutions Catalogue and Assessment reports. It also delivers an enhanced user interface and API capabilities for the Assessments tool.

CollaborationReusable Software ComponentsContent and knowledge management

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

Last update: 09/03/2026

Use case of eDelivery

The EMSWe seeks to reduce administrative burden by providing a harmonised single-entry point in each Member State for maritime reporting obligations, ensuring that reporting data is consistent and standardised across all Member States.

eDelivery and eInvoicing