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Reusable Software Components

Reusable software components facilitate interoperability in digital public services. They enable developers to build new applications and services more easily by using common specifications(EU Digital Identity Wallet, Once-Only Technical System, eID, eSignatory...), services (TestBed) or tool (Wesite Evidence Collector). Discover them!

Featured Content

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: 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: 20/02/2024

eDelivery

Secure, interoperable data/document exchange across EU 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: 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: 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: 28/06/2024

Interoperability Test Bed

Interoperability Test Bed tests the interoperability and the conformance of your digital services. It is a free service and a reusable OSS. It is an EC solution.
ToolsReusable Software Components+3 topics
Last update: 10/04/2025

Website Evidence Collector

Website Evidence Collector is an OSS (under EUPL), streamlines privacy inspections of websites, gathering evidence like cookies, and external requests. It is an EU solution (EDPS).
ICT securityOpen Source SoftwareReusable Software Components

IN THE SPOTLIGHT

Last update: 31/03/2025

The EU Open Source Solutions Catalogue is now live

The European Commission has launched the EU Open Source Solutions Catalogue (EU OSS Catalogue) today, 31 March, making it publicly accessible through the Interoperable Europe Portal.
eGovernmentICT+2 topics
Last update: 06/03/2025

ELISE - European Location Interoperability Solutions for e-Government

The European Location Interoperability Solutions for e-Government (ELISE) action aims at Enabling Digital Government through Geospatial Data and Location Intelligence. It is a package of legal/policy, organisational, semantic and technical...
eGovernmentGeospatial

Latest News

Last update: 15/05/2025

ITB in support of the World Health Organization

The World Health Organization (WHO) adopts the Interoperability Test Bed (ITB) as its conformance testing solution going forward, with a first use case in support of the 2025 Hajj Pilgrimage.
eHealthICT+3 topics
Last update: 25/04/2025

Open source application benefits from accessing public data

Thanks to the Wiener Linien Echtzeitdaten datasets, in the city of Vienna, WoBahn, an open source application, provides real-time information on all metro lines (U1, U2, U3, U4) to citizens.
Smart citiesTools+3 topics
Last update: 08/04/2025

New milestone release available for the Test Bed's validators

A new milestone release (1.8.0) is now available for the Test Bed’s RDF, XML, JSON and CSV validators.
ICTOpen Source Software+2 topics