Discover the EU Open Source Solutions catalogue: Strengthening collaboration across Europe’s public sector
A growing hub of reusable digital tools for public administrations
The EU Open Source Solutions (OSS) catalogue is becoming a central gateway for public administrations across Europe to discover, share, and reuse open-source tools. Launched in 2025 via the Interoperable Europe Portal, the catalogue was created to help public bodies avoid duplicate development, reduce costs, and accelerate digital transformation by adopting interoperable solutions.
Today, the catalogue hosts a wide range of open-source solutions sourced from national and local catalogues across Europe. These solutions cover over 30 relevant public-sector domains, from digital citizenship tools and website builders to cloud-management platforms and geographic information systems. The catalogue continues to expand, with additional catalogues from Finland, Sweden, Belgium, and EU institutions already onboarded.
For the open data and interoperability communities, the EU OSS catalogue directly supports the goals of the Interoperable Europe Act by promoting reuse, transparency, and collaboration between Member States. The technical architecture of the catalogue consolidates solutions by using public APIs, allowing administrations to access reusable digital building blocks, omitting the need to start from scratch. This aids in the creation of citizen-focused services and helps strengthen digital sovereignty.
Public administrations are invited to explore the catalogue and contribute their own solutions to help build a more connected and innovative public sector. By sharing tools and best practices through the EU OSS catalogue, organisations can collectively advance digital transformation.
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