Publicatiebureau van de Europese Unie
Runs data.europa.eu, the European data portal that brings together all national open data catalogues.
Sources explained
data.europa.eu
The European data portal harvests the catalogues of the EU institutions and of all member states, including the Dutch one. On 15 October 2026 it held 1,752,057 datasets from 212 catalogues, 30,119 of them from the Netherlands. You can search via an API and via SPARQL.
TED, European public procurement
TED (Tenders Electronic Daily) is the EU's procurement journal. Every public body buying above the European thresholds must report here: prior information, contract notice, award and modification, with CPV code, contracting authority and often the winner and value. The search API works without a key. In 2025 Dutch contracting authorities published 22,755 notices, over 183,000 since October 2016.