Europe prepares trial for Open Web Index to reduce reliance on Google and Bing
Europe prepares trial for Open Web Index to reduce reliance on Google and Bing

openwebsearch.eu
June Event Announcement: The Open Web Index goes public! - OpenWebSearch.eu – Promoting Europe‘s Independence in Web Search

After 2,5 years of intensive research and programming efforts, the entire Openwebsearch.eu project team is excited to grant access to its pilot of the first-ever federated pan-European Open Web Index (OWI).
so.. how do I search with it?
From what I can gather (it's a government /academic computing project so it has to be as clear as mud), you can't. They're only making the index, which would allow other people to build a search engine using it.
Also while it's "open", they're clearly intending to charge for commercial use:
not very open then...