TL;DR: Open EU funding calls for startups are published in four places: the EU Funding & Tenders Portal (direct EU grants and, under a separate filter, cascade calls from EU-funded projects), national and regional agencies (cohesion money and co-funded programmes like Eurostars), the programme sites of EIT communities and partnerships, and the websites of cascade funding projects. No single list catches everything. Below: a source map, the exact portal filters to use, a 15-minute weekly routine, a scored triage worksheet, a copyable call tracker and a worked founder example.