B2B Data

European SaaS prospecting feels harder than US prospecting because the data is split across five surfaces with different access models. Here's how Companies House, Handelsregister, KvK, Sifted, and Tech.eu fit together - and the noise problem most lists skip.

Stealth-mode companies don't appear in static B2B databases by definition. The only way to find them is open-web search across the four places they leak: certificate transparency logs, LinkedIn bio changes, indexed-but-unlinked Notion or Linear pages, and SEC Form D filings.

Almost nobody writes about GitHub as a B2B lead source. The good signals sit below the surface: the dependents graph, manifest mining, Sigstore release attestations, and committer-email-domain mapping. Every GitHub-derived lead needs a corroborating non-GitHub signal before it ships.

Y Combinator's W26 batch closed demo day in March with 196 newly funded companies. The cohort is real; the buying behavior is mostly not. Here is the workflow that actually finds qualified buyers in the YC directory - batch and status filters, enrichment layer, and a stage filter.

A company that just ripped out Salesforce after 15 years is the warmest account in your pipeline for the next three months. Here's how to find the rip-out without paying $495/month for BuiltWith - using CSP headers, job-ad diffs, vendor case studies, and GitHub commits.