About this directory

Kvantiq Directory is a curated, open directory of the European quantum computing ecosystem. It is maintained by Kvantiq Studio ApS, a Danish quantum technology company. The directory is free to use and contains no third-party tracking.

183 entries

74 companies · 32 benchmarks · 23 use cases · 12 challenges · 42 resources

Updated 2026-03-19

Why this directory exists

Europe has invested over EUR 10 billion in quantum computing through combined EU and national funding programs. There are 150+ quantum computing companies across the continent — spanning hardware manufacturers, software platforms, consulting firms, and research spinouts.

Yet no single, open directory focused on the European ecosystem exists. The closest alternative — The Quantum Insider — is US-based and paywalled. Kvantiq Directory fills that gap with a free, transparent, and ethically curated resource built for the European quantum community.

Did you know?

European countries have active quantum computing companies

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The directory covers companies from 13 countries — from Finland's superconducting qubit pioneers to Spain's quantum optimization startups. The largest clusters are in DACH (25), Nordics (17), and Western Europe (17).

Quantum fact

minimum verified sources per entry

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Every entry in this directory requires at least two independently verified sources — company websites, peer-reviewed papers, EU project databases, or major tech press. No self-reported data. No unverified press releases. This is what sets Kvantiq apart from aggregator-style directories.

Methodology

Collection

Every entry is independently researched by the Kvantiq Studio team from primary sources: official company websites, peer-reviewed publications, EU project databases (Quantum Flagship, EuroHPC, BMBF), and major tech press (Nature, Science, TechCrunch). No self-reported data or press releases taken at face value.

Verification

All entries require a minimum of two independently verified sources. Citations follow numbered APS/IEEE style — the standard in physics and quantum computing. Where available, we link to DOI-resolved papers and arXiv preprints. Every source includes a dateAccessed field.

Inclusion

Companies must have an active website, verifiable operations, and a clear quantum computing focus. Early-stage startups without public visibility are excluded until they reach a verifiable threshold. Benchmarks must have published methodology and ideally reproducible code.

Updates

The directory is updated periodically. Each cycle re-verifies existing entries and adds new ones. The build system validates all content against strict Zod schemas — malformed data cannot be published.

Geographic scope

Nordics and DACH first, then broader Europe. Company coverage by region:

dach 25

nordics 17

western europe 17

uk 8

southern europe 5

eastern europe 2

Ethics policy

European-first, open-source preferred: We prioritize European companies and open-source projects in our curation and affiliate linking.
No visitor tracking: No Google Analytics. No Facebook pixels. No third-party tracking of any kind. Privacy-respecting analytics only.
Ethical advertising only: No Google AdSense. Only contextual, privacy-respecting ad networks — EthicalAds or Carbon Ads.
Transparent linking: Companies on the blocklist (surveillance-capitalism firms) are referenced via privacy-preserving search links, not direct referrals. Their open-source frameworks keep direct links.

Know a company, benchmark, or resource that should be listed? Submit a listing.