About

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.

Directory at a glance

218

verified entries across the European ecosystem

Updated 2026-03-19

102

Companies
39

Benchmarks
23

Use cases
12

Challenges
42

Resources

Why this directory exists

Europe needs an open, transparent quantum directory

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 14 countries — from Finland's superconducting qubit pioneers to Spain's quantum optimization startups. The largest clusters are in DACH (25), Nordics (36), and Western Europe (24).

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

How entries are researched and verified

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:

nordics 36

dach 25

western europe 24

uk 9

southern europe 6

eastern europe 2

Ethics policy

What we will and will not do

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.