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DefTech directory

Early-Stage DefTech Startups in Europe

DefTech is the wave of companies rebuilding how European nations sense, decide and act, with software-defined systems rather than decade-long procurement programs. The field runs from autonomous platforms and command software to sensing and the hardware underneath it. Much of it is dual-use, with the same autonomy and perception stacks serving civilian markets.

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Why deftech now

Europe is rearming, and a generation of venture-backed teams is moving faster than the primes they sell alongside. Sovereign capability, drone warfare lessons from Ukraine, and rising defense budgets have turned what was an unfundable category into one of the most active on the continent. The teams below are turning that demand into deployable product.

How we choose these companies

A public directory of early-stage European deftech startups. We aim to list every company that fits, not a hand-picked few. Here is exactly what that means, and why:

  • European: headquartered in Europe (EU, EEA, UK, Switzerland and nearby). We go by where a company is based, not just where it sells, because this is a map of the European ecosystem.
  • Early-stage: founded in the last 5 years. That is where the new ideas and the most active part of the ecosystem are; established household-name scaleups are a different list.
  • A real product company: builds a scalable technology product or platform. We leave out agencies, consultancies and local service businesses, which do not follow the same path.
  • Independent: a standalone company, not a subsidiary or brand of a larger corporation.
  • Active: currently operating, with a live website. We re-check regularly and remove companies that shut down, get acquired, or move out of scope.

We list only public information about what each company does. We deliberately do not track or show fundraising: who is raising, who is investing, or how much. This is a directory of companies, not a deal database.

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68 early-stage deftech startups in Europe

Founded in the last 5 years. A comprehensive list from public sources, not a hand-picked few.

  • Donaustahl

    Donaustauf, Germany

    Develops adaptive defense systems, loitering munitions, and tactical robotic equipment.

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  • Codya

    Prague, Czechia

    Develops intelligence software and OSINT tools for defense, military, and law enforcement agencies.

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  • Swarmer

    Kyiv, Ukraine

    AI-powered software designed to orchestrate and automate drone swarm missions in complex environments.

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  • REAKTO

    Kraków, Poland

    Offers semi-autonomous drone-in-a-box infrastructure for rapid-response aerial surveillance and security.

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  • Tethys Robotics

    Zurich, Switzerland

    Develops autonomous underwater drones designed for search, rescue, and inspection in demanding and high-current environments.

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  • Unmanned Defense Systems

    Vilnius, Lithuania

    Designs unmanned aerial systems and a swarm command-and-control software suite with GNSS-denied navigation and self-healing networks.

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  • KrattWorks

    Tallinn, Estonia

    Designs autonomous drones equipped with edge AI for defense, law enforcement, and firefighting.

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  • Granta Autonomy

    Vilnius, Lithuania

    Designs and builds military-grade micro-unmanned aerial vehicles and dual-use gimbal payloads for tactical reconnaissance.

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  • Deftech

    Baku, Azerbaijan

    Develops military-grade tactical unmanned aerial systems and defense hardware.

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  • Delian Alliance Industries

    Athens, Greece

    Builds AI-powered autonomous surveillance towers and mission software to detect, track and respond to threats for border and coastal defence.

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