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DefTech · Estonia

DefTech startups in Estonia

Early-stage deftech companies headquartered in Estonia, founded in the last 5 years. Drawn from public sources.

DefTech across EuropeAll Estonia sectors

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.

Missing a company, or see something off? Suggest an addition or report an issue.

9 early-stage deftech startups in Estonia

A comprehensive list from public sources, not a hand-picked few.

  • Defensphere

    Tallinn, Estonia

    Develops a 360-degree mixed-reality situational awareness system for armored military vehicles.

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  • Frankenburg Technologies

    Tallinn, Estonia

    Develops low-cost short-range interceptor missiles to defeat drones and other aerial threats at scale.

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  • GaltTec

    Tartu, Estonia

    Produces microtubular solid oxide fuel cells that power drones and off-grid defense equipment.

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  • Hevi Optronics

    Tallinn, Estonia

    Designs and manufactures advanced optical gimbal payloads for unmanned aerial vehicles.

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  • KrattWorks

    Tallinn, Estonia

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

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  • Lendurai

    Tallinn, Estonia

    Computer-vision and AI systems that let drones operate without GNSS satellite navigation or radio control in contested environments.

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  • TrackDeep

    Tallinn, Estonia

    Builds an AI-powered surveillance and tracking platform for drone detection and airspace security.

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  • Vegvisir

    Tallinn, Estonia

    Creates mixed-reality visualization systems that give armored vehicle crews a 360-degree view through the hull.

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  • Wayren

    Tartu, Estonia

    Develops secure, decentralized communication networks designed for bandwidth-starved or contested defense environments.

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