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Open source startups in Europe

10 open source startups in Europe have raised money in rounds we track. These are the 10 that have raised the most, $824M between them, with the United Kingdom the most common home.

$824Mraised by these 10
10on our record in all
United Kingdommost common home
Odooraised the most
  1. 1OdooOdoo offers an integrated suite of business apps built through an open-source development model.

    Odoo offers an integrated suite of business apps built through an open-source development model.

    Founded 2002Louvain-la-Neuve, Belgium$631Mlast round Nov 2024
  2. 2QdrantQdrant is a Berlin-based company that specializes in open-source vector databases and high-performance vector search engines.

    Qdrant is a Berlin-based company that specializes in open-source vector databases and high-performance vector search engines.

    Founded 2021Berlin, Germany$50Mlast round Mar 2026
  3. 3UnleashFounded -Norway$38Mlast round Mar 2026
  4. 4VatesVates is a consultancy that specializes in analysis, research products, and risk management.

    Vates is a consultancy that specializes in analysis, research products, and risk management.

    Founded 2014France$34Mlast round Oct 2026
  5. 5PolarsPolars is an open-source DataFrame library and high-performance data processing solution, founded in 2020 and evolved into Polars Inc.

    Polars is an open-source DataFrame library and high-performance data processing solution, founded in 2020 and evolved into Polars Inc.

    Founded 2020Amsterdam, Netherlands$21Mlast round Sept 2025
  6. 6RerunRerun is a technology company based in Stockholm, founded in 2022.

    Rerun is a technology company based in Stockholm, founded in 2022.

    Founded 2022Lillhaerdal, Sweden$17Mlast round Mar 2025
  7. 7PassboltPassbolt is an open-source credential platform based in Luxembourg, designed for security-conscious IT, agile, and DevOps teams.

    Passbolt is an open-source credential platform based in Luxembourg, designed for security-conscious IT, agile, and DevOps teams.

    Founded 2017Esch-sur-Alzette, Luxembourg$12Mlast round Jan 2025
  8. 8LightdashLightdash turns a dbt project into a full-stack BI platform.

    Lightdash turns a dbt project into a full-stack BI platform.

    Founded 2020San Francisco, United Kingdom$11Mlast round Oct 2024
  9. 9SyntassoSyntasso are the creators of Kratix, the open-source framework for building platforms: https://kratix.io/

    Syntasso are the creators of Kratix, the open-source framework for building platforms: https://kratix.io/

    Founded 2021Fleet, United Kingdom$8.6Mlast round Jul 2023
  10. 10Vizor.ioVizor is a platform for creating & sharing VR on the web.

    Vizor is a platform for creating & sharing VR on the web.

    Founded 2015Helsinki, Finland$2.3Mlast round Apr 2017
Total fundinghow the list is ranked
15 November 2026updated nightly
Rounds we tracksource: Millionrounds

Companies whose funding rounds we classed as this sector, ranked by the total they have raised in rounds we hold. Nobody pays to be on a list.

Who backed them?

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