Top list · Worldwide

Open source startups worldwide

50 open source startups worldwide have raised money in rounds we track. These are the 50 that have raised the most, $9.8B between them, with the United States the most common home.

$9.8Braised by these 50
50on our record in all
United Statesmost common home
Reflection AIraised the most
  1. 1Reflection AIFounded -United States$3.0Blast round Oct 2025
  2. 2Together AITogether AI is a cloud-based platform designed for constructing open-source generative AI and infrastructure for developing AI models.

    Together AI is a cloud-based platform designed for constructing open-source generative AI and infrastructure for developing AI models.

    Founded 2022San Francisco, United States$1.1Blast round Jul 2026
  3. 3TemporalTemporal is a financial services and market infrastructure company focused on enhancing efficiency in financial markets, particularly in repo-like instruments a

    Temporal is a financial services and market infrastructure company focused on enhancing efficiency in financial markets, particularly in repo-like instruments a

    Founded 2022United States$996Mlast round Sept 2026
  4. 4SupabaseSupabase is an open-source Backend-as-a-Service (BaaS) platform founded in 2020 and headquartered in San Francisco, California.

    Supabase is an open-source Backend-as-a-Service (BaaS) platform founded in 2020 and headquartered in San Francisco, California.

    Founded 2020Midland, United States$950Mlast round Oct 2026
  5. 5ChainguardChainguard is a cybersecurity company founded in 2021, focused on software supply chain security.

    Chainguard is a cybersecurity company founded in 2021, focused on software supply chain security.

    Founded 2021Kirkland, United States$776Mlast round Oct 2025
  6. 6OdooOdoo 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
  7. 7LangChainLangChain is an artificial intelligence company based in San Francisco, founded in 2022 by Harrison Chase and Ankush Gola.

    LangChain is an artificial intelligence company based in San Francisco, founded in 2022 by Harrison Chase and Ankush Gola.

    Founded 2022San Francisco, United States$425Mlast round Nov 2026
  8. 8ClickHouseClickHouse is a technology company that develops ClickHouse®, an open-source, column-oriented OLAP database management system designed for real-time analytics a

    ClickHouse is a technology company that develops ClickHouse®, an open-source, column-oriented OLAP database management system designed for real-time analytics a

    Founded 2021Palo Alto, United States$400Mlast round Jan 2026
  9. 9Nous ResearchNous Research is an American open-source AI research lab founded in 2023.

    Nous Research is an American open-source AI research lab founded in 2023.

    Founded 2023Austin, United States$215Mlast round Oct 2026
  10. 10AnacondaAnaconda is a software company founded in 2012 and based in Austin, Texas.

    Anaconda is a software company founded in 2012 and based in Austin, Texas.

    Founded 2012Austin, United States$172Mlast round Jul 2025
  11. 11Arcee AIArcee AI is a U.S.

    Arcee AI is a U.S.

    Founded 2023San Francisco, United States$150Mlast round Sept 2026
  12. 12PostHogPostHog is a San Francisco-based company founded in 2020 by James Hawkins and Tim Glaser.

    PostHog is a San Francisco-based company founded in 2020 by James Hawkins and Tim Glaser.

    Founded 2020San Francisco, United States$145Mlast round Sept 2025
  13. 13BlueskyAn Integrated Promotional Marketing Company Blue Sky Marketing Group (BSMG) is a full service marketing agency that specializes in promotional products.

    An Integrated Promotional Marketing Company Blue Sky Marketing Group (BSMG) is a full service marketing agency that specializes in promotional products.

    Founded 1997Northbrook, United States$124Mlast round Mar 2026
  14. 14SocketSocket provides telephone, television and basic dial-up internet service.

    Socket provides telephone, television and basic dial-up internet service.

    Founded 1994Columbia, United States$107Mlast round May 2026
  15. 15OllamaGet up and running with large language models.

    Get up and running with large language models.

    Founded 2023Palo Alto, United States$65Mlast round Jul 2026
  16. 16QdrantQdrant 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
  17. 17UnleashFounded -Norway$38Mlast round Mar 2026
  18. 18NetBox LabsNetBox Labs is a technology company based in New York, founded in 2023.

    NetBox Labs is a technology company based in New York, founded in 2023.

    Founded 2023New York, United States$35Mlast round Jul 2025
  19. 19VatesVates 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
  20. 20DifyDify.AI is an open-source platform designed for developing, deploying, and managing Large Language Model (LLM) applications.

    Dify.AI is an open-source platform designed for developing, deploying, and managing Large Language Model (LLM) applications.

    Founded 2023Menlo Park, United States$30Mlast round Mar 2026
  21. 21FloxFlox is a software development platform that creates reproducible environments for the entire software lifecycle.

    Flox is a software development platform that creates reproducible environments for the entire software lifecycle.

    Founded 2021New York, United States$29Mlast round Sept 2025
  22. 22CopilotKitThe full-stack framework for building user interactive agents and copilots.

    The full-stack framework for building user interactive agents and copilots.

    Founded 2023Seattle, United States$27Mlast round May 2026
  23. 23Truffle SecurityTruffle Security is an open source cybersecurity company that offers solutions for finding and remediating leaked software credentials.

    Truffle Security is an open source cybersecurity company that offers solutions for finding and remediating leaked software credentials.

    Founded 2021San Francisco, United States$25Mlast round Nov 2025
  24. 24PolarsPolars 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
  25. 25Mem0Mem0 is a San Francisco-based AI infrastructure company founded in 2023.

    Mem0 is a San Francisco-based AI infrastructure company founded in 2023.

    Founded 2023San Francisco, United States$20Mlast round Oct 2025
  26. 26Featherless.aiFeatherless AI is a technology company based in San Francisco, founded in 2023 by Eugene Cheah, Harrison Vanderbyl, and Wesley George.

    Featherless AI is a technology company based in San Francisco, founded in 2023 by Eugene Cheah, Harrison Vanderbyl, and Wesley George.

    Founded 2023San Francisco, United States$20Mlast round Apr 2026
  27. 27DiscourseDiscourse is an open-source community platform founded in 2012 by Jeff Atwood, Robin Ward, and Sam Saffron.

    Discourse is an open-source community platform founded in 2012 by Jeff Atwood, Robin Ward, and Sam Saffron.

    Founded 2012Chicago, United States$20Mlast round Aug 2021
  28. 28RerunRerun 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
  29. 29PolarFounded -United States$16Mlast round Jul 2026
  30. 30NirmataNirmata is an enterprise technology company based in San Jose, California, specializing in cloud-native security policy automation and Kubernetes management.

    Nirmata is an enterprise technology company based in San Jose, California, specializing in cloud-native security policy automation and Kubernetes management.

    Founded 2017Santa Clara, United States$14Mlast round Feb 2025
  31. 31PassboltPassbolt 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
  32. 32NanoCoFounded -United States$12Mlast round May 2026
  33. 33LightdashLightdash 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
  34. 34Merit SystemsMerit Systems is a software development company based in Brooklyn, New York, founded in 2024.

    Merit Systems is a software development company based in Brooklyn, New York, founded in 2024.

    Founded 2024New York, United States$10Mlast round Jan 2025
  35. 35SyntassoSyntasso 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
  36. 36Kilo CodeFounded -United States$8.0Mlast round Dec 2025
  37. 37Mermaid ChartBuilding the next generation of smart diagramming for enterprise teams.

    Building the next generation of smart diagramming for enterprise teams.

    Founded 2021San Francisco, United States$7.5Mlast round May 2025
  38. 38TensorZeroTensorZero is an open-source LLMOps platform designed for building, optimizing, and deploying large language model (LLM) applications.

    TensorZero is an open-source LLMOps platform designed for building, optimizing, and deploying large language model (LLM) applications.

    Founded -New York, United States$7.3Mlast round Aug 2025
  39. 39AppFlowyAppFlowy is an open-source workspace platform founded in November 2021, offering a privacy-first alternative to Notion.

    AppFlowy is an open-source workspace platform founded in November 2021, offering a privacy-first alternative to Notion.

    Founded 2022Singapore, Singapore$6.4Mlast round Nov 2023
  40. 40Gun.ioGun.io is a Nashville-based company that connects elite, vetted software developers with businesses for freelance, contract-to-hire, and full-time roles.

    Gun.io is a Nashville-based company that connects elite, vetted software developers with businesses for freelance, contract-to-hire, and full-time roles.

    Founded 2013Nashville, United States$5.2Mlast round Aug 2022
  41. 41Better AuthFounded -Ethiopia$5.0Mlast round Jun 2025
  42. 42KlothoKlotho is an open source tool enabling adaptive cloud applications through Architecture-from-Code and intelligent code transformations

    Klotho is an open source tool enabling adaptive cloud applications through Architecture-from-Code and intelligent code transformations

    Founded 2021Los Angeles, United States$4.5Mlast round Aug 2023
  43. 43BrunoDigital insurance advisor

    Digital insurance advisor

    Founded 2019United States$4.2Mlast round Aug 2026
  44. 44Hunted LabsHunted Labs is a software security company founded in 2023, with a public launch planned for 2025.

    Hunted Labs is a software security company founded in 2023, with a public launch planned for 2025.

    Founded 2023Austell, United States$3.0Mlast round Mar 2025
  45. 45ParseableFree and Open Source Log Storage and Observability Platform

    Free and Open Source Log Storage and Observability Platform

    Founded 2022United States$2.8Mlast round May 2024
  46. 46Vizor.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
  47. 47PearAIPear.ai is an energy-operations software company based in San Francisco, founded in 2016.

    Pear.ai is an energy-operations software company based in San Francisco, founded in 2016.

    Founded 2016San Francisco, United States$1.5Mlast round Dec 2024
  48. 48PrimalBringing content that matters to you.

    Bringing content that matters to you.

    Founded 2004Kitchener, United States$1.0Mlast round Jul 2023
  49. 49GitLinksGitLinks monitors open source usage for enterprise, identifying risks in security, licensing, and updating.

    GitLinks monitors open source usage for enterprise, identifying risks in security, licensing, and updating.

    Founded 2016Austin$235Klast round Oct 2017
  50. 50OhmDataOhmData is an open, simple, and scalable platform as a service that provides HBase support to some of the top early adopters of databases.

    OhmData is an open, simple, and scalable platform as a service that provides HBase support to some of the top early adopters of databases.

    Founded 2013United States$185Klast round Apr 2014
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.

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