/Investor DB

Xavier Niel — Full Portfolio

10 tracked investments · listed companies and verified rows first

Followfollow.frin✓ verified

Follow is a medical software platform for physicians in France and Europe to track patient care pathways, share information between practitioners, and support medical research.

Digital HealthHealthtechSaaS

Roman Collin(Founder)inSteven Kavay(CEO)in

Co-investorsFelicis VenturesKima Ventures

AI-powered legal databasedoctrine.frin𝕏Jun 2018 · $11.6M

Doctrine is a secure legal research and document workspace that combines public legal data with users' own documents and integrates into everyday tools like Microsoft Word, SharePoint, Google Drive, and Dropbox.

AI & Machine LearningLegalTechSaaS

Antoine Dusséaux(Founder)Nicolas Bustamante(Founder)inRiver Champeimont(Founder)

Co-investorsFrstKima VenturesSummit Partners

AMI Labsamilabs.xyzMar 2026

AMI Labs develops advanced AI systems that understand the real world through world models and action-conditioned architectures, enabling intelligent agents with persistent memory, reasoning, and safety controls for industrial automation, robotics, and healthcare applications.

AI & Machine LearningDeep TechRoboticsParis, FR

Yann LeCun(Founder)Alex LeBrun(Founder)inLaurent Solly(Founder)inMichael Rabbat(Founder)inPascale Fung(Founder)inSaining Xie(Founder)in

Co-investors20VCAglae VenturesAlpha Intelligence CapitalAlpha Square GroupAvenir Growth CapitalBerliner Volksbank Ventures+52 more

Dfnsdfns.coin𝕏Apr 2022

DFNS provides wallet-as-a-service infrastructure for financial institutions, fintech platforms, and digital asset management.

Crypto & Web3CybersecurityData & InfrastructureEnterprise SoftwareFintechParis, FR

Clarisse Hagège(Founder)inChristopher Grilhault des Fontaines(Founder)inClarisse Hagege(Founder)

Co-investorsTechstarsWhite Star CapitalWintermuteHashed6th Man VenturesCoinbase Ventures+10 more

H Companyhcompany.aiin𝕏May 2024

HoloTab is a browser extension that uses AI agents to automate repetitive tasks for individuals and enterprises, allowing users to create routines that automate manual work.

AI & Machine LearningDeveloper ToolsEnterprise SoftwareParis, FR

Julien Perolat(Founder)inLaurent Sifre(Founder)inCharles Kantor(Founder)inCharles Kantor Laurent Sifre(Founder)Daan Wierstra(Founder)Karl Tuyls(Founder)

Co-investorsAccelCreandumDaphniElaiaFirstMark CapitalMotier Ventures+10 more

Hemeahemea.comin𝕏

hemea is a France-based brokerage and management service for home architecture and renovation projects, connecting clients with vetted contractors and over 100 dedicated experts who oversee work from design to final delivery.

Construction TechMarketplacesPropTech

Matthieu Burinin

Co-investorsDaphniKima VenturesSonorcap

Kinetixkinetix.techin𝕏May 2022

Kinetix is an AI research company that combines 3D and machine learning to understand and generate human motion, building generative models for character animation, human pose estimation, and video generation.

AI & Machine LearningDeep TechGamingMedia & EntertainmentParis, FR

Yassine Tahi(CEO)inHenri Mirande(CTO)in

Co-investorsDiaspora VenturesEntrepreneur FirstKima VenturesAnimoca BrandsSparkle VenturesTop Harvest Capital+2 more

Mistral AImistral.aiin𝕏Jun 2023

Mistral builds and open-sources frontier AI models, developer tools, and applications for organizations in finance, manufacturing, defense, energy, and the public sector to solve complex problems.

AI & Machine LearningCloud ComputingDeveloper ToolsEnterprise SoftwareParis, FR

Arthur Mensch(Founder)inGuillaume Lample(Founder)inTimothee Lacroix(Co-founder and CTO)inTimothée Lacroix(Founder)

Co-investors83NorthAndreessen HorowitzBalderton CapitalCisco InvestmentsConvictionElad Gil+46 more

Pennylanepennylane.comin𝕏

Pennylane is a financial and accounting management platform.

Enterprise SoftwareFintechSaaSParis, FR

Arthur Waller(Founder)inEdouard Mascré(Founder)inFélix Blossier(Founder)inQuentin de Metz(Founder)inTancrède Besnard(Founder)inThierry Déo

Co-investorsCapitalGDiscovery Ventures III Gmb H & Co. KGKima VenturesPartech VenturesSequoia CapitalTCV+19 more

Upstream Techupstream.techinJun 2026 · $3M

Upstream Tech builds software for land and water management, including its Lens (geospatial monitoring) and HydroForecast (hydrological forecasting) products.

AI & Machine LearningCleantechClimate TechSaaS

Marshall Moutenot(Chief Executive Officer)Alden Keefe Sampson(Chief Technology Officer)Carolyn duPont(Chief Commercial Officer)

Co-investorsENGIE New VenturesJapan Energy CapitalSE VenturesY Combinator

Rows marked “SEC filing” are inferred from directors named on the company's SEC Form D — public regulatory data, not a portfolio list published by the firm.