Xavier Niel
What they invest in
from 5 of 5 portfolio companiesAI & Machine Learning ×3SaaS ×3Cleantech ×1Climate Tech ×1Construction Tech ×1Developer Tools ×1Digital Health ×1Enterprise Software ×1
HQs:France×4
Investments · 5 tracked
founders shown can be your intro pathFollow 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)Steven Kavay(CEO)
Co-investorsKima Ventures
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
Co-investorsFrstKima VenturesSummit Partners
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)Laurent Sifre(Founder)
Co-investorsAccelCreandumDaphniFirstMark CapitalPolytechnique VenturesSamsung Next+4 more
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 VenturesSE VenturesY Combinator
Portfolio news
latest coverage across their companiesUpstream · ndtvprofit.com · Aug 18, 2026
Follow · thenextweb.com · Aug 14, 2026
Frequently asked questions
- What sectors does Xavier Niel focus on?
- Xavier Niel focuses on Crypto & Web3.
Similar investors
AirTree Ventures runs Pathfinders, a free four-week in-person program in Sydney for young builders (high-school graduates up to age 23) to work on a real product, access the AirTree team and founders, and build a peer network.
Andreessen Horowitz (a16z) is a venture capital firm founded in 2009 by Marc Andreessen and Ben Horowitz, known for pioneering the platform model with a large team of operators supporting founders across stages.
Atomico is an international venture capital firm that invests in growth-stage technology companies across multiple geographies. The firm focuses on scaling disruptive technology businesses globally.
August Capital is a venture capital firm that invests in a small number of companies, providing hands-on support to entrepreneurs building their businesses.
.jpeg){kind=logo}
B Capital is a global investment firm backing early to late-stage technology innovators across technology, healthcare, and energy & resilience sectors.