About onefive
onefive is the platform for the French startup ecosystem, built in Paris. What we are building, for whom, what we do not do, and who is behind it.
What onefive is
Building a company in France means living with five problems that have never had a shared home: finding someone who has been there to ask them a question, meeting the right people, sharing documents with investors without losing control of them, knowing what is happening in the ecosystem, and working out your dilution. Today all of that lives in a Drive, four WhatsApp groups, a Notion and two newsletters.
onefive puts those five things in one place, for the people building and the people funding. Founders, investors, business angels and mentors share a single environment rather than two separate products: a network of verified profiles, peer discussions, a permission-based dataroom, Spotlight (the directory of French incubators, accelerators, contests and events) and Le Tour de Table, the weekly newsletter of funding rounds.
onefive is a platform, not a fund: it does not invest and takes no share of the rounds that get done through it. The product is free, in French and English, and France is its first market. It is published by YC STRATEGIC VENTURES, a simplified joint-stock company founded in Paris in 2026 by Yannis Coulibaly.
The long-term ambition is simple to state: a register of the French startup economy (the companies, the investors, the programs), kept current, searchable, and owned by the people who make it.
Where this is going is on the Vision page.
Our Values
Verified over viral
Profiles are verified and conversations happen between founders at the same stage. We would rather have a hundred useful conversations than ten thousand followers.
The founder decides who sees what
The dataroom has no public URL: access is granted investor by investor, through signed links that expire, with a record of who read what.
One entry per thing, kept current
An incubator, a contest, an event, a funding round: each has its own entry, with a source and a date. No sponsored rankings.
Free, with nothing hidden
The full product costs €0. onefive does not invest, takes no share of the rounds raised, and does not sell its members' data.
Our Team
Yannis Coulibaly
💻 Software Engineer. 🌟 Passionate about coding, UX/UI, and entrepreneurship. 🌱 Building the next big startup.
Alex Gezer
Melvyn Fontaine
Code wizard 🪄 | Flutter enthusiast 🚀 | Crafting apps that work & look amazing ✨
