Boilerplate
Two lengths, both cleared for publication. Please keep the capitalisation as written.
Onefive is a startup ecosystem platform that brings a secure fundraising dataroom, a verified startup profile, and a network of investors and mentors into a single workspace. Founded in 2025 and based in Paris, it is available in English and French.
Onefive is a startup ecosystem platform for founders raising pre-seed to Series A rounds. It brings together three things founders usually spread across separate tools: a fundraising dataroom with per-group permissions and per-file view tracking, a verified startup profile investors can review, and a network of investors and mentors matched by sector and stage. Founded in 2025 by Yannis Coulibaly and based in Paris, Onefive ships in English and French, handles documents in line with the GDPR, and is currently in pre-launch with access through a waitlist.
Company facts
- Product name
- Onefive
- Legal entity
- YC STRATEGIC VENTURES, SAS
- Founded
- 2025
- Headquarters
- 229 rue Saint-Honoré, 75001 Paris, France
- Trade register
- RCS Paris 103 274 072
- President
- Yannis Coulibaly
- Languages
- English and French
- Stage
- Pre-launch, access through a waitlist
- Website
- www.onefive.app
What Onefive does
Three capabilities, all shipped. Investor updates and a pipeline CRM are on the roadmap and are not available today.
- Fundraising dataroom
Files are held in private storage and served through short-lived signed links, with permissions set per group and per category. View-only PDFs carry a watermark with the viewer's name, email, and timestamp, and every file records its own views.
- Verified startup profile
A public profile covering team, market, traction, and current round, kept separate from the confidential dataroom so founders control exactly what is discoverable.
- Investor and mentor network
Profiles are verified, and matching runs on sector, stage, and geography rather than on a purchased contact list.
Logo files
Naming
- Write Onefive as one word with a capital O and a lowercase f. Not OneFive, not One Five, not ONEFIVE.
- The company behind the product is YC STRATEGIC VENTURES. Use Onefive when referring to the product or the platform.
- Onefive is a platform, not a fund. It does not invest and does not take a share of the rounds raised through it.
Press contact
We answer press requests directly, including interview and review-access requests ahead of launch.
support@onefive.app · Contact form
