What is Onefive?
Onefive is a startup ecosystem platform founded in 2025. It connects founders, investors, and mentors in a single workspace.
Unlike fragmented tools, Onefive combines secure dataroom management, investor networking, and startup profile discovery. Documents, contacts, and traction data live in one place instead of five.
European tech companies raised around $44B in 2025, according to Atomico's State of European Tech. Yet most founders still run their raise across a spreadsheet, a file-sharing link, and a personal inbox. Onefive removes that friction.
The platform targets high-intent use cases: sharing a cap table during due diligence, sourcing warm investor intros, and publishing a verified startup profile investors can evaluate in minutes.
The ambition is global. The first market is Europe, which is why the product ships with English and French interfaces, GDPR-aligned document handling, and investor filters tuned to pre-seed through Series A stages.
The 3 Core Features
Every Onefive workspace is built around three pillars. Each pillar addresses a documented pain point in early-stage fundraising.
1. Secure Fundraising Dataroom
Onefive's dataroom keeps files in private storage, never behind a public URL, and serves each one through a signed link that expires in under a minute. Founders share sensitive documents (cap tables, financial models, pitch decks) with verified investors only.
Diligence is where a promising conversation stalls: a cap table nobody can reconcile, a model in three versions, an IP assignment that was never signed. Structured folders and per-document analytics help founders stay in control.
Investors see only the categories you grant. Legal, financial, and product folders stay separate. You can revoke access instantly when a conversation ends.
Document view analytics show which files investors open first. That signal helps founders prioritize follow-up and refine their narrative before the next meeting.
Version history and upload timestamps create an audit trail for your board and legal counsel. No more 'which cap table is current?' emails during a live process.
2. Investor & Mentor Network
Onefive gives founders access to a curated network of investors and mentors. Profiles are verified so you connect with real decision-makers, not empty LinkedIn profiles.
The matching algorithm surfaces relevant connections based on sector, stage, and geography, so the time otherwise spent on cold outreach and spreadsheet tracking goes into conversations that can actually convert.
A warm introduction from someone who already backed a company like yours outperforms a cold email, which is why Onefive routes you toward investors active in your space rather than at a directory of names.
Mentors and advisors join the same graph. Portfolio companies, accelerators, and angel syndicates use shared spaces to coordinate intros without email chains.
Sector tags span fintech, SaaS, climate tech, healthtech, and deep tech. Stage filters cover pre-seed, seed, and Series A so every intro starts with aligned expectations.
3. Startup Profile & Discovery
Create a verified startup profile visible to the Onefive investor community. Profiles include traction metrics, team bios, funding history, and your current raise status.
DocSend measured the average VC visit to a seed pitch deck at 3 minutes 44 seconds, and its 2023 index put seed deck review times under two minutes. Onefive profiles surface the data points investors scan first: team, market, traction, and round size.
Discovery works both ways. Investors filter by stage, sector, and geography to build a qualified pipeline. Founders gain visibility without posting on ten different platforms.
Profiles sync with your dataroom permissions. When an investor requests access, they already understand your story. Due diligence starts faster and with fewer repetitive questions.
Public-facing profile fields stay separate from confidential dataroom files. You control exactly what is discoverable versus what requires an explicit access grant.
How the Fundraising Workflow Works on Onefive
Onefive mirrors how a professional raise actually runs, from first intro to signed term sheet. The workflow below is the same for pre-seed, seed, and Series A founders.
Accelerators and studios can onboard entire cohorts. Each company gets an isolated workspace while program managers retain portfolio-level visibility.
The average seed round in Europe takes 4–6 months from first meeting to close. Founders who arrive with organized datarooms and warm intros compress that timeline. Onefive is designed around that reality.
For cheque sizes, dilution, and conversion rates at each stage, read Startup Funding Stages Explained.
- Build your startup profile with team, traction, and funding history.
- Upload due diligence documents into categorized dataroom folders.
- Receive matched investor and mentor recommendations based on your sector and stage.
- Share dataroom access with granular permissions per investor or firm.
- Track document views and engagement to prioritize follow-ups.
- Close your round with audit-ready document history in one place.
Who Uses Onefive?
Onefive serves every role in the early-stage ecosystem. Each audience gets tools tuned to their workflow.
- Early-stage founders, Raising pre-seed to Series A rounds across European tech. Replace DocSend, spreadsheets, and inbox chaos with one workspace.
- Angel investors, Sourcing qualified deal flow in fintech, SaaS, climate, and deep tech. Filter by stage and geography before requesting dataroom access.
- Accelerator programs, Managing cohort companies, tracking fundraising progress, and making warm intros to your LP and mentor network.
- Mentors & advisors, Offering expertise to portfolio companies with visibility into their raise status and document readiness.
Why Founders Choose Onefive Over Fragmented Tools
Most founders stack DocSend for documents, LinkedIn for intros, Notion for notes, and spreadsheets for investor tracking. Each tool solves one slice of the raise. None of them share context.
Context switching costs real time during an active raise, when the same document is requested by four investors in four different threads. Onefive consolidates dataroom, CRM, and discovery into one login.
Security matters when you share cap tables and financial models. A generic file-sharing link is forwardable and hard to take back. Onefive applies per-investor permissions, expiring signed links, and revocation on the link itself.
Investors benefit too. One profile, one dataroom request flow, and consistent document naming mean faster evaluation cycles. That efficiency is why both sides of the market adopt unified platforms.
Average VC visit to a seed deck (DocSend)
Median European seed round, Q1 2025 (PitchBook)
European seed companies reaching Series A (Dealroom)
European tech investment in 2025 (Atomico)
Frequently Asked Questions
What is Onefive?+
Onefive is a startup ecosystem platform connecting founders, investors, and mentors with tools including a secure dataroom, networking features, and startup profiles.
How does Onefive's dataroom work?+
Onefive's dataroom keeps files in private storage and serves them through short-lived signed links, with permissions set per group and per category. View-only PDFs are watermarked with the viewer's name, email, and timestamp.
Who is Onefive for?+
Onefive serves early-stage founders raising pre-seed to Series A rounds, angel investors sourcing European deal flow, accelerator programs managing cohorts, and mentors advising portfolio companies.
How does Onefive match founders with investors?+
Onefive surfaces relevant connections based on sector, stage, and geography. Verified startup profiles and investor preferences feed the matching algorithm so founders spend less time on cold outreach.
Is Onefive free?+
Onefive is currently free during pre-launch. Join the waitlist from the homepage to get early access when your workspace opens.
Where is Onefive based?+
Onefive was founded in 2025 and is headquartered in Paris, France. The platform is available in English and French.
Ready to centralize your fundraise?
Join the Onefive waitlist for early access to the dataroom, investor network, and startup profiles.
