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Seven Stars | RoundOS

01 · Free data roomBuild, share and track important documents.

Data room analytics Document Analytics Pitch Deck Tracking Secure sharing Permissions NDA & agreements Watermarking Versions Branding

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02 · AI Fundraising CRMRun the work between investor meetings.

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Deal rooms

Startups Venture capital M&A data room Investor relations

Beyond fundraising

Sales deals Board documents Due diligence Real estate

Fundraising

Fundraising hub Pre-seed Seed Series A

Learn

Blog Funding News Customer stories Investor room template

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All alternatives Best free data rooms Best DocSend alternatives Digify alternative iDeals alternative

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Calculators and fundraising tools. No signup.

SAFE, dilution, runway, pipeline coverage, investor fit.

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Seven Stars

Activity from announced rounds

Activity in this selection View all activity

Activity in this selectionOct 6, 2026 · Hardware · Jul 9, 2026

Rounds participated in: 1
Confirmed lead rounds: —
New companies: 1
Funding in participating rounds: $35M

By stage

Series A1

By primary sector

Climate tech1

By country

United States1

Rounds

1 in this selection

Aug 26

Develops aluminum-based fuel and electrochemical generator for clean firm power

$35MSeries A

Role not disclosed

1–1 of 1

Most frequent co-investors

Energy Impact Partners1 shared Founders Fund1 shared John Doerr1 shared Mantis VC1 shared Overmatch1 shared StepStone1 shared

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RoundOS

A free data room for modern deals, with an AI operator that runs the fundraise.

Create a free room

01 · Explore

Data Room AI Fundraising CRM Pricing Security Document Analytics Pitch Deck Tracking

02 · Data Room

Data room analytics Secure document sharing Data room permissions NDA & agreements Dynamic watermarking Document versions Custom branding

03 · Operator

Fundraising hub Pre-seed fundraising Seed fundraising Series A fundraising Fundraising follow-up Investor research Investor updates Integrations

04 · Use cases

Startup data room VC and LP data room M&A data room

Due diligence data room

Investor relations

Sales data room

Board documents

Real estate data room

05 · Free tools

All free tools SAFE calculator Dilution calculator Runway calculator Pipeline coverage Investor fit checker Follow-up generator Round leak audit

06 · Resources

All alternatives DocSend alternative Digify alternative Google Drive alternative Dropbox alternative Best DocSend alternatives Best free data rooms Investor room template Blog Customer stories Funding News Open a live room

© 2026 RoundOS · Data Room free forever · Operator from $99/month