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D3 | RoundOS

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

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Startups Venture capital M&A data room Investor relations

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Sales deals Board documents Due diligence Real estate

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Fundraising hub Pre-seed Seed Series A

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

Sign inExploreData Room AI Fundraising CRM Pricing Security Document Analytics Pitch Deck TrackingData Room featuresData room analytics Secure sharing Permissions NDA & agreements Watermarking Versions BrandingUse casesFundraising hub Startups Venture capital M&A data room Investor relations Sales deals Board documents Due diligence Real estate Pre-seed Seed Series AOperatorToday & next moves Follow-up Investor research Investor CRM Investor updates Imports & sourcesMoreCustomer stories All alternatives Best free data rooms Investor room template Free tools Blog Funding Integrations

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D

D3

Activity from announced rounds

Activity in this selection View all activity

Activity in this selectionDefense tech

Rounds participated in: 1
Confirmed lead rounds: —
New companies: 1
Funding in participating rounds: $30M

By stage

Undisclosed1

By primary sector

Defense tech1

By country

United Kingdom1

Rounds

1 in this selection

Jul 29

Building virtual battlefields for AI-powered autonomous weapons training

$30MPre-Seed+Seed

Role not disclosed

1–1 of 1

Most frequent co-investors

201 Ventures1 shared Lakestar1 shared Lux Capital1 shared Northzone1 shared XYZ1 shared

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RoundOS

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

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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