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Sisyphus | RoundOS

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

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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

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

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S

Sisyphus

Activity from announced rounds

Activity in this selection View all activity

All recorded activity

Rounds participated in: 1
Confirmed lead rounds: —
New companies: 1
Funding in participating rounds: $5.4M

By stage

Pre-seed1

By primary sector

Defense tech1

By country

Norway1

Rounds

1 in all activity

Apr 15

Develops AI-driven defence systems for drone detection and tracking

$5.4MPre-Seed

Role not disclosed

1–1 of 1

Most frequent co-investors

ACME1 shared Andøya Ventures1 shared Antler1 shared Off Piste1 shared RainFall1 shared SkyFall1 shared StartupLab1 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