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Requirements tool built for rapid development

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End-to-end traceability of requirements & design parameters from design to release
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The future of hardware is being built on Flow
Rivian
Joby
Astranis
Impulse Space
Stoke
Radiant Nuclear
Skydio
Mach Industries
Firehawk Aerospace
Antares Industries
Aalyria
Harbinger Motor
Long Wall
Hyphen
Gravitics
Space Machines Company
Turion Space
Openstar
Phase Four
Sunflower Labs

Iterate faster. Integrate your design tools with requirements for live V&V tracking.

Collaborate. Give engineers real ownership of requirements. Help everyone take a system first mindset.

collaborative

Parameterize. Convert text-based requirements into machine readable checks for budgets or actuals.

parametrise

Integrate. Drive parameters via API's or integrations for live V&V tracking.

integrate

Verify. Continuously verify your design on every major design change saving weeks of manual checks.

verify

Release. Generate reports for regulators with end to end design traceability.

release

Integrate, propagate and manage change in minutes

without flow

The next generation of complex hardware is built on Flow

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Lauch
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Automotive
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EVTOL
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Fusion
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Manufacturing
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Fission
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Propulsion
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Space
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Space
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Propulsion
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Automotive
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Aerospace
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Aerospace
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Drones
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Manufacturing
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Space Stations
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Autonomous security drones
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Defense
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Satellites
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Satellites
Flow is the requirements management tool of our dreams
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Flow is the requirements management tool of our dreams. It reflects how we work—fast, iterative, and focused on giving everyone a common, integrated view of our system.

Getting to CI/CD for systems is the dream. Flow is what finally got us there. It’s not just another tool, it’s the backbone of how we build now.

We’ve had new hires tell us, unprompted, ‘this is the best requirements tool I’ve ever used’. That says it all.

Ryan McCullough
Ryan McCullough
System Architect
There’s nothing on the market that compares
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We needed a tool that could keep up with the pace of our organization, adapt to the increasing complexity of our products, and remain easy to manage without full time dedicated resources. Flow has delivered.

Unlike many tools that disrupt workflows or create bottlenecks, Flow integrates successfully with how modern engineering teams operate. It’s fast, flexible, and scales with ease.

In my experience, there’s nothing on the market that compares.

Joe Barton
Joe Barton
Technical Program Manager
I have not found anything comparable to Flow in giving us flexibility without compromising functionality
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Before Flow, this meant juggling spreadsheets, duplicate docs, and months of rework. Now it just works. I have not found anything comparable to Flow in giving us flexibility without compromising functionality.

With Flow, all our requirements, design targets, and simulation data actually live in one place. That might not sound revolutionary—but if you’ve ever tried to do this in hardware, you know how painful it actually is.

Rajat
Rajat Kulshrestha
CEO & Co-Founder, Space Machines Company
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Built for cross-functional teams

Fast, iterative engineering meets seamless compliance

System Engineers
Chief Engineers
Responsible Engineers

System Engineers

Avoid chasing updates and wrangling disconnected data. Flow gives you a clear, connected system so you spend your time engineering, not coordinating. It keeps requirements current, shows how changes interact, and gives you real visibility into verification before reviews.

  • Always current requirements
  • One connected system view
  • Real time verification status
System Engineers

Flexible but powerful

Agile and scalable
Flow
Expensive legacy tools
Enterprise
ITAR Compliance
Continuous Verification
Baselines, config, history
Accessible & Collaborative
MBSE & Architecture
Fast, Flexible & Easy
Customization
Onboarding Time
Instant access & 14 days Full Implementation
60+ day onboarding plan
Integrations
Matlab, Python, PLM Simulation, Excel
Ansys, Matlab, some PLM
Approx cost (6 editors)
$1000/mo
$5000/mo

Security built in for high-stakes engineering and AI workflows

Built for Regulated Engineering
Built for Regulated Engineering
Flow is built for defense, aerospace, energy, and other industries with strict compliance needs. It can be configured for ITAR and export control, with support for data residency and sovereignty. You can deploy it as cloud SaaS, in GovCloud, or in a self hosted environment. It enables secure collaboration across mechanical, electrical, and software teams.
ITAR and CUI compliant
ITAR and CUI compliant
Flow meets the certifications and frameworks modern hardware teams rely on. ITAR and EAR alignment. NIST 800-171 and CUI support. SOC 2 Type II. ISO 27001. GDPR and CCPA compliance.
ITARGDPR compliantSOC2 compliant
Private and Secure AI by Design
Private and Secure AI by Design
Flow keeps your data inside your environment. All AI processing runs within controlled boundaries that protect your proprietary IP and meet strict security needs. You get clear visibility into suggestions and accepted changes, plus a full audit trail for every AI action. All AI runs with private inference, and no data is ever used for model training.

AI-native systems engineering platform for cross-functional teams

Flow is the AI native platform for modern systems engineering. Lightweight enough for fast iteration and rigorous enough for teams that need clear traceability.

We would love to connect and see how Flow supports complex hardware teams in practice.

Agile Systems Engineering Handbook

This guide is a modern alternative to INCOSE, based on recent, proven experience inside fastest-moving engineering teams. Built in collaboration with the world's fastest teams, it’s designed to support high-speed, real-world engineering needs.

Webinar: NASA’s Waterfall vs Agile Systems Engineering /w Anduril

A webinar with Adam Thurn, Chief Engineer of Space Missions at Anduril, on moving beyond NASA-style waterfall engineering. Real-world agile practices for faster iteration and tighter feedback loops.

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Providing new-age engineering companies with a requirements tool that is built specifically for their needs and allows them to focus on engineering ground breaking products.