
Windmill
What they do:
Open-source platform to turn scripts into internal apps & workflows
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This list has 1,491 startups and was last updated on Oct 15, 2026. Biggest hubs: San Francisco (784), New York (242), and London (57). Largest teams: DoorDash, Stripe, and EquipmentShare. Latest round: HyLight raised €13M (Oct 12, 2026).

What they do:
Open-source platform to turn scripts into internal apps & workflows
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Creating genre-defining multiplayer VR games.
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HQ: San Francisco, CA, United States

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Building infrastructure tools to help large companies customize their…
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HQ: San Francisco, CA, United States

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The leading AI workforce for the trades.
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HQ: Lehi, UT, United States

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Ohm helps engineering teams accelerate hardware development & testing.
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HQ: San Francisco, CA, United States

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AI-Powered Clinical Decision Support & Ambient Scribing
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Models and infra for coding agents
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HQ: San Francisco, CA, United States

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Project management software for building infrastructure.
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HQ: New York, NY, United States

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We help global software companies comply with local tax reporting
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Manage energy cost & usage with AI for facility & sustainability teams
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HQ: San Francisco, CA, United States

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AI-driven Retention Automation for subscription media businesses.
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HQ: Copenhagen, Denmark

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AI research center for retrieval
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HQ: San Francisco, CA, United States

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The RFP Platform Asset Managers Adopt
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AI-powered forecasting & replenishment for grocery
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HQ: New York, NY, United States

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Agent-Driven Engineering
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HQ: San Francisco, CA, United States

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Validated mental health support in your pocket, anytime.
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HQ: San Francisco, CA, United States

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Delightful robots
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HQ: New York, NY, United States

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The developer platform for fast and reliable browser agents
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HQ: San Francisco, CA, United States

What they do:
Practice admin run by AI
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Robots to Automate Fulfillment
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HQ: Los Angeles, CA, United States

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Authoring documents for life sciences in minutes, not months.
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HQ: San Francisco, CA, United States

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AI native freight forwarder and customs broker
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HQ: New York, NY, United States

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Cargo Theft and Fraud Prevention Platform
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HQ: San Francisco, CA, United States

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The Enablement Layer for Physical AI
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HQ: San Francisco, CA, United States

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GPS Denied Navigation for Drones
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HQ: San Francisco, CA, United States

What they do:
Use AI tools without fear of data leakage
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HQ: San Francisco, CA, United States

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The voice interface replacing your keyboard
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HQ: San Francisco, CA, United States

What they do:
Foundation models for time series
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AI Native Consumer Loan Servicer
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HQ: New York, NY, United States

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AI avatars to scale healthcare training.
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HQ: New York, NY, United States

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Agent simulation and RL for researchers
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HQ: San Francisco, CA, United States

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Personal AI Robots
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HQ: San Francisco, CA, United States

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24/7 satellite connectivity in low Earth orbit
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HQ: San Francisco, CA, United States

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The LLM Eval and Observability Platform for AI Quality
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HQ: San Francisco, CA, United States

What they do:
Agents that use the browser.
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HQ: San Francisco, CA, United States

What they do:
AI agents for insurance claims operations
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HQ: New York, NY, United States