What they do:
Struct keeps prod running
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HQ: San Francisco, CA, United States
Top B2B Startups
This list has 3,431 startups and was last updated on Oct 15, 2026. 897 of them are hiring right now. Biggest hubs: San Francisco (1,811), New York (387), and London (120). Largest teams: Deel, 99minutos, and GrubMarket. Latest round: Onebrief raised $151M (Oct 14, 2026).
3,431 startupsPage 52 of 96
What they do:
AI powered debugging notebooks for incident response
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HQ: San Francisco, CA, United States
What they do:
Building AI systems that improve from experience.
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HQ: San Francisco, CA, United States
What they do:
Hire amazing engineers by seeing how they use AI
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HQ: San Francisco, CA, United States
What they do:
A foundation model for physics.
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HQ: San Francisco, CA, United States
What they do:
Fast and Data-Driven Immigration Platform
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HQ: San Francisco, CA, United States
What they do:
PCB component librarian
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HQ: Zürich, Switzerland
What they do:
Protect and Grow Long-tail Revenue
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HQ: San Francisco, CA, United States
What they do:
AI Voice Translation for live conversations or media
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HQ: Spain
What they do:
Test, monitor, and improve your voice agents
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HQ: San Francisco, CA, United States
What they do:
Continual Learning for Agents
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HQ: San Francisco, CA, United States
What they do:
Open Source React.js Library for AI Chat
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HQ: San Francisco, CA, United States
What they do:
Custom models trained on your data
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HQ: San Francisco, CA, United States
What they do:
Creator marketing that scales like paid ads
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HQ: San Francisco, CA, United States
What they do:
We automate your entire product development lifecycle.
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HQ: San Francisco, CA, United States
What they do:
Open-source frontier models for knowledge work
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HQ: San Francisco, CA, United States
What they do:
AI-native financial institution for global businesses + agents.
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HQ: New York, NY, United States
What they do:
Understand your users beyond the numbers
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HQ: San Francisco, CA, United States
What they do:
A personal EA in your iMessage
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HQ: San Francisco, CA, United States
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Specialized AI for Critical Industries
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HQ: San Francisco, CA, United States
What they do:
Automatically write and update internal docs with every code commit.
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HQ: San Francisco, CA, United States
What they do:
Self-Driving CI: fast AI-native GitHub Actions runners
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HQ: San Francisco, CA, United States
What they do:
Build and ship native Swift apps with AI
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HQ: San Francisco, CA, United States
What they do:
Cursor for Email
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HQ: San Francisco, CA, United States
What they do:
Building medical school for AI Agents
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HQ: San Francisco, CA, United States
What they do:
Context-aware orchestration between humans and AI.
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HQ: London, United Kingdom
What they do:
AI content manager that grows your company's online presence
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HQ: San Francisco, CA, United States
What they do:
The AI notepad that knows and works for you
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HQ: Seoul, South Korea
What they do:
AI Agents for E-commerce Customer Support
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HQ: Amsterdam, Netherlands
What they do:
Truckload Planning at Machine Precision
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HQ: San Francisco, CA, United States
What they do:
AI-native software for managing rail and bulk operations.
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HQ: Olathe, KS, United States
What they do:
AI employees trained on your firm's workflows.
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HQ: San Francisco, CA, United States
What they do:
The makers of Klex Bots, your own team of digital coworkers.
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What they do:
Production infrastructure on autopilot
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HQ: San Francisco, CA, United States
What they do:
Digital transformation for real economy businesses
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HQ: San Francisco, CA, United States
What they do:
Studio-Grade Design at Scale
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HQ: San Francisco, CA, United States