What they do:
Continuous AI pentesting that finds and fixes vulnerabilities
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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 53 of 96
What they do:
AI clerks that automate your payables
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HQ: San Francisco, CA, United States
What they do:
AI-native recruiting agency
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HQ: London, United Kingdom
What they do:
AI agents that recover lost revenue through real conversations.
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HQ: Mexico City, Mexico
What they do:
Expressive conversational AI
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HQ: San Francisco, CA, United States
What they do:
Lovable for mobile apps
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HQ: Thessaloniki, Greece
What they do:
Protect, monitor and defend your Internet presence
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HQ: New York, NY, United States
What they do:
Digital Twins of humans
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HQ: New York, NY, United States
What they do:
Team chat to command all your company's coding agents
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HQ: San Francisco, CA, United States
What they do:
AI agents for corporate accounting teams
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What they do:
Insurance risk layer for physical AI
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HQ: San Francisco, CA, United States
What they do:
AI for Corporate Security Cameras
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HQ: San Francisco, CA, United States
What they do:
The AI-Native Immigration Law Firm
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HQ: San Francisco, CA, United States
What they do:
Vanta for hardware
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HQ: San Francisco, CA, United States
What they do:
AI automations that implement themselves
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HQ: New York, NY, United States
What they do:
UI building blocks for the agentic internet
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HQ: San Francisco, CA, United States
What they do:
Financial infrastructure for the agent economy
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HQ: San Francisco, CA, United States
What they do:
LLM context compression for better accuracy
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HQ: San Francisco, CA, United States
What they do:
AI production engineer for regulated industries
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HQ: San Francisco, CA, United States
What they do:
Work with agents that already know you
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HQ: San Francisco, CA, United States
What they do:
Monitor and fix product privacy issues before they block growth
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HQ: London, United Kingdom
What they do:
AI Agents for Government Affairs
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HQ: San Francisco, CA, United States
What they do:
Frontier AI Defenses for Social Engineering Attacks
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HQ: San Francisco, CA, United States
What they do:
Evals, RL environments and training data for creative tasks
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HQ: San Francisco, CA, United States
What they do:
Intelligence for cultural institutions
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HQ: San Francisco, CA, United States
What they do:
Evals for humans
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HQ: San Francisco, CA, United States
What they do:
Autonomous operations for industrial distributors
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HQ: San Francisco, CA, United States
What they do:
Platform + FDEs that rebuild enterprises agent-first
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HQ: San Francisco, CA, United States
What they do:
Helping your company find 10x engineers.
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HQ: San Francisco, CA, United States
What they do:
Measure freight with security cameras
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What they do:
AI mobile app that helps factory technicians fix broken machines
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HQ: Germany
What they do:
AI agents that interviews every employee to hand context to AI tools.
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What they do:
We get your product picked by coding agents.
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What they do:
Autonomous Runtime Security
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What they do:
Forward-deployed AI Agents
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HQ: London, United Kingdom
What they do:
An open-source operating system for reliable long-running agents
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HQ: Boston, MA, United States