What they do:
AI agents to automate corporate transactions
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HQ: San Francisco, CA, United States
Top B2B Software Startups in California
This list has 2,349 startups and was last updated on Oct 15, 2026. 592 of them are hiring right now. Biggest hubs: San Francisco (2,110), Los Angeles (79), and San Diego (12). Largest teams: Stripe, Deel, and GrubMarket. Latest round: Modal raised $750M (Oct 14, 2026).
2,349 startupsPage 34 of 66
What they do:
Forward Deployed Research Services
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HQ: San Francisco, CA, United States
What they do:
The platform for automated hiring and workforce decisions.
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HQ: San Francisco, CA, United States
What they do:
Prompt and Context Optimization for Coding Agents
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HQ: San Francisco, CA, United States
What they do:
AI documentation engineer – test & autoimprove stale product docs
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HQ: San Francisco, CA, United States
What they do:
Environments for Long Horizon Work
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HQ: San Francisco, CA, United States
What they do:
We help companies win government funding with AI
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HQ: San Francisco, CA, United States
What they do:
Lovable for Chrome Plugins
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HQ: San Francisco, CA, United States
What they do:
The agentic AI Word editor
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HQ: San Francisco, CA, United States
What they do:
Zero code network tracer
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HQ: San Francisco, CA, United States
What they do:
AWS for AI Agents
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HQ: San Francisco, CA, United States
What they do:
The AI Maximalist Software Holding Company
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HQ: San Francisco, CA, United States
What they do:
Outbound Sequencing Infrastructure for Startups
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HQ: San Francisco, CA, United States
What they do:
The social network layer for AI apps
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HQ: San Francisco, CA, United States
What they do:
AI personal assistant for in-home sales
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HQ: San Francisco, CA, United States
What they do:
The health coach that texts you first
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HQ: San Francisco, CA, United States
What they do:
Build internal tools with AI
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HQ: San Francisco, CA, United States
What they do:
AI agents for conversational commerce
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HQ: San Francisco, CA, United States
What they do:
Headless Data Team
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HQ: San Francisco, CA, United States
What they do:
Foundational model research
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HQ: San Francisco, CA, United States
What they do:
AI Employees for Hotels
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HQ: San Francisco, CA, United States
What they do:
Building agents that reads logs and fixes issues on your behalf.
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HQ: San Francisco, CA, United States
What they do:
We turn traditional companies into AI companies
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HQ: San Francisco, CA, United States
What they do:
Embedded Sandboxes for Agents
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HQ: San Francisco, CA, United States
What they do:
Agent teams for complex work
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HQ: San Francisco, CA, United States
What they do:
Execute the best sales playbook in industry
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HQ: San Francisco, CA, United States
What they do:
The fastest native app for agentic engineering.
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HQ: San Francisco, CA, United States
What they do:
RWE Generation in minutes
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HQ: San Francisco, CA, United States
What they do:
Simulation Engine for Benchmarking AI Products
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HQ: San Francisco, CA, United States
What they do:
Let your agent build dashboards and reporting.
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HQ: San Francisco, CA, United States
What they do:
The data gateway for agents.
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HQ: San Francisco, CA, United States
What they do:
AI agents that help you understand your customers' needs
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HQ: San Francisco, CA, United States
What they do:
Reinforcement learning as a service
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HQ: San Francisco, CA, United States
What they do:
AI workers for Skilled Nursing and Senior Living Operations
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HQ: San Francisco, CA, United States
What they do:
Abundant Intelligence for Everyone
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HQ: San Francisco, CA, United States
What they do:
Building reinforcement learning environments
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HQ: San Francisco, CA, United States