What they do:
The control plane for AI agents.
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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 36 of 66
What they do:
A proactive desktop copilot. Clippy, but actually good.
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HQ: San Francisco, CA, United States
What they do:
Self-tuning search for products and files
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HQ: San Francisco, CA, United States
What they do:
The coding agent that actually collaborates with you
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HQ: San Francisco, CA, United States
What they do:
Code and browse in the same place
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HQ: San Francisco, CA, United States
What they do:
AI Legal OS
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HQ: Los Angeles, CA, United States
What they do:
AI support done right
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HQ: San Francisco, CA, United States
What they do:
Real-time web intelligence API for AI agents and GTM teams
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HQ: San Francisco, CA, United States
What they do:
Canva for short-form video ads
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HQ: San Francisco, CA, United States
What they do:
AI plug-in that automates HR immigration screening and compliance
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HQ: San Francisco, CA, United States
What they do:
Use Claude Code at 47% less cost in one line of installation.
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HQ: San Francisco, CA, United States
What they do:
AI that automatically improves products from user behavior
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HQ: San Francisco, CA, United States
What they do:
Claude Code for Mechanical Engineers
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HQ: San Francisco, CA, United States
What they do:
Datadog for Agent Reliability
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HQ: San Francisco, CA, United States
What they do:
Real time intelligence for law enforcement & security teams.
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HQ: San Francisco, CA, United States
What they do:
Detect what AI can automate for your team
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HQ: San Francisco, CA, United States
What they do:
AI teammates for logistics
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HQ: San Francisco, CA, United States
What they do:
Turning all software into agent-first APIs
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HQ: San Francisco, CA, United States
What they do:
Notion for AI chats
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HQ: San Francisco, CA, United States
What they do:
Enterprise post-training, monitoring, and continual learning platform
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HQ: San Francisco, CA, United States
What they do:
AI models that learn from experience
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HQ: San Francisco, CA, United States
What they do:
AI SRE agent that triages, coordinates, and fixes production incidents
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HQ: San Francisco, CA, United States
What they do:
AI agents that automate B2B software implementation
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HQ: San Francisco, CA, United States
What they do:
Scaling formal verification to accelerate scientific discovery
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HQ: San Francisco, CA, United States
What they do:
Infrastructure for Autonomous Science
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HQ: San Francisco, CA, United States
What they do:
Open-source Agentic Development Environment
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HQ: San Francisco, CA, United States
What they do:
Turn gatherings into lasting relationships.
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HQ: San Francisco, CA, United States
What they do:
API sandboxes, built for AI agents
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HQ: San Francisco, CA, United States
What they do:
The secure training data R&D engine for physical AI
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HQ: San Francisco, CA, United States
What they do:
Keeping contractors on the job site, not behind a desk.
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HQ: San Francisco, CA, United States
What they do:
Compression middleware that improves LLM outputs
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HQ: San Francisco, CA, United States
What they do:
Payments for Conversational Agents
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HQ: San Francisco, CA, United States
What they do:
API for performance-based payroll
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HQ: San Francisco, CA, United States
What they do:
Adversarial AI that breaks your AI
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HQ: San Francisco, CA, United States
What they do:
Using VLMs to Catch Damage
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HQ: San Francisco, CA, United States
What they do:
AI that runs factories.
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HQ: San Francisco, CA, United States