Freebuff
Hiring
What they do:
The free coding agent
Quick facts:
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 18 of 66
Unusual
Hiring
What they do:
Market to AI agents
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HQ: San Francisco, CA, United States
SubImage
Hiring
What they do:
The Open-Core Security Graph
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HQ: San Francisco, CA, United States
Adam
Hiring
What they do:
AI Powered CAD
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HQ: San Francisco, CA, United States
Infinite
Hiring
What they do:
Global B2B Stablecoin Processor
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HQ: San Francisco, CA, United States
Peppr AI
Hiring
What they do:
In-call AI teleprompter that helps reps close enterprise deals
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HQ: San Francisco, CA, United States
Artifact
Hiring
What they do:
An Collaborative, AI-native IDE for Hardware Engineers
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HQ: Los Angeles, CA, United States
What they do:
Stablecoin API for global payments
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HQ: San Francisco, CA, United States
Aravolta
Hiring
What they do:
Software to monitor, control, and optimize data centers.
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HQ: San Francisco, CA, United States
Theorem
Hiring
What they do:
Program verification so even your systems engineers can vibecode
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HQ: San Francisco, CA, United States
TraceRoot.AI
Hiring
What they do:
Open Source AI Agent Improvement Platform
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HQ: San Francisco, CA, United States
Imprezia
Hiring
What they do:
The World's First AI Ad Network.
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HQ: San Francisco, CA, United States
ProcIndex
Hiring
What they do:
AI-powered accounting automation for construction and manufacturing
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HQ: San Francisco, CA, United States
Floot
Hiring
What they do:
The app platform inside Claude and ChatGPT.
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HQ: San Francisco, CA, United States
Nautilus
Hiring
What they do:
AI platform to grow and to optimize car washes
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HQ: San Francisco, CA, United States
Sira
Hiring
What they do:
AI Native Rippling for Deskless Workers
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HQ: San Francisco, CA, United States
Deeptrace
Hiring
What they do:
AI agents for on-call
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HQ: San Francisco, CA, United States
Zarna
Hiring
What they do:
AI Associates for Middle-Market Private Equity
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HQ: San Francisco, CA, United States
Superset
Hiring
What they do:
Building self-improving software
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HQ: San Francisco, CA, United States
Booko
Hiring
What they do:
Dynamically pricing the whole economy.
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HQ: San Francisco, CA, United States
primitive
Hiring
What they do:
communication for agents
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HQ: San Francisco, CA, United States
OpenWork
Hiring
What they do:
The open source alternative to Claude Cowork
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HQ: San Francisco, CA, United States
CharacterQuilt
Hiring
What they do:
Computer use agents to deploy enterprise marketing campaigns
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HQ: San Francisco, CA, United States
COACH
Hiring
What they do:
The AI Coach for in person sales reps.
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HQ: San Francisco, CA, United States
Netomi
Hiring
What they do:
Self-Driving Customer Care
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HQ: San Francisco, CA, United States
What they do:
using ultrasonics + ml to analyze fluid behavior at infrastructure…
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HQ: San Francisco, CA, United States
Dyneti Technologies
Hiring
What they do:
Reduce payment fraud
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HQ: San Francisco, CA, United States
What they do:
Scalable validation infrastructure for AI agents
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HQ: San Francisco, CA, United States
What they do:
Organizing the world's inventory.
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HQ: San Francisco, CA, United States
What they do:
No-code business app builder
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HQ: San Francisco, CA, United States
What they do:
Cloud and Container Security Platform
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HQ: San Francisco, CA, United States
Versable
Hiring
What they do:
AI powered product description enhancement for the auto parts industry
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HQ: San Francisco, CA, United States
MSPilot
Hiring
What they do:
Turn AI adoption into a recurring revenue line.
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HQ: San Francisco, CA, United States
Poly
Hiring
What they do:
Intelligent Personal Cloud Storage
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HQ: San Francisco, CA, United States
What they do:
Relationship Coverage for Deal Teams
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HQ: San Francisco, CA, United States
Solum Health
Hiring
What they do:
AI Automation for Therapy Practices
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HQ: San Francisco, CA, United States