What they do:
The open source tool gateway
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HQ: San Francisco, CA, United States
Top Startups in San Francisco
This list has 3,173 startups and was last updated on Oct 15, 2026. 784 of them are hiring right now. Largest teams: DoorDash, Stripe, and Airbnb. Latest round: Modal raised $750M (Oct 14, 2026).
3,173 startupsPage 56 of 89
What they do:
AI that finds and fixes OS-level vulnerabilities across device fleets
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HQ: San Francisco, CA, United States
What they do:
Combining open-source AI models for better answers at lower cost
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HQ: San Francisco, CA, United States
What they do:
Monetize your agent's traces.
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HQ: San Francisco, CA, United States
What they do:
Helping bond investors find what's rich or cheap, and why
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HQ: San Francisco, CA, United States
What they do:
Force-sensing wristband for training robotic AI
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HQ: San Francisco, CA, United States
What they do:
Actuators for Physical AI
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HQ: San Francisco, CA, United States
What they do:
Catch wrong LLM answers before your customers do
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HQ: San Francisco, CA, United States
What they do:
Android for drones
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HQ: San Francisco, CA, United States
What they do:
Helps build social skills through daily practice
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HQ: San Francisco, CA, United States
What they do:
Physical intelligence for every decision with Geospatial AI.
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HQ: San Francisco, CA, United States
What they do:
Always-on AI security engineer
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HQ: San Francisco, CA, United States
What they do:
Analytics stack for omnichannel retailers and brands
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HQ: San Francisco, CA, United States
YC W14Early stage
What they do:
We make Privacy Software for SMBs.
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HQ: San Francisco, CA, United States
What they do:
Marketplace & Software Revolutionizing Yard Care
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HQ: San Francisco, CA, United States
YC W16Early stage
What they do:
Customized fertility benefits for modern companies.
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HQ: San Francisco, CA, United States
YC S17Growth stage
What they do:
We help retailers and restaurant chains manage repairs and…
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HQ: San Francisco, CA, United States
YC S18Early stage
What they do:
Investing in innovation
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HQ: San Francisco, CA, United States
What they do:
Eclipse Foods is building the future of dairy using micelles, the…
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HQ: San Francisco, CA, United States
YC W19Growth stage
What they do:
AI platform accelerating therapies for rare & inflammatory diseases.
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HQ: San Francisco, CA, United States
YC S19Early stage
What they do:
Avion builds and operates autonomous eVTOL drones that deliver vital…
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HQ: San Francisco, CA, United States
YC W20Early stage
What they do:
Get up and running with large language models.
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HQ: San Francisco, CA, United States
YC W21Growth stage
What they do:
Online University for Tech Professionals
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HQ: San Francisco, CA, United States
What they do:
Easy accounting for e-commerce
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HQ: San Francisco, CA, United States
YC S21Early stage
What they do:
Remote Shell Access in the Browser
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HQ: San Francisco, CA, United States
YC W23Early stage
What they do:
AI operating system for veterinary care
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HQ: San Francisco, CA, United States
YC W24Early stage
What they do:
Generate ads. Iterate till perfect.
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HQ: San Francisco, CA, United States
YC W24Early stage
What they do:
Datasets and evals to push the frontier of visual intelligence.
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HQ: San Francisco, CA, United States
YC W24Early stage
What they do:
An AI agent for scientific research
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HQ: San Francisco, CA, United States
YC S24Early stage
What they do:
Random labs is building long running autonomous coding agents.
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HQ: San Francisco, CA, United States
YC S24Early stage
What they do:
Transform Images And Videos Into Immersive 3D With AI
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HQ: San Francisco, CA, United States
YC S24Early stage
What they do:
Reimagining how Machines Learn
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HQ: San Francisco, CA, United States
YC W25Early stage
What they do:
Accelerating world models.
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HQ: San Francisco, CA, United States
YC X25Early stage
What they do:
General Purpose Robots
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HQ: San Francisco, CA, United States
YC F25Early stage
What they do:
Explore dozens of design directions with your agent
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HQ: San Francisco, CA, United States
YC F25Early stage
What they do:
AI Document Workflows for Enterprises
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HQ: San Francisco, CA, United States
YC W26Early stage