What they do:
The AI coding agent for C and C++
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HQ: San Francisco, CA, United States
Top Engineering, Product and Design Startups
This list has 629 startups and was last updated on Oct 15, 2026. 142 of them are hiring right now. Biggest hubs: San Francisco (360), New York (59), and London (22). Largest teams: GitLab, Optimizely, and Flock Safety. Latest round: Clueso raised $10M (Oct 13, 2026).
629 startupsPage 12 of 18
What they do:
The infrastructure to run coding agents for your team
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HQ: San Francisco, CA, United States
What they do:
Continuously improving evals for agentic commerce
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What they do:
API simulators for testing and training agents locally
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HQ: San Francisco, CA, United States
What they do:
Cloud development environments for AI coding
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HQ: San Francisco, CA, United States
What they do:
Tumult is building the next generation of apps for web design. Our…
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HQ: San Francisco, CA, United States
What they do:
Universal, Pure-GPU HTML Renderer
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HQ: San Francisco, CA, United States
What they do:
Build UI fast.
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HQ: San Francisco, CA, United States
What they do:
Robust & recursively self-improving general intelligence
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HQ: New York, NY, United States
What they do:
Incredibly reliable background task queues and cron jobs
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HQ: Austin, TX, United States
What they do:
Faster processors for solving NP-complete problems
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HQ: San Diego, CA, United States
What they do:
Transform Document Workflows with AI Agents
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HQ: San Francisco, CA, United States
What they do:
Embed charts, dashboards and exports in your app
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HQ: Austin, TX, United States
What they do:
Turn product features into launch videos
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HQ: San Francisco, CA, United States
What they do:
Gives non-technical team members agents that work right out of the box
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HQ: New York, NY, United States
What they do:
100x faster scientific evidence synthesis
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HQ: San Francisco, CA, United States
What they do:
Agents that improve
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HQ: New York, NY, United States
What they do:
The tiny computer built for voice AI.
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HQ: San Francisco, CA, United States
What they do:
AI-native, hardware procurement marketplace
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HQ: San Francisco, CA, United States
What they do:
Evals for frontier research agents
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HQ: San Francisco, CA, United States
What they do:
The browser for agentic development
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HQ: San Francisco, CA, United States
What they do:
The operating system for tech startups.
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HQ: San Francisco, CA, United States
What they do:
AI-native sales agents that run marketplaces
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HQ: San Francisco, CA, United States
What they do:
On-device Knowledge Graph engine for Enterprise Software
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HQ: San Francisco, CA, United States
What they do:
Managed Agents API
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HQ: San Francisco, CA, United States
What they do:
building the open agent runtime
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HQ: Ankara, Turkey
What they do:
Open-model inference provider for Europe, private by default.
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What they do:
Generate ads. Iterate till perfect.
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HQ: San Francisco, CA, United States
YC W24Early 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:
Explore dozens of design directions with your agent
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HQ: San Francisco, CA, United States
YC F25Early stage
What they do:
Resin helps engineers design electronics faster and more reliably
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HQ: San Francisco, CA, United States
YC F26Early stage
Optimizely
Acquired
What they do:
The first all-in-one operating system for marketing
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HQ: San Francisco, CA, United States
GitPrime
Acquired
What they do:
Visibility and analytics for software development leaders.
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HQ: Durango, CO, United States
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HQ: New York, NY, United States
Cognito
Acquired
What they do:
Frictionless, modern identity verification that starts with just a…
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HQ: San Francisco, CA, United States
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HQ: Cincinnati, OH, United States