What they do:
Making everyone a software engineer
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HQ: San Francisco, CA, United States
Top Developer Tools Startups in San Francisco
This list has 441 startups and was last updated on Oct 15, 2026. 129 of them are hiring right now. Largest teams: GitLab, PagerDuty, and Algolia. Latest round: Supabase raised $150M (Oct 2, 2026).
441 startupsPage 8 of 13
What they do:
Datadog for robots
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HQ: San Francisco, CA, United States
What they do:
API & SDK for RCS (the next-generation of texting)
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HQ: San Francisco, CA, United States
What they do:
The open source Cursor alternative
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HQ: San Francisco, CA, United States
What they do:
The best DOCX MCP for agents to edit microsoft word documents
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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:
AI documentation engineer – test & autoimprove stale product docs
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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 fastest native app for agentic engineering.
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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:
The data gateway for agents.
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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:
AI agents for web testing
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HQ: San Francisco, CA, United States
What they do:
AI for quantitative trading
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HQ: San Francisco, CA, United States
What they do:
Self learning computer use agent for developers
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HQ: San Francisco, CA, United States
What they do:
Run open models as fast as your hardware allows
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HQ: San Francisco, CA, United States
What they do:
Turns products into CLIs and agents into customers
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HQ: San Francisco, CA, United States
What they do:
Find what's losing you customers and money in your AI agent and fix it
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HQ: San Francisco, CA, United States
What they do:
The Routing Layer for AI Agents
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HQ: San Francisco, CA, United States
What they do:
AI Agents for Platform Engineering
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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:
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:
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:
AI SRE agent that triages, coordinates, and fixes production incidents
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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:
Effortlessly deploy cloud software factories.
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HQ: San Francisco, CA, United States
What they do:
A cloud devbox that feels local
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HQ: San Francisco, CA, United States
What they do:
Self-optimizing neocloud that cuts LLM costs by 100x
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HQ: San Francisco, CA, United States
What they do:
We find where AI agents fail, then train better models to run them.
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HQ: San Francisco, CA, United States
What they do:
AI tools for the chips your AI runs on
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HQ: San Francisco, CA, United States
What they do:
Give AI agents the right context at the right moment
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HQ: San Francisco, CA, United States
What they do:
Automate on-call at agent-scale.
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HQ: San Francisco, CA, United States
What they do:
The AI coding agent for C and C++
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HQ: San Francisco, CA, United States