What they do:
Automated WireGuard networks for distributed systems and Kubernetes
Quick facts:
HQ: Austin, TX, United States
Top Developer Tools Startups
This list has 794 startups and was last updated on Oct 15, 2026. 187 of them are hiring right now. Biggest hubs: San Francisco (441), New York (75), and London (39). Largest teams: GitLab, PagerDuty, and Algolia. Latest round: Coding Giants raised €6M (Oct 14, 2026).
Survival statistics →886 open roles →
794 startupsPage 9 of 23
What they do:
Webflow for the Backend
Quick facts:
HQ: New York, NY, United States
What they do:
PaaS-like experience with the power of Kubernetes, on your cloud
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What they do:
Platform where autonomous companies are built
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Ellipsis
Hiring
What they do:
Cloud platform for coding agents
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HQ: New York, NY, United States
What they do:
The orchestration platform for teams who ship.
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HQ: New York, NY, United States
Cerulion
Hiring
What they do:
Open source operating system for robots
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HQ: San Francisco, CA, United States
HumanLayer
Hiring
What they do:
The multiplayer control plane for your software factory
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HQ: San Francisco, CA, United States
nao Labs
Hiring
What they do:
Open Source Analytics Agent
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Humwork
Hiring
What they do:
Human experts as API for AI Agents
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HQ: San Francisco, CA, United States
Unsiloed AI
Hiring
What they do:
API for parsing multimodal unstructured data
Quick facts:
HQ: San Francisco, CA, United States
Lemma
Hiring
What they do:
Production Monitoring for AI agents
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HQ: San Francisco, CA, United States
Waddle Labs
Hiring
What they do:
LLMs that control robots
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HQ: San Francisco, CA, United States
Salus
Hiring
What they do:
Guardrails to validate your agent's actions before they execute
Quick facts:
HQ: San Francisco, CA, United States
Replicas
Hiring
What they do:
Run any coding agent harness in the cloud
Quick facts:
HQ: San Francisco, CA, United States
Reason Machines
Hiring
What they do:
Reason Machines builds Reason Agent, the autonomous software engineer…
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HQ: San Francisco, CA, United States
Workers IO
Hiring
What they do:
Simulation Environments for Verifying Mission Critical Software
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HQ: San Francisco, CA, United States
What they do:
Open-source framework for building serverless applications
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HQ: Zagreb, Croatia
What they do:
World's fastest and most optimal route optimization engine
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HQ: Ontario, CA, United States
What they do:
Customer support tool purpose-built for companies that sell APIs
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HQ: Truckee, CA, United States
Blink
Hiring
What they do:
Build fully functional apps with AI.
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HQ: San Francisco, CA, United States
What they do:
Agentic workflows for complex, long running business operations
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HQ: San Francisco, CA, United States
What they do:
No-Code LLM Application / Workflow Builder
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HQ: San Francisco, CA, United States
Star
Hiring
What they do:
Make games with AI - no coding required
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HQ: Springfield, MO, United States
What they do:
The intelligence and execution layer for agentic B2B card payments.
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HQ: New York, NY, United States
What they do:
Plaid for Commercial Real Estate
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HQ: Boston, MA, United States
What they do:
Autonomously scaling environments
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HQ: San Francisco, CA, United States
What they do:
Understand why your AI agent breaks. Iterate fast to fix it.
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HQ: London, United Kingdom
What they do:
The Agent Analytics Platform
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HQ: Los Angeles, CA, United States
Consus
Hiring
What they do:
The fastest and cheapest way to use AI with ITAR or CUI data.
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HQ: San Francisco, CA, United States
What they do:
connect, migrate and implement enterprise systems
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HQ: Germany
What they do:
The fastest & most scalable graph-vector database on the market
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HQ: London, United Kingdom
What they do:
Hardware-Aware AI for Embedded Software
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HQ: San Francisco, CA, United States
What they do:
Collaborative AI app builder for teams
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HQ: San Francisco, CA, United States
What they do:
The agent-native serverless cloud
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HQ: San Francisco, CA, United States
What they do:
We give AI agents realtime web context via API
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HQ: San Francisco, CA, United States