What they do:
Automated WireGuard networks for distributed systems and Kubernetes
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HQ: Austin, TX, United States
Top Open Source Startups
This list has 177 startups and was last updated on Oct 15, 2026. 42 of them are hiring right now. Biggest hubs: San Francisco (96), New York (15), and London (10). Largest teams: GitLab, InfluxData, and Docker. Latest round: Supabase raised $150M (Oct 2, 2026).
177 startupsPage 3 of 5
What they do:
The orchestration platform for teams who ship.
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HQ: New York, NY, United States
nao Labs
Hiring
What they do:
Open Source Analytics Agent
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What they do:
Open-source framework for building serverless applications
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HQ: Zagreb, Croatia
What they do:
Autonomously scaling environments
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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
QuestDB
Hiring
What they do:
Data platform for mission-critical real-time workloads
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HQ: London, United Kingdom
YC S20Early stage
What they do:
The complete production quality platform. AI-powered E2E testing,…
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HQ: Limerick, Ireland
What they do:
API for unlimited, durable, real-time streams
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HQ: San Francisco, CA, United States
What they do:
Simulate your customers with AI agents
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HQ: Boston, MA, United States
What they do:
Full-service web, mobile, & cloud studio providing professional…
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HQ: Austin, TX, United States
What they do:
Building the definitive all-in-one on-device AI productivity tool
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HQ: Los Angeles, CA, United States
What they do:
The authentication framework for TypeScript
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HQ: San Francisco, CA, United States
What they do:
The cheapest, fastest inference cloud
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HQ: San Francisco, CA, United States
What they do:
Cursor for data analysis
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HQ: New York, NY, United States
What they do:
Easiest way to set up Zero Trust Access for your team
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HQ: San Francisco, CA, United States
What they do:
Models that keep learning
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HQ: London, United Kingdom
What they do:
Optimize performance on GPUs - 10x faster
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HQ: New York, NY, United States
What they do:
Open-source AI coworker with memory
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What they do:
The AI notepad that knows and works for you
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HQ: Seoul, South Korea
What they do:
The makers of Klex Bots, your own team of digital coworkers.
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What they do:
Production infrastructure on autopilot
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HQ: San Francisco, CA, United States
What they do:
Evals for robots
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HQ: San Francisco, CA, United States
What they do:
Configuration language for building enterprise web apps 10x faster
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HQ: Zagreb, Croatia
What they do:
Open-source monitoring for machine learning models
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HQ: London, United Kingdom
What they do:
Open source background agents
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HQ: Singapore
What they do:
Cloud Native SIEM (alternative to Splunk/Elastic)
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HQ: Seattle, WA, United States
What they do:
AI for humans
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HQ: San Francisco, CA, United States
What they do:
The open source Postman alternative.
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HQ: San Francisco, CA, United States
What they do:
AI tooling
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What they do:
Security for AI-native developers
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HQ: San Francisco, CA, United States
What they do:
OpenRouter for Integrations
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HQ: New York, NY, 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:
Run open models as fast as your hardware allows
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HQ: San Francisco, CA, United States
What they do:
Make software self-healing
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