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ElementaryWinter 2022
Open-source data observability for data teams
Developer ToolsLOW 15%
Browse Startups
Search 6,733 startups from YC and beyond.
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EpicenterSummer 2025
Open-source, local-first apps that share a memory.
SaaSLOW 12%⚠ 1 person
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Evidently AISummer 2021
Open-source monitoring for machine learning models
Developer ToolsLOW 15%⚠ 2 persons
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FlowiseAISummer 2023
Open source GenAI development platform
Artificial IntelligenceLOW 9%
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FormanceSummer 2021
Open Source Infrastructure for the Financial Internet
Developer ToolsLOW 15%
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GraiSummer 2022
Open source version control for metadata
Developer ToolsLOW 15%⚠ 3 persons
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GrowthBookWinter 2022
Open source feature flagging and A/B testing
Developer ToolsLOW 15%
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Hegel AISummer 2023
Open source tools for developing generative AI applications
OtherMEDIUM 22%⚠ 2 persons
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highlight.ioWinter 2023
The open source, fullstack monitoring platform: stop guessing why…
Developer ToolsLOW 15%
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HyperDXSummer 2022
Open-source, dev-friendly observability.
Developer ToolsLOW 15%
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AirbyteWinter 2020
Open Data Movement Platform
Artificial IntelligenceLOW 9%
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Karate LabsWinter 2022
Open-source API & UI test automation
Developer ToolsLOW 15%⚠ 2 persons
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KeepWinter 2023
The open-source AIOps platform
SaaSLOW 12%
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KernelSummer 2025
Crazy fast, open source infra for AI agents to use the Internet
Developer ToolsLOW 15%
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Klavis AISpring 2025
Open source MCP integration platform for reliably tool use at scale.
Artificial IntelligenceLOW 9%
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LagoSummer 2021
Open Source Metering and Usage Based Billing
FintechLOW 13%
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LaminSummer 2022
Open data framework for biology
Developer ToolsLOW 15%
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LanceDBWinter 2022
Open-source, serverless vectordb for production-scale generative AI
DevOpsLOW 6%
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LangfuseWinter 2023
Open source LLM engineering platform
Artificial IntelligenceLOW 9%
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LaudspeakerWinter 2021
Open source mobile marketing platform. Alternative to appcues /…
SaaSLOW 12%⚠ 3 persons