The Business Community for Commercial Open Source Founders & Investors

COSSA—The Commercial Open Source Startup Alliance—is the founder-friendly institution built specifically for ambitious commercial open source startups. We are a community of operators, investors and entrepreneurs providing the best practice playbooks, governance models, and capital connections that create durable companies, de-risk the startup journey, and build healthy open source communities.

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State of Commercial Open Source 2025

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COSSA

Our passion lies in empowering the most ambitious founders to build enduring companies and communities.

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