Software Growth

Open core (business model)

Open core is a business model where a company gives away an open source core product and sells proprietary add-ons, usually team and enterprise features.

An open core company publishes the main product as open source and charges for extra features that stay proprietary. The free version spreads through developers and teams. The paid version makes money from the companies that need more control. GitLab and many database and developer-tool companies follow some version of this.

The OpenCore Ventures handbook calls it a hybrid software development and licensing model that includes open source and proprietary software, and lists three defining traits: it builds on open source, contains proprietary IP, and keeps all code source-available. The term was coined in 2008 to separate this model from dual licensing.

What goes in the paid layer

The usual rule is that individuals and small teams get the core free, and features that matter mainly to larger organizations are paid. In practice that means:

  • SSO, directory sync and audit logs.
  • Fine-grained permissions and role management.
  • Advanced security, compliance and governance tools.
  • High-availability, scaling and support packages.
  • Managed hosting, so customers do not run it themselves.

This lines up with what buyers want. EnterpriseReady's guide to enterprise features names access control sophistication as the most obvious differentiator between professional and enterprise tiers, so those features fit naturally behind a license.

Why companies choose it

The OpenCore handbook lists faster adoption, community-driven feedback and greater trust because users can inspect the code. For a company starting without a sales team, free distribution acts as the top of the funnel, close to product-led growth with source code attached.

Risks

  • Community friction. Move a feature from free to paid and contributors object loudly.
  • Cloud providers. A large cloud company can host your open source code and sell it. The handbook calls this a real risk and suggests application-level software and pricing based on buyers (who needs it) as mitigation.
  • Cannibalization. If the free version is too good, nobody pays. If it is too limited, nobody adopts it.
  • Support load. Free users file issues too.

Open core vs freemium and self-hosted

Freemium gives away a limited hosted product you control. Open core gives away code anyone can run and modify. Many open core products are self-hosted in their free form and sold as a hosted service in their paid form.

When a small SaaS should care

Most bootstrapped founders should not choose open core by default. It pays off when developers are your buyers, trust and inspectability matter, and you can survive a long stretch with little revenue while adoption grows. If you sell to non-technical teams, an open codebase mostly adds support and competitive risk without helping you sell. A middle path is to open source a library, SDK or integration while keeping the product closed, which builds goodwill without the licensing questions.

Related terms

Sources

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