Open-core model

The open-core model is a business model for the monetization of commercially produced open-source software. The open-core model primarily involves offering a "core" or feature-limited version of a software product as free and open-source software, while offering "commercial" versions or add-ons as proprietary software. The term was coined by Andrew Lampitt in 2008.

"Open core" and "COSS" redirect here. For the open-source hardware community, see OpenCores. For railway term, see Controller of site safety.
For broader coverage of this topic, see Business models for open-source software.

The concept of open-core software has proven to be controversial, as many developers do not consider the business model to be true open-source software. Despite this, open-core models are used by many open-source software companies.

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