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.[1][2] The term was coined by Andrew Lampitt in 2008

examples

1. acquia with drupal as open source
2. defog with their core model as open source
3. Kafka, Cassandra, Instructure's Canvas, Oracle's MySQL, Elastic, Eucalyptus, IntelliJ IDEA CE, GitLab CE, Neo4j CE, Seldon Core, Redis

Referenced in:

• open-source