Open core
"Open core" in a Sentence (2 examples)
We deliver a fully functional product with our community edition. You can download it under a GPL v3 license. But, additionally, we provide enterprise features only if you pay for them. It's open core.
In part because the upsell features are often not clearly partitioned off from the core project, many open core products require their contributors to sign a contributor license agreement (CLA), which assigns rights to the commercial owner of the product.