True, but for all intents and purposes, it's basically public domain with some attribution clauses and litigation indemnity: "Grant of Copyright License. Subje

True, but for all intents and purposes, it's basically public domain with some attribution clauses and litigation indemnity: "Grant of Copyright License. Subject to the terms and conditions of this License, each Contributor hereby grants to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare Derivative Works of, publicly display, publicly perform, sublicense, and distribute the Work and such Derivative Works in Source or Object form." https://github.com/apache/kafka/blob/trunk/LICENSE#L67-L72 https://github.com/apache/kafka/blob/trunk/LICENSE#L67-L72