Amazon recently announced the release of OpenSearch, a fork derived from versions 7.10.2 of ElasticSearch and Kibana. OpenSearch is licensed under the Apache License, V2 (ALv2). Elastic recently made adjustments to their Elastic License to simplify the usage of their code for non-commercial purposes.
The product team behind this release calls the OpenSearch project a “a community-driven, open source fork of Elasticsearch and Kibana”. They continue to explain that: “Our goal with the OpenSearch project is to make it easy for as many people and organizations as possible to use OpenSearch in their business, their products, and their projects”