OpenSearch
Copyright OpenSearch Contributors

This product includes software developed by
Elasticsearch (http://www.elastic.co).
Copyright 2009-2018 Elasticsearch

This product includes software developed by The Apache Software
Foundation (http://www.apache.org/).

This product includes software developed by
Joda.org (http://www.joda.org/).

This product includes software developed by
Kraken (https://github.com/thekrakken/java-grok).

This project is based on the Apache 2.0-licensed elasticsearch-sql project (https://github.com/NLPchina/elasticsearch-sql):

Copyright 2014 omershelef
Copyright 2015-2016 Eliran
Copyright 2015 jheimbouch
Copyright 2016 allwefantasy
Copyright 2016 Razma Tazz
Copyright 2017 leonlu