Elasticsearch is an open source, distributed, RESTful Search Engine.
Elasticsearch is an open source, distributed, RESTful, Search Engine based on lucene and developed in java. It is often combined with logstash and kibana; referred to as elk-stack. Official clients are available e.g. in java, javascript, c#, php, python, groovy, ruby, go.
With the recent addition of the Beats platform , the ELK stack has now been renamed to Elastic Stack.
Latest stable release: Elasticsearch 7.3.1 - August 22nd, 2019
Elastic is the parent company of Elasticsearch, the product.