Elasticsearch is an Open Source (Apache 2), Distributed, RESTful, Search Engine based on Lucene.
Elasticsearch is an Open Source (under the Apache 2 License), Distributed, RESTful, Search Engine based on lucene and developed in java.
It is often combined with logstash and kibana; referred to as elk-stack. With the recent addition of the Beats platform , the ELK stack has now been renamed to Elastic Stack.
It provides a distributed, scalable and multi-tenant capable full-text search engine with a RESTful web interface and schema-free json documents.
It is also document oriented and presents a various set of APIs: native Java, HTTP RESTful.
Elasticsearch comes with various text-preprocessing algorithms, allowing to use custom or predefined multi-lingual analyzers to improve search relevance.
Latest stable release: Elasticsearch 7.9.1 - September 3rd, 2020
Elastic is the parent company of Elasticsearch, the product.