Elasticsearch

Elasticsearch is a search engine based on the Lucene library. It provides a distributed, multitenant-capable full-text search engine with an HTTP web interface and schema-free JSON documents. Elasticsearch is developed in Java and is dual-licensed under the source-available Server Side Public License and the Elastic license, while other parts fall under the proprietary (source-available) Elastic License. Official clients are available in Java, .NET (C#), PHP, Python, Ruby and many other languages. According to the DB-Engines ranking, Elasticsearch is the most popular enterprise search engine.

This article is about the search engine platform. For the company, see Elastic NV.
This article is about the proprietary software based on Lucene. For the open source project released in 2021, see OpenSearch (software).

Elasticsearch
Original author(s)Shay Banon
Developer(s)Elastic NV
Initial release8 February 2010 (2010-02-08)
Stable release
8.x8.11.3 / 7 December 2023 (2023-12-07)
7.x7.17.16 / 6 December 2023 (2023-12-06)
Repositorygithub.com/elastic/elasticsearch
Written inJava
Operating systemCross-platform
TypeSearch and index
LicenseDual-licensed Elastic License (proprietary; source-available) and Server Side Public License (proprietary; source-available)
Websitewww.elastic.co/elasticsearch/ 
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