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Founded in 2012 in Amsterdam by the people behind Elasticsearch and Apache Lucene, Elastic set forth a vision that search can solve a plethora of data problems. Elasticsearch 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 released as open source under the terms of the Apache License.
Elasticsearch is the most popular enterprise search engine followed by Apache Solr, also based on Lucene.