ElasticSearch is a JSON-based search and analytics engine, often associated with Logstash, which collects data, and Kibana, which visualizes the results. There are separate tags for these.
Elasticsearch is an open source distributed, RESTful search and analytics engine that stores data, such as that collected by Logstash, in a manner that allows for fast searches on a single machine or a cluster. The RESTful API and JSON allows clients in many languages including Java, Python, .NET, SQL, and PHP.
See the elastic.co product page, and the logstash and kibana tags.
