Not be confused with the Opensearch API

OpenSearch (or Amazon OpenSearch) is an open-source search engine that offers full-text search and analytics. It is a fork of Elasticsearch created by Amazon Web Services in 2021 and now developed by the OpenSearch Software Foundation, a project of the Linux Foundation.

The CirrusSearch extension uses Elasticsearch up to version 1.43 as its backend. MediaWiki 1.44+ is compatible with OpenSearch 1.3.

See also

• Help:Searching - general information
• Elasticsearch
• Wikimedia Search Platform/Decision Records/Search backend replacement technology
• https://en.wikipedia.org/wiki/OpenSearch_(software)