---
mapped_pages:
  - https://www.elastic.co/guide/en/elasticsearch/plugins/current/api.html
---

# API extension plugins [api]

API extension plugins add new functionality to Elasticsearch by adding new APIs or features, usually to do with search or mapping.


## Community contributed API extension plugins [_community_contributed_api_extension_plugins]

A number of plugins have been contributed by our community:

* [carrot2 Plugin](https://github.com/carrot2/elasticsearch-carrot2): Results clustering with [carrot2](https://github.com/carrot2/carrot2) (by Dawid Weiss)
* [Elasticsearch Trigram Accelerated Regular Expression Filter](https://github.com/wikimedia/search-extra): (by Wikimedia Foundation/Nik Everett)
* [Elasticsearch Experimental Highlighter](https://github.com/wikimedia/search-highlighter): (by Wikimedia Foundation/Nik Everett)
* [Entity Resolution Plugin](https://github.com/zentity-io/zentity) ([zentity](https://zentity.io)): Real-time entity resolution with pure Elasticsearch (by Dave Moore)