OpenSearch

Open-source search and analytics suite (Linux Foundation).

About OpenSearch

In OpenSearch’s own words: “OpenSearch is a community-driven, Apache 2.0-licensed open source search and analytics suite that makes it easy to ingest, search, visualize, and analyze data.”

OpenSearch is open source, is free to use and can be self-hosted.

People switching from Elasticsearch often consider OpenSearch.

OpenSearch is an alternative to

ElasticsearchSee all Elasticsearch alternatives

Similar to OpenSearch

AlgoliaHosted search and discovery API.
Apache SolrMature open-source enterprise search platform.
Manticore SearchOpen-source search database, a fork of Sphinx.
MeilisearchFast, typo-tolerant open-source search engine.
TypesenseOpen-source, typo-tolerant search engine.

Listed for information; LaunchStall isn’t affiliated with OpenSearch. The quoted description comes from opensearch.org. Features and plans change — check the official site for current details.