# opensearch-project/OpenSearch

🔎 Open source distributed and RESTful search engine.

Repository: https://github.com/opensearch-project/OpenSearch
Canonical: https://ross.abutalabs.com/products/opensearch
Homepage: https://opensearch.org/docs/latest/opensearch/index/
Language: Java
License: Apache-2.0
License Family: permissive
Topics: search, search-engine, analytics, java, foss, apache2
Last push: 2026-08-26T20:24:36+00:00

## Health v2 (maintenance only)
Score: 98/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 96, longevity 100
- inputs: {"age_days": 2042, "days_push": 7, "days_rel": 28, "gap_med": 28.5, "n_releases_24m": 23}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 13581, forks 2920 (observed 2026-08-28T04:11:03.581039+00:00)

## What it is
OpenSearch is an open-source, distributed, RESTful search and analytics suite for full-text search, log analytics, application monitoring, and vector search. It is a community-driven Apache-2.0 fork of Elasticsearch 7.10 maintained under the Linux Foundation.

## Use cases
- add full-text search to my application or website
- store and query logs for observability
- use a vector database for semantic search
- monitor application metrics and traces
- run analytics dashboards over large datasets
- self-host an Elasticsearch-compatible search engine

## When to choose
- you need a scalable, self-hosted distributed search engine with an Apache-2.0 license
- you want combined full-text, analytics, and vector search in one system
- you need an open-source Elasticsearch-compatible alternative without Elastic's license changes
- you want log and application monitoring with a visualization UI (OpenSearch Dashboards)

## When to avoid
- you need a lightweight embedded search index for a small app
- you prefer a managed search service over operating a cluster
- your stack depends on features exclusive to newer Elasticsearch versions
- you only need simple keyword search that a database full-text index could handle

## Facets
- artifact type: service
- maturity: stable
- function: search-engine, vector-database, analytics, monitoring, http-server
- domain: analytics, databases, big-data, monitoring, developer-tools
- platform: windows, self-hosted, jvm
- tags: full-text-search, log-analytics, observability, distributed-systems, elasticsearch-fork, rest-api, java, search, linux, macos, docker

## Member repositories
- opensearch-project/OpenSearch (main) score 98

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:11:03.581039+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:13:11.600977+00:00, confidence not recorded.
  - readme: https://github.com/opensearch-project/OpenSearch (fetched 2026-08-28T04:11:03.581039+00:00, sha 677f2a6e9c78)
  - homepage: https://opensearch.org/docs/latest/opensearch/index/ (fetched 2026-08-29T08:07:54.872907+00:00, sha 4086eeeba61d)
  - site_page: https://docs.opensearch.org/latest/about (fetched 2026-08-29T08:07:54.875495+00:00, sha dbb72e415207)
- Data as of 2026-08-30T08:39:29.467469+00:00.