OpenSearch
SearchA distributed search and analytics engine, with dashboards, vector search and observability tools, developed under the Linux Foundation.
Open-source alternative to:
What the free edition leaves out
The free edition covers the features teams usually need; we found nothing important held back. “Not confirmed” means the official pages we read did not say, so we do not guess.
| Feature | Free edition | Details | Source |
|---|---|---|---|
| SSO / SAML | Free | The Security documentation lists SAML and OIDC as authentication backends. The FAQ says all software in the OpenSearch project is released under Apache 2.0. | Source ↗ |
| Role-based access control | Free | The Security documentation covers users, roles, permissions, and document-level and field-level security. The FAQ lists built-in security as part of the open source suite. | Source ↗ |
| Audit logs | Free | The Security documentation has an Audit logs section. | Source ↗ |
| Multi-user / teams | Free | The Security documentation covers defining users and roles and multi-tenancy in OpenSearch Dashboards. | Source ↗ |
| Backups and restore | Not confirmed | Not read on the pages used for this entry. | Source ↗ |
| API access | Free | The FAQ says OpenSearch keeps Elasticsearch's REST APIs, query syntax and responses. | Source ↗ |
| Support SLA | Not confirmed | The FAQ points to community channels: GitHub issues, the community forum and community meetings. No commercial support or SLA is described. | Source ↗ |
Best for
Teams that run their own search, log analytics or vector search cluster and want an Apache-licensed alternative to Elasticsearch.
Why choose it over Elasticsearch
The FAQ says all software in the OpenSearch project is released under Apache 2.0, and security features such as roles, SAML, OIDC, audit logs and multi-tenancy are documented as part of it. It keeps Elasticsearch's REST APIs and can read indices created by Elasticsearch 6.0 through 7.10, which eases moving over from older Elasticsearch versions. The project is governed by the OpenSearch Software Foundation under the Linux Foundation.
Where it falls short
It is a cluster system with many moving parts: shards, nodes, security configuration and upgrades. The docs describe many install routes and a separate section on cluster formation, so expect real operations work. The FAQ describes only community support, so commercial support has to come from third parties. It forked from Elasticsearch 7.10, so features added in later Elasticsearch versions may differ from what OpenSearch offers.
Open-source alternative to
- Elasticsearch — The OpenSearch FAQ says OpenSearch is a fork of open source Elasticsearch 7.10 and keeps its REST APIs and query syntax, so it can be used in place of Elasticsearch.
Category
SearchTopics
Tech stack
Java
Rust
DockerLanguages as reported by GitHub for the repository.
