Elasticsearch vs OpenSearch
A side-by-side comparison of two self-hosted apps from related categories — licensing, setup difficulty, resource needs, and what each one replaces.
Not the right match-up?
Elasticsearch
Distributed search and analytics engine
VS
OpenSearch
Search and observability suite with logs and dashboards
| Feature | Elasticsearch | OpenSearch |
|---|---|---|
| Category | Search Engines | Monitoring & Status |
| License | Elastic-2.0 | Apache-2.0 |
| Language | Java | Java |
| Setup difficulty | Hard | Hard |
| Min. RAM | 2,048 MB | 2,048 MB |
| Deployment | docker, kubernetes, bare-metal | docker, kubernetes, helm |
| GitHub stars | ★ 77,808 | ★ 13,480 |
| First released | 2010 | 2021 |
| Replaces | Algolia, Splunk | Elasticsearch, Splunk |
Why pick each one
Frequently asked questions
Is Elasticsearch or OpenSearch better?
Neither is universally better. Elasticsearch has the larger community; both share a hard setup difficulty, so the decision comes down to features and licensing.
Are Elasticsearch and OpenSearch free and open-source?
Yes. Elasticsearch is licensed under Elastic-2.0 and OpenSearch under Apache-2.0. Both can be self-hosted at no software cost.
Can I run Elasticsearch and OpenSearch with Docker?
Elasticsearch: yes. OpenSearch: yes.