OpenSearch
Top pickThe Apache-2.0 Elasticsearch fork — when search is only half the job.
91
sovereigntyOpenSearch is the fork AWS created after Elastic changed Elasticsearch's licence in 2021, kept under Apache-2.0 and now governed by a foundation. It is far more than a search box: aggregations, analytics, log ingestion, dashboards and vector search in one platform, which is exactly right if search and observability are the same infrastructure problem for you and exactly wrong if you only wanted a fast product search. Around 13.4k stars. It is the heaviest option here and it earns that weight only when you need what it does.
OPEN SOURCEApache-2.0SELF-HOSTLOCAL-FIRST
LicenseApache-2.0
PricingFree and open source. Managed OpenSearch is available from AWS and others.
Open sourceYes
Self-hostableYes
Local-first dataYes
What it does well
- +Apache-2.0 under foundation governance — the licence question is settled
- +Handles search, analytics, logs and vectors in one platform
- +Enormous ecosystem inherited from Elasticsearch
- +Managed offerings exist if you would rather not operate a cluster
Where it falls short
- −Substantially heavier than the purpose-built search engines
- −JVM tuning and cluster operation are a real skill set
- −Relevance needs meaningful configuration to match Algolia
- −Overkill if all you need is a fast search box
OpenSearch as an alternative to
Where OpenSearch shows up in our comparisons, and how it ranked.
OpenSearch head-to-head
Straight comparisons against the tools people weigh it against.