OpenSearch Engine

OpenSearch is an open-source search and analytics engine forked from Elasticsearch that provides full-text search, log analytics, vector search, and observability capabilities under the Apache 2.0 license without proprietary restrictions. It is fully compatible with existing Elasticsearch tooling and adds neural search, k-NN search, and AI-assisted query features that bridge traditional keyword search with modern vector similarity search. Organizations that require an open-source, license-unrestricted alternative to Elasticsearch use OpenSearch to power search applications, security analytics, and log management without vendor lock-in concerns.