Elasticsearch
Distributed full-text search and analytics engine with built-in vector and hybrid search
Elasticsearch is a distributed search and analytics engine built on Apache Lucene. It does full-text (BM25) keyword search, dense and sparse vector search, and hybrid search that combines lexical and vector ranking, exposed over a RESTful API.
Teams use it for log and event analytics, application search, and as the retrieval layer for RAG. It runs self-hosted or on-premises, or as managed Elastic Cloud (serverless and hosted on AWS, GCP, and Azure). Open source under a dual-license model.
Pricing: Usage-based
Elasticsearch Alternatives
Explore 25 products in the Vector databases category. View all Elasticsearch alternatives.
Azure AI Search
Microsoft managed search service with vector, hybrid, and agentic retrieval for RAG
Cloudflare Vectorize
Serverless vector database on Cloudflare's global network
Typesense
Open-source typo-tolerant search engine with built-in vector and hybrid search
Vespa
Open-source search and serving engine combining vector search, keyword search, and ML ranking at scale
OpenSearch
Open-source search and analytics suite with full-text, vector, and hybrid search
pgvecto.rs
pgvecto.rs is a Postgres extension that provides vector similarity search functions.
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