Best Milvus / Zilliz Cloud Alternatives(2026)

Managed MongoDB cloud service with built-in vector search on AWS, Azure, and GCP.

Elasticsearch vector search with HNSW dense vector fields and k-NN search, available from v8.0+.

Managed vector database for AI applications with embedding storage, similarity search, and metadata filtering.

Rust-based open-source vector database with high-performance similarity search and rich filtering.

Managed vector database integrated into Databricks, storing embeddings alongside Delta Lake tables.

Open-source vector database with multi-modal search, structured filtering, and built-in vectorization.

Open-source embedding database for prototyping AI applications locally.

pgvector is an open-source PostgreSQL extension that adds vector similarity search to any PostgreSQL database.