Cover image showing logos of Qdrant, Weaviate, Milvus, and ChromaDB with the title 'Top Open-Source Vector Databases' on a blue background.

Top Open-Source Vector Databases (Qdrant, Weaviate, Milvus, ChromaDB) Compared

This guide compares the leading open-source vector databases — Qdrant, Weaviate, Milvus, and ChromaDB. Learn their strengths, use cases, and which one is best for powering AI, ML, semantic search, and RAG applications.

September 16, 2025 · 4 min · OctaByte