Best Vector Databases GitHub Repositories

Stop renting your intelligence. Own it with AnythingLLM. Everything you need for a powerful local-first agent experience

A no-code RAG server that keeps answers in sync with your documents. Works with 8 vector databases. Built on Pathway.

LlamaIndex is the document processing platform for AI

Milvus is a high-performance, cloud-native vector database built for scalable vector ANN search

Self-evolving Context Database for AI Agents. Unify Agent Memory, Knowledge RAG and Skills.

📑 PageIndex: Document Index for Vectorless, Reasoning-based RAG

An open-source engine that turns continuous content streams into search and monitoring. Durable ingestion, hybrid search, alerts, and plugins for formats, models and business rules.

Qdrant - High-performance, massive-scale Vector Database and Vector Search Engine for the next generation of AI. Also available in the cloud https://cloud.qdrant.io/

Cognee is the open-source AI memory platform for agents. Give your AI agents persistent long-term memory with small models for free

A high-performance observability data pipeline.

Apache Doris is a real-time analytics and hybrid search database for AI agents.

A lightweight, lightning-fast, in-process vector database

[MLsys2026 Best Paper]: https://arxiv.org/abs/2506.08276. RAG on Everything with LEANN. Enjoy 97% storage savings while running a fast, accurate, and 100% private RAG application on your personal device.

LangChain4j is an idiomatic, open-source Java library for building LLM-powered applications on the JVM. It offers a unified API over popular LLM providers and vector stores, and makes implementing tool calling (including MCP support), agents and RAG easy. It integrates seamlessly with enterprise Java frameworks like Quarkus and Spring Boot.

💡 All-in-one AI framework for semantic search, LLM orchestration and language model workflows

Developer-friendly OSS embedded retrieval library for multimodal AI. Search More; Manage Less.

OceanBase is the unified distributed database for the AI era — open-source, multi-model, one engine for your most demanding workloads.

One Postgres for your application data, full-text search, vector retrieval, and aggregations. Home of the pg_search extension.

Data Agent Ready Warehouse : One for Analytics, Search, AI, Python Sandbox. — rebuilt from scratch. Unified architecture on your S3.

MariaDB server is a community developed fork of MySQL server. Started by core members of the original MySQL team, MariaDB actively works with outside developers to deliver the most featureful, stable, and sanely licensed open SQL server in the industry.