Top Vector databases repositories on GitHub

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

• rag
• localai
• vector-database
• llm
• ai-agents
• multimodal

A lightning-fast search engine API bringing AI-powered hybrid search to your sites and applications.

• search-engine
• typo-tolerance
• site-search
• database
• enterprise-search
• search

Ready-to-run cloud templates for RAG, AI pipelines, and enterprise search with live data. 🐳Docker-friendly.⚡Always in sync with Sharepoint, Google Drive, S3, Kafka, PostgreSQL, real-time data APIs, and more.

• chatbot
• hugging-face
• llm
• llm-local
• llm-prompting
• llm-security

LlamaIndex is the document processing platform for AI

• agents
• application
• data
• fine-tuning
• framework
• llamaindex

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

• anns
• nearest-neighbor-search
• faiss
• vector-search
• image-search
• hnsw

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

• agentic-ai
• agents
• ai
• ai-agents
• context-engineering
• llm

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/

• neural-network
• search-engine
• knn-algorithm
• hnsw
• vector-search
• nearest-neighbor-search

Cognee is the open-source AI memory platform for agents. Give your AI agents persistent long-term memory across sessions with a self-hosted knowledge graph engine.

• ai
• cognitive-architecture
• vector-database
• ai-agents
• graph-database
• ai-memory

This repository showcases various advanced techniques for Retrieval-Augmented Generation (RAG) systems. Each technique has a detailed notebook tutorial.

• rag
• tutorials
• langchain
• llama-index
• llms
• python

Weaviate is an open-source vector database that stores both objects and vectors, allowing for the combination of vector search with structured filtering with the fault tolerance and scalability of a cloud-native database​.

• search-engine
• semantic-search
• semantic-search-engine
• vector-search
• vector-search-engine
• vector-database

Memory layer for AI Agents. Replace complex RAG pipelines with a serverless, single-file memory layer. Give your agents instant retrieval and long-term memory.

• ai
• context
• embedded
• faiss
• knowledge-base
• knowledge-graph

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

• rag
• agent-skills
• embedded
• faiss
• hnsw
• llm-memory

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.

• huggingface
• java
• langchain
• openai
• chatgpt
• gpt

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

• python
• search
• nlp
• semantic-search
• vector-search
• txtai

[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.

• ai
• faiss
• langchain
• llama-index
• llm
• localstorage

Code search MCP for Claude Code. Make entire codebase the context for any coding agent.

• agent
• agentic-rag
• ai-coding
• code-search
• cursor
• embedding

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

• approximate-nearest-neighbor-search
• image-search
• nearest-neighbor-search
• recommender-system
• search-engine
• semantic-search

🌌 A complete search engine and RAG pipeline in your browser, server or edge network with support for full-text, vector, and hybrid search in less than 2kb.

• data-structures
• full-text
• search
• typo-tolerance
• algiorithm
• search-engine

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

• oceanbase
• paxos
• htap
• cloud-native
• mysql-compatibility
• oltp