Top Vector databases repositories on GitHub

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

The all-in-one AI productivity accelerator. On device and privacy first with no annoying setup or configuration.

• rag
• lmstudio
• localai
• vector-database
• ollama
• local-llm

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

LlamaIndex is the leading document agent and OCR platform

• 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

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

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

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

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

Memory control plane for AI Agents in 6 lines of code

• ai
• cognitive-architecture
• vector-database
• openai
• rag
• ai-agents

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

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

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

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

[MLsys2026]: 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

🌌 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

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

The Fastest Distributed Database for Transactional, Analytical, and AI Workloads.

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

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

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

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

• rust
• database
• serverless
• bigdata
• snowflake
• ai

Deeplake is AI Data Runtime for Agents. It provides serverless postgres with a multimodal datalake, enabling scalable retrieval and training.

• deep-learning
• pytorch
• ai
• mlops
• computer-vision
• datalake

Private & local AI personal knowledge management app for high entropy people.

• ai
• lancedb
• llama
• llamacpp
• local-first
• markdown

Open Source Deep Research Alternative to Reason and Search on Private Data. Written in Python.

• agent
• llm
• rag
• vector-database
• deepseek
• agentic-rag

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.

• amazon-web-services
• database
• fulltext-search
• json
• mariadb
• mysql

AI + Data, online. https://vespa.ai

• vespa
• search-engine
• big-data
• ai
• serving-recommendation
• machine-learning