Best Open Source rag Libraries
A curated list of the most popular GitHub repositories tagged with rag. Select any project to visualize its architecture and dive into the codebase using RepoMind's AI engine.
#1langgenius/dify
Production-ready platform for agentic workflow development.
#2langchain-ai/langchain
🦜🔗 The platform for reliable agents.
#3open-webui/open-webui
User-friendly AI Interface (Supports Ollama, OpenAI API, ...)
#4Shubhamsaboo/awesome-llm-apps
Collection of awesome LLM apps with AI Agents and RAG using OpenAI, Anthropic, Gemini and opensource models.
#5infiniflow/ragflow
RAGFlow is a leading open-source Retrieval-Augmented Generation (RAG) engine that fuses cutting-edge RAG with Agent capabilities to create a superior context layer for LLMs
#6PaddlePaddle/PaddleOCR
Turn any PDF or image document into structured data for your AI. A powerful, lightweight OCR toolkit that bridges the gap between images/PDFs and LLMs. Supports 100+ languages.
#7dair-ai/Prompt-Engineering-Guide
🐙 Guides, papers, lessons, notebooks and resources for prompt engineering, context engineering, RAG, and AI Agents.
#8pathwaycom/llm-app
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.
#9Mintplex-Labs/anything-llm
The all-in-one Desktop & Docker AI application with built-in RAG, AI agents, No-code agent builder, MCP compatibility, and more.
#10FlowiseAI/Flowise
Build AI Agents, Visually
#11mem0ai/mem0
Universal memory layer for AI Agents
#12run-llama/llama_index
LlamaIndex is the leading document agent and OCR platform
#13jeecgboot/JeecgBoot
【AI低代码平台】AI low-code platform empowers enterprises to quickly develop low-code solutions and build AI applications. 助力企业快速实现低代码开发和构建AI应用！ AI应用平台涵盖：AI应用、AI模型、AI聊天助手、知识库、AI流程编排、MCP和插件，聊天式业务操作等。 强大代码生成器：实现前后端一键生成，无需手写代码! 显著提升效率节省成本，又不失灵活~
#14milvus-io/milvus
Milvus is a high-performance, cloud-native vector database built for scalable vector ANN search
#15QuivrHQ/quivr
Opiniated RAG for integrating GenAI in your apps 🧠 Focus on your product rather than the RAG. Easy integration in existing products with customisation! Any LLM: GPT4, Groq, Llama. Any Vectorstore: PGVector, Faiss. Any Files. Anyway you want.
#16mindsdb/mindsdb
Federated Query Engine for AI - The only MCP Server you'll ever need
#17chatchat-space/Langchain-Chatchat
Langchain-Chatchat（原Langchain-ChatGLM）基于 Langchain 与 ChatGLM, Qwen 与 Llama 等语言模型的 RAG 与 Agent 应用 | Langchain-Chatchat (formerly langchain-ChatGLM), local knowledge based LLM (like ChatGLM, Qwen and Llama) RAG and Agent app with langchain
#18khoj-ai/khoj
Your AI second brain. Self-hostable. Get answers from the web or your docs. Build custom agents, schedule automations, do deep research. Turn any online or local LLM into your personal, autonomous AI (gpt, claude, gemini, llama, qwen, mistral). Get started - free.
#19microsoft/graphrag
A modular graph-based Retrieval-Augmented Generation (RAG) system
#20patchy631/ai-engineering-hub
In-depth tutorials on LLMs, RAGs and real-world AI agent applications.
#21thedotmack/claude-mem
A Claude Code plugin that automatically captures everything Claude does during your coding sessions, compresses it with AI (using Claude's agent-sdk), and injects relevant context back into future sessions.
#22ItzCrazyKns/Perplexica
Perplexica is an AI-powered answering engine.
#23HKUDS/LightRAG
[EMNLP2025] "LightRAG: Simple and Fast Retrieval-Augmented Generation"
#24labring/FastGPT
FastGPT is a knowledge-based platform built on the LLMs, offers a comprehensive suite of out-of-the-box capabilities such as data processing, RAG retrieval, and visual AI workflow orchestration, letting you easily develop and deploy complex question-answering systems without the need for extensive setup or configuration.
#25simstudioai/sim
Build, deploy, and orchestrate AI agents. Sim is the central intelligence layer for your AI workforce.
#26chroma-core/chroma
Open-source search and retrieval database for AI applications.
#27datawhalechina/happy-llm
📚 从零开始的大语言模型原理与实践教程
#28NirDiamant/RAG_Techniques
This repository showcases various advanced techniques for Retrieval-Augmented Generation (RAG) systems. RAG systems combine information retrieval with generative models to provide accurate and contextually rich responses.
#29Cinnamon/kotaemon
An open-source RAG-based tool for chatting with your documents.
#30langchain-ai/langgraph
Build resilient language agents as graphs.
#31deepset-ai/haystack
Open-source AI orchestration framework for building context-engineered, production-ready LLM applications. Design modular pipelines and agent workflows with explicit control over retrieval, routing, memory, and generation. Built for scalable agents, RAG, multimodal applications, semantic search, and conversational systems.
#32getzep/graphiti
Build Real-Time Knowledge Graphs for AI Agents
#33ScrapeGraphAI/Scrapegraph-ai
Python scraper based on AI
#34vanna-ai/vanna
🤖 Chat with your SQL database 📊. Accurate Text-to-SQL Generation via LLMs using Agentic Retrieval 🔄.
#35datawhalechina/hello-agents
📚 《从零开始构建智能体》——从零开始的智能体原理与实践教程
#361Panel-dev/MaxKB
🔥 MaxKB is an open-source platform for building enterprise-grade agents. 强大易用的开源企业级智能体平台。
#37coze-dev/coze-studio
An AI agent development platform with all-in-one visual tools, simplifying agent creation, debugging, and deployment like never before. Coze your way to AI Agent creation.
#38humanlayer/12-factor-agents
What are the principles we can use to build LLM-powered software that is actually good enough to put in the hands of production customers?
#39eosphoros-ai/DB-GPT
AI Native Data App Development framework with AWEL(Agentic Workflow Expression Language) and Agents
#40arc53/DocsGPT
Private AI platform for agents, assistants and enterprise search. Built-in Agent Builder, Deep research, Document analysis, Multi-model support, and API connectivity for agents.
#41elizaOS/eliza
Autonomous agents for everyone
#42onyx-dot-app/onyx
Open Source AI Platform - AI Chat with advanced features that works with every LLM
#43Canner/WrenAI
⚡️ GenBI (Generative BI) queries any database in natural language, generates accurate SQL (Text-to-SQL), charts (Text-to-Chart), and AI-powered business intelligence in seconds.
#44ConardLi/easy-dataset
A powerful tool for creating datasets for LLM fine-tuning 、RAG and Eval
#45memvid/memvid
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.
#46Tencent/WeKnora
LLM-powered framework for deep document understanding, semantic retrieval, and context-aware answers using RAG paradigm.
#47MODSetter/SurfSense
Connect any LLM to your internal knowledge sources and chat with it in real time alongside your team. OSS alternative to NotebookLM, Perplexity, and Glean. Join our Discord: https://discord.gg/ejRNvftDp9
#48topoteretes/cognee
Knowledge Engine for AI Agent Memory in 6 lines of code
#49ZhuLinsen/daily_stock_analysis
LLM驱动的 A/H/美股智能分析器，多数据源行情 + 实时新闻 + Gemini 决策仪表盘 + 多渠道推送，零成本，纯白嫖，定时运行
#50neuml/txtai
💡 All-in-one AI framework for semantic search, LLM orchestration and language model workflows