RAG

Open-source RAG frameworks

Retrieval-augmented generation (RAG) makes a language model answer from your own documents. The text is split into chunks, turned into vectors and stored in an index, and the most relevant chunks are added to the prompt when a question comes in. The projects here cover the whole pipeline or one part of it: document parsing, vector search, or a complete question-answering app.

How to choose

Answer quality in RAG depends mostly on retrieval, not on the model. Compare how each project handles difficult documents such as PDFs, tables and scans, whether it supports hybrid search that combines keywords with vectors and re-ranking, and whether it shows which sources an answer came from.

Most-starred projects

73–96 of 596

The-Pocket

PocketFlow

★ 11,171

Pocket Flow: 100-line LLM framework. Let Agents build Agents!

Python

datawhalechina

all-in-rag

★ 11,102

🔍大模型应用开发实战一：RAG 技术全栈指南，在线阅读地址：https://datawhalechina.github.io/all-in-rag/

Python

KalyanKS-NLP

llm-engineer-toolkit

★ 10,787

A curated list of 120+ LLM libraries category wise.

VoltAgent

voltagent

★ 10,624

AI Agent Engineering Platform built on an Open Source TypeScript AI Agent Framework

TypeScript

oramasearch

orama

★ 10,553

🌌 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.

TypeScript

google

adk-samples

★ 10,313

A collection of sample agents built with Agent Development Kit (ADK)

Python

RunanywhereAI

runanywhere-sdks

★ 10,283

Production ready toolkit to run AI locally

C++

StarTrail-org

PixelRAG

★ 9,969

https://arxiv.org/abs/2606.28344. The end of web parsing. The beginning of scalable pixel-native search. link: https://pixelrag.ai/

Python

adongwanai

AgentGuide

★ 9,631

MDX

apify

crawlee-python

★ 9,528

Crawlee—A web scraping and browser automation library for Python to build reliable crawlers. Extract data for AI, LLMs, RAG, or GPTs. Download HTML, PDF, JPG, PNG, and other files from websites. Works with Parsel, BeautifulSoup, Playwright, and raw HTTP. Both headful and headless mode. With proxy rotation.

Python

xberg-io

xberg

★ 9,308

Polyglot document intelligence with a Rust core: extract text, metadata, images, tables, and structured data from 106 formats across 140 file extensions, plus code intelligence for 371 languages. Fifteen bindings, with CLI, REST API, and MCP server.

Rust

activeloopai

deeplake

★ 9,235

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

C++

Future-House

paper-qa

★ 9,202

High accuracy RAG for answering questions from scientific documents with citations

Python

shaxiu

XianyuAutoAgent

★ 9,173

智能闲鱼客服机器人系统：专为闲鱼平台打造的AI值守解决方案，实现闲鱼平台7×24小时自动化值守，支持多专家协同决策、智能议价和上下文感知对话。

Python

LearningCircuit

local-deep-research

★ 9,094

~95% on SimpleQA (e.g. Qwen3.6-27B on a 3090). Supports all local and cloud LLMs (llama.cpp, Ollama, Google, ...). 10+ search engines - arXiv, PubMed, your private documents. Everything Local & Encrypted.

Python

MervinPraison

PraisonAI

★ 9,057

PraisonAI 🦞 — Hire a 24/7 AI Workforce. Stop writing boilerplate and start shipping autonomous self-improving agents that research, plan, code, and execute tasks. Deployed in 5 lines of code with built-in memory, RAG, and support for 100+ LLMs.

Python

liyupi

codefather

★ 8,552

程序员鱼皮的编程宝典 ⭐️ 2026年最全编程学习路线图！包含Java学习路线、前端学习路线、Python学习路线、C++学习路线、算法学习路线、计算机基础学习路线、AI应用开发学习路线、AI Agent开发学习路线等。提供编程入门教程、AI大模型应用开发教程、RAG开发实战、MCP开发教程、Prompt工程指南、LLM应用开发、技术知识分享、学习资源推荐、项目实战教程、热门面试题、求职经验、简历优化、编程自学指南等内容，适用于所有零基础学编程、学习AI开发、转行程序员、计算机专业学生、求职找工作的同学 💎 编程学习，就来编程导航！

TypeScript

deeplethe

utopia

★ 8,370

World's first open-source enterprise world model.

Rust

Upsonic

★ 7,955

Build autonomous AI agents in Python.

Python

evidentlyai

evidently

★ 7,917

Evidently is an open-source ML and LLM observability framework. Evaluate, test, and monitor any AI-powered system or data pipeline. From tabular data to Gen AI. 100+ metrics.

Jupyter Notebook

NirDiamant

Prompt_Engineering

★ 7,852

22 prompt engineering techniques with hands-on Jupyter Notebook tutorials, from fundamental concepts to advanced strategies for leveraging LLMs.

Jupyter Notebook

Azure-Samples

azure-search-openai-demo

★ 7,760

A sample app for the Retrieval-Augmented Generation pattern running in Azure, using Azure AI Search for retrieval and Azure OpenAI large language models to power ChatGPT-style and Q&A experiences.

Python

luhengshiwo

LLMForEverybody

★ 7,329

每个人都能看懂的大模型知识分享，LLMs春/秋招大模型面试前必看，让你和面试官侃侃而谈

Jupyter Notebook

DataTalksClub

llm-zoomcamp

★ 7,284

LLM Zoomcamp - a free online course about real-life applications of LLMs. In 10 weeks you will learn how to build an AI system that answers questions about your knowledge base. Register here 👇🏼

Jupyter Notebook