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

121–144 of 596

KnockOutEZ

wigolo

★ 5,265

The go-to web for your AI coding agent — local-first search, fetch, crawl & research over MCP. No API keys, no cloud, $0/query. Public beta.

TypeScript

neo4j-labs

llm-graph-builder

★ 5,252

Neo4j graph construction from unstructured data using LLMs

Jupyter Notebook

vitali87

code-graph-rag

★ 5,134

The ultimate RAG for your monorepo. Query, understand, and edit multi-language codebases with the power of AI and knowledge graphs.

Python

Marker-Inc-Korea

AutoRAG

★ 5,072

AutoRAG: Now your agent can find anything in your computer. It gets smarter if you are using it frequently.

TypeScript

Kiln-AI

Kiln

★ 5,069

Build, Evaluate, and Optimize AI Systems. Includes evals, RAG, agents, fine-tuning, synthetic data generation, dataset management, MCP, and more.

Python

SolaceLabs

solace-agent-mesh

★ 4,925

An event-driven framework designed to build and orchestrate multi-agent AI systems. It enables seamless integration of AI agents with real-world data sources and systems, facilitating complex, multi-step workflows.

Python

changyeyu

LLM-RL-Visualized

★ 4,883

🌟100+ 原创 LLM / RL 原理图📚，《大模型算法》作者巨献！💥（100+ LLM/RL Algorithm Maps ）

Python

feyninc

chonkie

★ 4,750

🦛 CHONK docs with Chonkie ✨ — The lightweight ingestion library for fast, efficient and robust RAG pipelines

Python

infiniflow

infinity

★ 4,708

The AI-native database built for LLM applications, providing incredibly fast hybrid search of dense vector, sparse vector, tensor (multi-vector), and full-text.

C++

53AI

53AIHub

★ 4,655

53AI Hub is an open-source AI portal and knowledge base for managing enterprise knowledge, AI agents, prompts, and AI tools, seamlessly integrating with Coze, Dify, FastGPT, RAGFlow. 一个AI知识库与Agent门户

didilili

ai-agents-from-zero

★ 4,647

🚀 2026 最系统的 AI Agent 速成指南｜智能体实战教程 · 完整学习路径 + 实战项目 + 面试题库 · 对标大模型应用开发工程师岗位 · 覆盖LangChain / LangGraph / Coze / Dify / MCP / skills / LLM / RAG / 提示词 · 企业级部署与微调 · 从0到企业级落地 + 从学习到上线项目 + 面试准备一体化

Python

VectifyAI

OpenKB

★ 4,520

OpenKB: Open LLM Knowledge Base

Python

FlowElement-xinliuyuansu

m_flow

★ 4,501

A bio-inspired cognitive memory engine — a new paradigm for Graph RAG.

Python

CaviraOSS

LongMemory

★ 4,499

Local persistent memory store for LLM applications including claude desktop, github copilot, codex, antigravity, etc.

TypeScript

CortexReach

memory-lancedb-pro

★ 4,459

Enhanced LanceDB memory plugin for OpenClaw — Hybrid Retrieval (Vector + BM25), Cross-Encoder Rerank, Multi-Scope Isolation, Management CLI

JavaScript

zgsm-ai

costrict

★ 4,427

Costrict - strict AI coder for enterprises, quality first, including AI Agent, AI CodeReview, AI Completion.

TypeScript

gptme

★ 4,415

Your agent in your terminal, equipped with local tools: writes code, uses the terminal, browses the web. Make your own persistent autonomous agent on top!

Python

decodingai-magazine

llm-twin-course

★ 4,386

🤖 𝗟𝗲𝗮𝗿𝗻 for 𝗳𝗿𝗲𝗲 how to 𝗯𝘂𝗶𝗹𝗱 an end-to-end 𝗽𝗿𝗼𝗱𝘂𝗰𝘁𝗶𝗼𝗻-𝗿𝗲𝗮𝗱𝘆 𝗟𝗟𝗠 & 𝗥𝗔𝗚 𝘀𝘆𝘀𝘁𝗲𝗺 using 𝗟𝗟𝗠𝗢𝗽𝘀 best practices: ~ 𝘴𝘰𝘶𝘳𝘤𝘦 𝘤𝘰𝘥𝘦 + 12 𝘩𝘢𝘯𝘥𝘴-𝘰𝘯 𝘭𝘦𝘴𝘴𝘰𝘯𝘴

Python

oracle-devrel

oracle-ai-developer-hub

★ 4,376

Technical resources for AI developers to build applications, agents, and systems using Oracle AI Database and OCI services

Jupyter Notebook

crmne

ruby_llm

★ 4,369

One delightful Ruby framework for every major AI provider. Build AI agents, chatbots, RAG apps, and multimodal workflows in beautiful, expressive code.

Ruby

SenteLabsAI

OpenExecutive

★ 4,320

AI-powered virtual executive team — a single coherent executive persona backed by 8 specialist agents (FastAPI + Next.js).

Python

Anakin-Inc

anakin

★ 4,274

Open-source web scraping API. Turn any website into clean markdown or structured JSON. Anti-detect browser, proxy auto-selection, self-hosted. One command: make up

mongodb-developer

GenAI-Showcase

★ 4,264

MongoDB's Generative AI Showcase: an exhaustive collection of examples and sample applications covering Retrieval-Augmented Generation (RAG), AI agents, and industry-specific use cases.

Jupyter Notebook

SylphAI-Inc

AdalFlow

★ 4,215

AdalFlow: The library to build & auto-optimize LLM applications.

Python