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Best RAG Tools

RAG (retrieval-augmented generation) connects your documents and data to LLMs. Browse frameworks and platforms below, then compare top picks for stack fit.

Open compare table Related: Best LLM Chat Tools · Best Coding Agent Tools · Best Open Source AI Tools · Best AI Automation Tools

Top tools

480 tools · sorted by quality

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echoes-vault-opencode

Persistent memory plugin for OpenCode. Obsidian-style knowledge base that survives across sessions

Score 91 GitHub stars 157 Open source
rag-interview-system

A complete collection of RAG interview questions, answers (1297 questions & 52 RAG types), system design scenarios, architecture patterns, a...

Score 91 GitHub stars 156 Open source
mnemo-cortex

Open-source cognitive coprocessor with active memory for AI agents — persistent recall, semantic search, overnight dreaming, verified facts,...

Score 91 GitHub stars 155 Open source
arbor

Graph-native code intelligence that replaces embedding-based RAG with deterministic program understanding.

Score 91 GitHub stars 154 Open source
docmind-ai-llm

DocMind AI is a powerful, open-source Streamlit application leveraging LlamaIndex, LangGraph, and local Large Language Models (LLMs) via Oll...

Score 91 GitHub stars 153 Open source
self-hosted-ai-stack

Deploy a complete self-hosted AI stack with Docker Compose: Ollama, LiteLLM, AnythingLLM, Whisper, WhisperLive, Kokoro, Embeddings, Docling...

Score 91 GitHub stars 153 Open source
azure-openai-rag-workshop

Create your own ChatGPT with Retrieval-Augmented-Generation workshop

Score 91 GitHub stars 152 Open source
knowledge-base-content

Open-source knowledge base covering topics about developer experience.

Score 91 GitHub stars 152 Open source
holdem

Holdem is a lightweight, open-source tool for effortlessly dragging and organizing files on your desktop. Inspired by Dropover and built wit...

Score 91 GitHub stars 152 Open source
pragma

Build portable agent teams across models and harnesses, with shared memory, skills, tools, and workflows — then bring them into Codex, Claud...

Score 91 GitHub stars 145 Open source
spring-ai-playground

Safe local execution layer for AI agent tools. Build and test-run MCP tools (no pass, no run), serve them from a built-in MCP server, and us...

Score 91 GitHub stars 140 Open source
pdf-mcp

MCP server that lets Claude Code and other AI agents read and search large PDFs, one file or a whole folder: agentic RAG with hybrid semanti...

Score 91 GitHub stars 139 Open source
neurolink

The pipe layer of an AI nervous system — one interface connecting provider neurons to your application, across three inference types: genera...

Score 91 GitHub stars 139 Open source
vellium

Local-first desktop AI workbench for roleplay, multi-character chat, long-form writing, RAG, MCP tools, plugins, and local models.

Score 91 GitHub stars 134 Open source
yu-ai-learn

2026 年编程导航 AI 编程实战新项目,基于 Taro + React + FastAPI + DeepSeek 的 AI 闯关学习小程序,支持一句话 / 文本主题 AI 出题、闯关答题与即...

Score 91 GitHub stars 132 Open source
MaxKB4j

MaxKB4j is an open-source LLMOps platform for LLM workflow applications and RAG developed based on the Java language. The project mainly dra...

Score 91 GitHub stars 129 Open source
OmniKey-AI-Unified-Key-Manager

A self-hosted LLM proxy and failover gateway supporting OpenAI & Gemini compatible endpoints. Routes requests dynamically across 12+ LLM pla...

Score 91 GitHub stars 129 Open source
legend-of-elya-n64

Legend of Elya — N64 game with a real 6.36M-parameter ternary transformer on the VR4300 MIPS III CPU. Zelda-style dungeon, AI NPCs, byte-lev...

Score 91 GitHub stars 129 Open source
ESEILANE

High-performance Knowledge Graph engine for AI, LLMs, and GraphRAG — built for the next generation of intelligent applications.

Score 91 GitHub stars 128 Open source
brick-SR1

brick is a smart AI Models router, based on complexity & capabilities extraction from the query to the models via proprietary spatial embedd...

Score 91 GitHub stars 127 Open source
hands-on-llm

动手学大模型全栈:CS336 中文精讲 · PyTorch 手搓 Transformer · 单卡复现 Pretrain/SFT/LoRA/DPO/GRPO/RLVR · PEFT/Agent/RAG 落地(含真实实验、曲...

Score 90 GitHub stars 125 Open source
langchain-coder

Web Application that can generate code and fix bugs and run using various LLM's (GPT,Gemini,PALM)

Score 90 GitHub stars 125 Open source
langchain-mongodb

Integrations between MongoDB, Atlas, LangChain, and LangGraph

Score 90 GitHub stars 124 Open source
ObsidianRAG

Ask questions about your Obsidian notes using local AI. Privacy-first RAG with Ollama, LM Studio, or any OpenAI-compatible server. Obsidian...

Score 90 GitHub stars 121 Open source
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