Knowledge Base & RAG
Enterprise search and RAG platforms — alternatives to Glean and Notion AI.
156 projects
See methodology for ranking rules; order uses public GitHub metrics within this scenario.
| Rank | Project | Stars | Forks | Updated | License |
|---|---|---|---|---|---|
| 1 |
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 |
89.6K | 10.6K | 08/29/26 | Apache-2.0 |
| 2 |
Understand-Anything
Graphs that teach > graphs that impress. Turn any code into an interactive knowledge graph you can explore, search, and ask questions about. Works with Claude Code, Codex, Cursor, Copilot, Gemini CLI, and more. |
81.0K | 6.8K | 08/26/26 | MIT |
| 3 |
crawl4ai
🚀🤖 Crawl4AI: Open-source LLM Friendly Web Crawler & Scraper. Don't be shy, join here: https://discord.gg/jP8KfhDhyN |
79.9K | 8.3K | 08/29/26 | Apache-2.0 |
| 4 |
docling
Get your documents ready for gen AI |
65.7K | 4.7K | 08/28/26 | MIT |
| 5 |
anything-llm
Stop renting your intelligence. Own it with AnythingLLM. Everything you need for a powerful local-first agent experience |
65.4K | 7.2K | 08/29/26 | MIT |
| 6 |
meilisearch
A lightning-fast search engine API bringing AI-powered hybrid search to your sites and applications. |
59.1K | 2.7K | 08/27/26 | Other |
| 7 |
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. |
59.0K | 1.5K | 07/05/26 | MIT |
| 8 |
wechat-miniapp-radar
AI-driven radar for WeChat mini programs: technology selection, trend tracking, and migration diagnostics. |
51.2K | 9.0K | 08/07/26 | GPL-3.0 |
| 9 |
siyuan
An open-source, privacy-first, self-hosted knowledge workspace where humans and AI agents work together 开源、隐私优先、自托管的知识工作空间，让人与智能体在此协作 |
46.0K | 3.0K | 08/29/26 | AGPL-3.0 |
| 10 |
LightRAG
[EMNLP2025] LightRAG: Simple and Fast Retrieval-Augmented Generation |
39.3K | 5.5K | 08/29/26 | MIT |
| 11 |
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 |
38.6K | 6.3K | 11/10/25 | Apache-2.0 |
| 12 |
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. |
39.4K | 3.7K | 07/09/25 | Other |
| 13 |
graphrag
A modular graph-based Retrieval-Augmented Generation (RAG) system |
35.7K | 3.8K | 08/24/26 | MIT |
| 14 |
PageIndex
📑 PageIndex: Document Index for Vectorless, Reasoning-based RAG |
35.4K | 3.1K | 08/28/26 | MIT |
| 15 |
onyx
Open Source AI Platform - AI Chat with advanced features that works with every LLM |
31.8K | 4.4K | 08/29/26 | Other |
| 16 |
FastGPT
FastGPT is a knowledge-based AI platform with out-of-the-box data processing, RAG retrieval, and visual workflow orchestration for building complex QA systems. |
29.5K | 7.3K | 08/29/26 | Other |
| 17 |
gbrain
Garry's Opinionated OpenClaw/Hermes Agent Brain |
29.3K | 4.3K | 08/29/26 | MIT |
| 18 |
graphiti
Build Real-Time Knowledge Graphs for AI Agents |
30.4K | 3.1K | 08/29/26 | Apache-2.0 |
| 19 |
supermemory
Memory and context engine + app that is extremely fast, scalable, and can be run fully locally. The Memory API for the AI era. |
29.1K | 2.5K | 08/29/26 | MIT |
| 20 |
RAG_Techniques
This repository showcases various advanced techniques for Retrieval-Augmented Generation (RAG) systems. Each technique has a detailed notebook tutorial. |
29.3K | 3.6K | 08/29/26 | Other |