RAG GitHub Repositories (2026) · Open Source Tools

Build Real-Time Knowledge Graphs for AI Agents

Milvus is a high-performance, cloud-native vector database built for scalable vector ANN search

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

Open source agentic operating system

World's first open-source enterprise world model.

The Memory Layer for AI Agents - Drop-in memory infrastructure for AI agents and apps. Context that persists. Built for production.

A multi-agent research system for the humanities and social sciences.

Capture first. Organize later. A local-first Markdown app that turns scattered records into clear notes with AI.

ReMe: Memory Management Kit for Agents - Remember Me, Refine Me.

The fast, precise document-intelligence engine for every language: text, tables and metadata from 100+ formats, with OCR, transcription and code intelligence.

PDF Parser for AI-ready data. Automate PDF accessibility. Open-source.

Not another ChatGPT wrapper. This is a local-first tool that turns your notes, web pages, PDFs and audio/video into a personal knowledge graph — running entirely on your own machine.

Self-hosted web search for AI agents and SEO. Google, Bing, Yandex, Baidu, DuckDuckGo & Ecosia, rendered in a real browser: ranked results and clean page Markdown. API, CLI, MCP 🎉

The Governance Platform for Agents, Knowledge, and Context

Text-to-SQL access control: schema selection that gives the LLM only the tables the caller is allowed to read. Row-level-security-aware table pruning for LangChain, MCP and any SQL agent. Postgres, Oracle, MySQL, SQL Server. 75% fewer prompt tokens.

Local-first AI agent memory with a knowledge graph, ontology constraints, and traceable reasoning—all in one SQLite file.

Enterprise-grade AI agent framework with multi-provider LLM management, secure knowledge bases and high-precision RAG, visual workflow orchestration, and multi-agent coordination.

Curated list of the best truly open-source AI projects, models, tools, and infrastructure. Daily updated.

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

An open-source, local-first writing workspace where you can write with Claude Code and Codex, drawing on your own sources and past work.