Best Open Source mcp Libraries

A curated list of the most popular GitHub repositories tagged with mcp. Select any project to visualize its architecture and dive into the codebase using RepoMind's AI engine.

#1n8n-io/n8n

Fair-code workflow automation platform with native AI capabilities. Combine visual building with custom code, self-host or cloud, 400+ integrations.

175,654TypeScript

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#2langgenius/dify

Production-ready platform for agentic workflow development.

129,920TypeScript

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#3open-webui/open-webui

User-friendly AI Interface (Supports Ollama, OpenAI API, ...)

124,513Python

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#4punkpeye/awesome-mcp-servers

A collection of MCP servers.

81,280

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#5netdata/netdata

The fastest path to AI-powered full stack observability, even for lean teams.

77,825C

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#6infiniflow/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

73,497Python

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#7lobehub/lobehub

The ultimate space for work and life — to find, build, and collaborate with agent teammates that grow with you. We are taking agent harness to the next level — enabling multi-agent collaboration, effortless agent team design, and introducing agents as the unit of work interaction.

72,464TypeScript

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#8Mintplex-Labs/anything-llm

The all-in-one Desktop & Docker AI application with built-in RAG, AI agents, No-code agent builder, MCP compatibility, and more.

54,814JavaScript

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#9affaan-m/everything-claude-code

Complete Claude Code configuration collection - agents, skills, hooks, commands, rules, MCPs. Battle-tested configs from an Anthropic hackathon winner.

49,031JavaScript

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#10sansan0/TrendRadar

⭐AI-driven public opinion & trend monitor with multi-platform aggregation, RSS, and smart alerts.🎯 告别信息过载，你的 AI 舆情监控助手与热点筛选工具！聚合多平台热点 + RSS 订阅，支持关键词精准筛选。AI 翻译 + AI 分析简报直推手机，也支持接入 MCP 架构，赋能 AI 自然语言对话分析、情感洞察与趋势预测等。支持 Docker ，数据本地/云端自持。集成微信/飞书/钉钉/Telegram/邮件/ntfy/bark/slack 等渠道智能推送。

46,718Python

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#11upstash/context7

Context7 MCP Server -- Up-to-date code documentation for LLMs and AI code editors

46,415TypeScript

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#12jeecgboot/JeecgBoot

【AI低代码平台】AI low-code platform empowers enterprises to quickly develop low-code solutions and build AI applications. 助力企业快速实现低代码开发和构建AI应用！ AI应用平台涵盖：AI应用、AI模型、AI聊天助手、知识库、AI流程编排、MCP和插件，聊天式业务操作等。强大代码生成器：实现前后端一键生成，无需手写代码! 显著提升效率节省成本，又不失灵活~

45,255Java

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#13mudler/LocalAI

:robot: The free, Open Source alternative to OpenAI, Claude and others. Self-hosted and local-first. Drop-in replacement, running on consumer-grade hardware. No GPU required. Runs gguf, transformers, diffusers and many more. Features: Generate Text, MCP, Audio, Video, Images, Voice Cloning, Distributed, P2P and decentralized inference

42,939Go

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#14Kong/kong

🦍 The API and AI Gateway

42,805Lua

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#15zhayujie/chatgpt-on-wechat

CowAgent是基于大模型的超级AI助理，能主动思考和任务规划、访问操作系统和外部资源、创造和执行Skills、拥有长期记忆并不断成长。同时支持飞书、钉钉、企业微信应用、微信公众号、网页等接入，可选择OpenAI/Claude/Gemini/DeepSeek/ Qwen/GLM/Kimi/LinkAI，能处理文本、语音、图片和文件，可快速搭建个人AI助手和企业数字员工。

41,351Python

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#16mindsdb/mindsdb

Federated Query Engine for AI - The only MCP Server you'll ever need

38,551Python

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#17ComposioHQ/awesome-claude-skills

A curated list of awesome Claude Skills, resources, and tools for customizing Claude AI workflows

36,442Python

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#18danny-avila/LibreChat

Enhanced ChatGPT Clone: Features Agents, MCP, DeepSeek, Anthropic, AWS, OpenAI, Responses API, Azure, Groq, o1, GPT-5, Mistral, OpenRouter, Vertex AI, Gemini, Artifacts, AI model switching, message search, Code Interpreter, langchain, DALL-E-3, OpenAPI Actions, Functions, Secure Multi-User Auth, Presets, open-source for self-hosting. Active.

34,010TypeScript

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#19alibaba/nacos

an easy-to-use dynamic service discovery, configuration and service management platform for building AI cloud native applications.

32,646Java

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#20PDFMathTranslate/PDFMathTranslate

[EMNLP 2025 Demo] PDF scientific paper translation with preserved formats - 基于 AI 完整保留排版的 PDF 文档全文双语翻译，支持 Google/DeepL/Ollama/OpenAI 等服务，提供 CLI/GUI/MCP/Docker/Zotero

31,844Python

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#21block/goose

an open source, extensible AI agent that goes beyond code suggestions - install, execute, edit, and test with any LLM

30,854Rust

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#22patchy631/ai-engineering-hub

In-depth tutorials on LLMs, RAGs and real-world AI agent applications.

30,364Jupyter Notebook

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#23bytedance/UI-TARS-desktop

The Open-Source Multimodal AI Agent Stack: Connecting Cutting-Edge AI Models and Agent Infra

28,120TypeScript

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#24microsoft/playwright-mcp

Playwright MCP server

27,471TypeScript

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#25labring/FastGPT

FastGPT is a knowledge-based platform built on the LLMs, offers a comprehensive suite of out-of-the-box capabilities such as data processing, RAG retrieval, and visual AI workflow orchestration, letting you easily develop and deploy complex question-answering systems without the need for extensive setup or configuration.

27,140TypeScript

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#26github/github-mcp-server

GitHub's official MCP Server

27,120Go

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#27ComposioHQ/composio

Composio powers 1000+ toolkits, tool search, context management, authentication, and a sandboxed workbench to help you build AI agents that turn intent into action.

27,095TypeScript

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#28ChromeDevTools/chrome-devtools-mcp

Chrome DevTools for coding agents

26,271TypeScript

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#29go-kratos/kratos

Your ultimate Go microservices framework for the cloud-native era.

25,462Go

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#30assafelovic/gpt-researcher

An autonomous agent that conducts deep research on any data using any LLM providers.

25,371Python

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#31flipped-aurora/gin-vue-admin

🚀Vite+Vue3+Gin拥有AI辅助的基础开发平台，企业级业务AI+开发解决方案，内置mcp辅助服务，内置skills管理，支持TS和JS混用。它集成了JWT鉴权、权限管理、动态路由、显隐可控组件、分页封装、多点登录拦截、资源权限、上传下载、代码生成器、表单生成器和可配置的导入导出等开发必备功能。

24,323Go

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#3278/xiaozhi-esp32

An MCP-based chatbot | 一个基于MCP的聊天机器人

24,112C++

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#33PrefectHQ/fastmcp

🚀 The fast, Pythonic way to build MCP servers and clients.

23,038Python

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#34yamadashy/repomix

📦 Repomix is a powerful tool that packs your entire repository into a single, AI-friendly file. Perfect for when you need to feed your codebase to Large Language Models (LLMs) or other AI tools like Claude, ChatGPT, DeepSeek, Perplexity, Gemini, Gemma, Llama, Grok, and more.

21,983TypeScript

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#35mastra-ai/mastra

From the team behind Gatsby, Mastra is a framework for building AI-powered applications and agents with a modern TypeScript stack.

21,267TypeScript

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#36activepieces/activepieces

AI Agents & MCPs & AI Workflow Automation • (~400 MCP servers for AI agents) • AI Automation / AI Agent with MCPs • AI Workflows & AI Agents • MCPs for AI Agents

20,904TypeScript

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#37qax-os/excelize

Go language library for reading and writing Microsoft Excel™ (XLAM / XLSM / XLSX / XLTM / XLTX) spreadsheets

20,302Go

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#38farion1231/cc-switch

A cross-platform desktop All-in-One assistant tool for Claude Code, Codex, OpenCode & Gemini CLI.

19,141TypeScript

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#39microsoft/mcp-for-beginners

This open-source curriculum introduces the fundamentals of Model Context Protocol (MCP) through real-world, cross-language examples in .NET, Java, TypeScript, JavaScript, Rust and Python. Designed for developers, it focuses on practical techniques for building modular, scalable, and secure AI workflows from session setup to service orchestration.

14,439Jupyter Notebook

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#40czlonkowski/n8n-mcp

A MCP for Claude Desktop / Claude Code / Windsurf / Cursor to build n8n workflows for you

13,771TypeScript

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#41triggerdotdev/trigger.dev

Trigger.dev – build and deploy fully‑managed AI agents and workflows

13,760TypeScript

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#42sickn33/antigravity-awesome-skills

The Ultimate Collection of 800+ Agentic Skills for Claude Code/Antigravity/Cursor. Battle-tested, high-performance skills for AI agents including official skills from Anthropic and Vercel.

13,663Python

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