# Best open-source mcp servers

> The open-source mcp servers in the index — self-hostable, inspectable, and free to run. Ranked by real maintained adoption (GitHub stars and recent commit activity), never by sponsorship. Open source buys you control, privacy, and no vendor lock-in; the trade-off is that you host and maintain it yourself.

Right now it's led by context7 (60k stars), with chrome-devtools-mcp and github-mcp-server close behind. Rankings shift as projects gain stars and ship commits.

28 open-source records, ranked by maintained GitHub adoption; sponsorship never affects the ranking. Browse on the web: https://agentsearchengine.app/best/open-source-mcp-servers

## Ranked

1. [context7](https://agentsearchengine.app/agents/context7) — Context7 Platform -- Up-to-date code documentation for LLMs and AI code editors · Open source · MCP server · 60k★ · TypeScript · MIT · active 1 day ago · best for giving coding agents up-to-date library documentation via mcp
2. [chrome-devtools-mcp](https://agentsearchengine.app/agents/chrome-devtools-mcp) — Chrome DevTools for coding agents · Open source · Agent · 48k★ · TypeScript · Apache-2.0 · active 1 day ago · best for giving a coding agent live chrome control for debugging and performance traces
3. [github-mcp-server](https://agentsearchengine.app/agents/github-mcp-server) — GitHub's official MCP Server · Open source · MCP server · 32k★ · Go · MIT · active 3 days ago · best for connecting mcp clients like claude code or cursor to github repos, issues, and prs — the official server
4. [serena](https://agentsearchengine.app/agents/serena) — A powerful MCP toolkit for coding, providing semantic retrieval and editing capabilities - the IDE for your agent · Open source · SDK / library · 27k★ · Python · MIT · active today · best for giving a coding agent symbol-level code navigation, refactoring, and debugging via mcp
5. [fastmcp](https://agentsearchengine.app/agents/fastmcp) — The fast, Pythonic way to build MCP servers and clients. · Open source · SDK / library · 27k★ · Python · Apache-2.0 · active 1 day ago · best for building custom mcp servers and clients in python quickly
6. [n8n-mcp](https://agentsearchengine.app/agents/n8n-mcp) — A MCP for Claude Desktop / Claude Code / Windsurf / Cursor to build n8n workflows for you · Open source · MCP server · 22k★ · TypeScript · MIT · active 4 days ago · best for giving an ai assistant deep knowledge of n8n's 2,285 workflow nodes
7. [FunASR](https://agentsearchengine.app/agents/funasr) — Industrial-grade speech recognition toolkit: 170x realtime, 50+ languages, speaker diarization, emotion detection, streaming, and OpenAI-compatible API. · Open source · SDK / library · 20k★ · Python · MIT · active today · best for self-hosted speech recognition with vad, punctuation, and speaker pipelines
8. [xiaohongshu-mcp](https://agentsearchengine.app/agents/xiaohongshu-mcp) — MCP for xiaohongshu.com · Open source · MCP server · 15k★ · Go · active today · best for giving an ai assistant direct access to xiaohongshu content
9. [fastapi_mcp](https://agentsearchengine.app/agents/fastapi-mcp) — Expose your FastAPI endpoints as Model Context Protocol (MCP) tools, with Auth! · Open source · SDK / library · 12k★ · Python · MIT · active 8 months ago · best for exposing an existing fastapi app as mcp tools while keeping its auth
10. [ida-pro-mcp](https://agentsearchengine.app/agents/ida-pro-mcp) — AI-powered reverse engineering assistant that bridges IDA Pro with language models through MCP. · Open source · MCP server · 11k★ · Python · MIT · active 3 days ago
11. [hexstrike-ai](https://agentsearchengine.app/agents/hexstrike-ai) — HexStrike AI MCP Agents is an advanced MCP server that lets AI agents (Claude, GPT, Copilot, etc.) autonomously run 150+ cybersecurity tools for automated pentesting, vulnerability discovery, bug · Open source · MCP server · 11k★ · Python · MIT · active 3 months ago
12. [mcp-use](https://agentsearchengine.app/agents/mcp-use) — The fullstack MCP framework to develop MCP Apps for ChatGPT / Claude & MCP Servers for AI Agents. · Open source · SDK / library · 10k★ · TypeScript · MIT · active 2 days ago
13. [AWS MCP Servers](https://agentsearchengine.app/agents/mcp) — Open source MCP Servers for AWS · Open source · MCP server · 9.5k★ · Python · Apache-2.0 · active today
14. [browser-tools-mcp](https://agentsearchengine.app/agents/browser-tools-mcp) — Monitor browser logs directly from Cursor and other MCP compatible IDEs. · Open source · MCP server · 7.3k★ · JavaScript · MIT · active 4 months ago
15. [firecrawl-mcp-server](https://agentsearchengine.app/agents/firecrawl-mcp-server) — Official Firecrawl MCP Server - Adds powerful web scraping and search to Cursor, Claude and any other LLM clients. · Open source · MCP server · 7.1k★ · JavaScript · MIT · active 1 day ago
16. [Browser MCP](https://agentsearchengine.app/agents/browsermcp-mcp) — Browser MCP is a Model Context Provider (MCP) server that allows AI applications to control your browser · Open source · MCP server · 6.9k★ · TypeScript · Apache-2.0 · active 1 year ago
17. [XcodeBuildMCP](https://agentsearchengine.app/agents/xcodebuildmcp) — A Model Context Protocol (MCP) server and CLI that provides tools for agent use when working on iOS and macOS projects. · Open source · MCP server · 6.2k★ · TypeScript · MIT · active 1 day ago
18. [exa-mcp-server](https://agentsearchengine.app/agents/exa-mcp-server) — Exa MCP for web search and web crawling! · Open source · MCP server · 4.8k★ · TypeScript · MIT · active 2 days ago
19. [deep-research](https://agentsearchengine.app/agents/deep-research) — Use any LLMs (Large Language Models) for Deep Research. Support SSE API and MCP server. · Open source · MCP server · 4.7k★ · JavaScript · MIT · active 1 month ago
20. [csharp-sdk](https://agentsearchengine.app/agents/csharp-sdk) — The official C# SDK for Model Context Protocol servers and clients. Maintained in collaboration with Microsoft. · Open source · SDK / library · 4.4k★ · C# · active 3 days ago
21. [mcp-server-chart](https://agentsearchengine.app/agents/mcp-server-chart) — A visualization mcp & skills contains 25+ visual charts using @antvis. Using for chart generation and data analysis. · Open source · MCP server · 4.3k★ · TypeScript · MIT · active 2 months ago
22. [excel-mcp-server](https://agentsearchengine.app/agents/excel-mcp-server) — A Model Context Protocol server for Excel file manipulation · Open source · MCP server · 4.1k★ · Python · MIT · active 3 months ago
23. [jadx-ai-mcp](https://agentsearchengine.app/agents/jadx-ai-mcp) — Plugin for JADX to integrate MCP server · Open source · MCP server · 2.6k★ · Java · Apache-2.0 · active 2 months ago
24. [mcphub.nvim](https://agentsearchengine.app/agents/mcphub-nvim) — An MCP client for Neovim that seamlessly integrates MCP servers into your editing workflow with an intuitive interface for managing, testing, and using MCP servers with your favorite chat plugins. · Open source · MCP client · 1.8k★ · Lua · MIT · active 6 months ago
25. [mcp-searxng](https://agentsearchengine.app/agents/mcp-searxng) — Private web search for AI assistants via SearXNG — supports Claude, Cursor, and any MCP client · Open source · MCP server · 1.1k★ · TypeScript · MIT · active today
26. [arcade-mcp](https://agentsearchengine.app/agents/arcade-mcp) — MCP Server Framework and Tool Development library for building custom capabilities into agents. · Open source · MCP server · 984★ · Python · MIT · active 3 days ago
27. [concierge](https://agentsearchengine.app/agents/concierge) — Universal SDK for building next-gen MCP servers · Open source · SDK / library · 533★ · Python · active 1 month ago
28. [glance](https://agentsearchengine.app/agents/glance) — AI-powered browser automation MCP server for Claude Code. Navigate, click, screenshot, test — all from your terminal. · Open source · MCP server · 156★ · TypeScript · MIT · active 3 months ago

## FAQ

**What are the best open-source mcp servers?**
The projects listed below, ranked by maintained adoption — GitHub stars plus recent activity — so you see what's genuinely used and still maintained, not abandoned.

**Are open-source mcp servers free?**
The software is free to run and self-host. You still pay for the infrastructure you run it on and any model or API usage it makes.

**Open-source or commercial mcp servers — which should I choose?**
Pick open source for control, privacy, and no lock-in when you're happy to host and maintain it; pick a commercial product for a managed, supported experience. You can compare both in the full mcp servers category.

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Source: [Agent Search Engine](https://agentsearchengine.app) — https://agentsearchengine.app/best/open-source-mcp-servers