Skip to content
Agent Search Engine

Open source · self-hostable

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 (61k stars), with chrome-devtools-mcp and github-mcp-server close behind. Rankings shift as projects gain stars and ship commits.

28 open-source records · all mcp servers · more best-of lists · how we rank

context7MCP serverContext7 Platform -- Up-to-date code documentation for LLMs and AI code editorsTypeScript · 61k stars · MIT · Aug 2026chrome-devtools-mcpAgentChrome DevTools for coding agentsTypeScript · 49k stars · Apache-2.0 · Aug 2026github-mcp-serverMCP serverGitHub's official MCP ServerGo · 32k stars · MIT · Aug 2026serenaSDK / libraryA powerful MCP toolkit for coding, providing semantic retrieval and editing capabilities - the IDE for your agentPython · 28k stars · MIT · Aug 2026fastmcpSDK / libraryThe fast, Pythonic way to build MCP servers and clients.Python · 27k stars · Apache-2.0 · Aug 2026n8n-mcpMCP serverA MCP for Claude Desktop / Claude Code / Windsurf / Cursor to build n8n workflows for youTypeScript · 23k stars · MIT · Aug 2026FunASRSDK / libraryIndustrial-grade speech recognition toolkit: 170x realtime, 50+ languages, speaker diarization, emotion detection, streaming, and OpenAI-compatible API.Python · 20k stars · MIT · Aug 2026xiaohongshu-mcpMCP serverMCP for xiaohongshu.comGo · 15k stars · Aug 2026fastapi_mcpSDK / libraryExpose your FastAPI endpoints as Model Context Protocol (MCP) tools, with Auth!Python · 12k stars · MIT · Nov 2025ida-pro-mcpMCP serverAI-powered reverse engineering assistant that bridges IDA Pro with language models through MCP.Python · 11k stars · MIT · Aug 2026hexstrike-aiMCP serverHexStrike 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, bugPython · 11k stars · MIT · Aug 2026mcp-useSDK / libraryThe fullstack MCP framework to develop MCP Apps for ChatGPT / Claude & MCP Servers for AI Agents.TypeScript · 10k stars · MIT · Aug 2026
Signal inventory open — put your agent in front of people choosing oneReserve a signal slot →
AWS MCP ServersMCP serverOpen source MCP Servers for AWSPython · 9.6k stars · Apache-2.0 · Aug 2026browser-tools-mcpMCP serverMonitor browser logs directly from Cursor and other MCP compatible IDEs.JavaScript · 7.3k stars · MIT · Aug 2026firecrawl-mcp-serverMCP serverOfficial Firecrawl MCP Server - Adds powerful web scraping and search to Cursor, Claude and any other LLM clients.JavaScript · 7.3k stars · MIT · Aug 2026Browser MCPMCP serverBrowser MCP is a Model Context Provider (MCP) server that allows AI applications to control your browserTypeScript · 7.0k stars · Apache-2.0 · Apr 2025XcodeBuildMCPMCP serverA Model Context Protocol (MCP) server and CLI that provides tools for agent use when working on iOS and macOS projects.TypeScript · 6.2k stars · MIT · Aug 2026exa-mcp-serverMCP serverExa MCP for web search and web crawling!TypeScript · 4.9k stars · MIT · Aug 2026deep-researchMCP serverUse any LLMs (Large Language Models) for Deep Research. Support SSE API and MCP server.JavaScript · 4.7k stars · MIT · Jun 2026csharp-sdkSDK / libraryThe official C# SDK for Model Context Protocol servers and clients. Maintained in collaboration with Microsoft.C# · 4.5k stars · Aug 2026mcp-server-chartMCP serverA visualization mcp & skills contains 25+ visual charts using @antvis. Using for chart generation and data analysis.TypeScript · 4.3k stars · MIT · May 2026excel-mcp-serverMCP serverA Model Context Protocol server for Excel file manipulationPython · 4.1k stars · MIT · Apr 2026jadx-ai-mcpMCP serverPlugin for JADX to integrate MCP serverJava · 2.7k stars · Apache-2.0 · Aug 2026mcphub.nvimMCP clientAn 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.Lua · 1.8k stars · MIT · Jan 2026mcp-searxngMCP serverPrivate web search for AI assistants via SearXNG — supports Claude, Cursor, and any MCP clientTypeScript · 1.1k stars · MIT · Aug 2026arcade-mcpMCP serverMCP Server Framework and Tool Development library for building custom capabilities into agents.Python · 1.0k stars · MIT · Aug 2026conciergeSDK / libraryUniversal SDK for building next-gen MCP serversPython · 532 stars · Jun 2026glanceMCP serverAI-powered browser automation MCP server for Claude Code. Navigate, click, screenshot, test — all from your terminal.TypeScript · 152 stars · MIT · Apr 2026

Frequently asked

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.