Open Source MCP Servers
Discover 53 open source MCP Server repositories from GitHub, each with an analysis of what it does, key features, use cases and alternatives. MCP Server projects here are most often combined with MCP, AI Agents and Developer Tools. Last updated October 4, 2026.
53 repositories · updated October 4, 2026
xiaozhi-esp32-server: Run a Backend for ESP32 Voice Devices
A self-hosted backend for xiaozhi-esp32 devices, providing voice interaction, AI model integrations, device control, and an administration console. It suits ESP32 owners who want to deploy and configure their own service.
magic-mcp: Connect Coding Agents to 21st UI Tools
A compatibility proxy that connects coding agents to the 21st MCP service for React and Tailwind UI discovery and generation. It suits developers who want to search components or access hosted UI tools from their editor, with a fresh 21st API key.
hexstrike-ai: Connect AI Agents to Security Testing Tools
HexStrike AI is an MCP server that connects compatible AI agents to cybersecurity tools for authorized penetration testing, vulnerability discovery, and security research. It combines tool execution with specialized agents and workflow support.
tolgee-platform: Manage Software Localization and Translations
Tolgee is a web-based localization platform for developers and translation teams. It brings in-context editing, translation workflows, SDK integrations, and machine-assisted suggestions together for projects that need to manage translations across languages.
magictunnel: Find and Run MCP Tools from Natural Language
MagicTunnel is a Rust-based MCP proxy that presents a single smart tool for discovering and invoking other tools from natural-language requests. It also includes a management dashboard, service supervisor, and tools for generating capabilities from API definitions.