Best Open Source mcp tools Libraries

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

#1PrefectHQ/fastmcp

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

23,038Python

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#2activepieces/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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#3mcp-use/mcp-use

The fullstack MCP framework to develop MCP Apps for ChatGPT / Claude & MCP Servers for AI Agents.

9,227TypeScript

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