Name: Open-source tools for the Model Context Protocol ecosystem
Creator: The Webhound Team
Published: 2026-05-05T13:00:20.268976+00:00
Keywords: A practical inventory of open-source tools developers can use to build on the MCP ecosystem.

Open-source tools for the Model Context Protocol ecosystem$3 spent

$2.50 spent

project_name	category	language	github_url	license	maintainer	mcp_role
Apify MCP Tester	Client	TypeScript	https://github.com/apify/actor-mcp-tester	Apache-2.0	Apify	A standalone testing client and Apify Actor designed to connect to and test any MCP server using SSE transport.
MCP Ruby SDK	SDK	Ruby	https://github.com/modelcontextprotocol/ruby-sdk	MIT	modelcontextprotocol	Official Ruby implementation for MCP, enabling Ruby applications to function as MCP servers or clients.
MCP Inspector	Inspector	TypeScript	https://github.com/modelcontextprotocol/inspector	MIT	modelcontextprotocol	A browser-based tool for visually inspecting and testing MCP servers, tools, and resources during development.
MCP Registry	Registry	Go	https://github.com/modelcontextprotocol/registry	MIT	modelcontextprotocol	A central registry for discovering and sharing MCP servers across the community.
MCP Reference Servers	Server Framework	TypeScript	https://github.com/modelcontextprotocol/servers	MIT	modelcontextprotocol	A collection of reference and maintained MCP server implementations for various data sources like GitHub, Slack, and Google Drive.
MCP Apps SDK	SDK	TypeScript	https://github.com/modelcontextprotocol/ext-apps	MIT	modelcontextprotocol	Provides the specification and SDK for the MCP Apps protocol, enabling embedded UIs within AI chat interfaces.
MCP Desktop Installer (MCPB)	Tooling	TypeScript	https://github.com/modelcontextprotocol/mcpb	MIT	modelcontextprotocol	A tool for managing and installing MCP servers locally with one click for desktop AI applications.
MCP Java SDK	SDK	Java	https://github.com/modelcontextprotocol/java-sdk	MIT	modelcontextprotocol	Official Java implementation for MCP, integrated with Spring AI for building enterprise-grade MCP servers and clients.
MCP Rust SDK	SDK	Rust	https://github.com/modelcontextprotocol/rust-sdk	MIT	modelcontextprotocol	Official Rust implementation for MCP, providing type-safe bindings for building servers and clients.
MCP Kotlin SDK	SDK	Kotlin	https://github.com/modelcontextprotocol/kotlin-sdk	MIT	modelcontextprotocol	Official Kotlin implementation for MCP, developed with JetBrains for seamless use in JVM and Android environments.
MCP Swift SDK	SDK	Swift	https://github.com/modelcontextprotocol/swift-sdk	MIT	modelcontextprotocol	Official Swift implementation for MCP, enabling AI tool integration for Apple platforms.
MCP Go SDK	SDK	Go	https://github.com/modelcontextprotocol/go-sdk	MIT	modelcontextprotocol	Official Go implementation for MCP, designed for building high-performance servers and integration with Google's ecosystem.
MCP C# SDK	SDK	C#	https://github.com/modelcontextprotocol/csharp-sdk	MIT	modelcontextprotocol	Official .NET implementation for MCP, enabling integration with C# applications and Microsoft's AI tools.
MCP Python SDK	SDK	Python	https://github.com/modelcontextprotocol/python-sdk	MIT	modelcontextprotocol	Official Python implementation for building MCP servers and clients, supporting both sync and async workflows.
MCP TypeScript SDK	SDK	TypeScript	https://github.com/modelcontextprotocol/typescript-sdk	MIT	modelcontextprotocol	Official TypeScript implementation providing base classes and transport layers for building MCP servers and clients.
Honey MCP Server	Server Framework	Go	https://github.com/Shareed2k/honey	MIT	Shareed2k	Provides unified cloud infrastructure discovery tools, enabling agents to search for resources across multiple cloud providers.
Supericons MCP Server	Server Framework	TypeScript	https://github.com/curlymolelabs/supericons	MIT	curlymolelabs	A tool for AI developers and agents to find and insert relevant SVG icons into web projects using semantic search.
Search MCP Server (Official)	Registry	Python	https://github.com/modelcontextprotocol/search-mcp-server	MIT	modelcontextprotocol	An official tool for searching and identifying existing MCP servers within the ecosystem, functioning as a discovery registry.
DuckDuckGo MCP Server (joshuar)	Server Framework	Python	https://github.com/joshuar/duckduckgo-mcp-server	MIT	joshuar	Enables AI assistants to search the web and fetch full-page content without an API key using the DuckDuckGo engine.
US Business Data MCP Server	Server Framework	TypeScript	https://github.com/avabuildsdata/mcp-us-business-data	MIT	avabuildsdata	Enables AI assistants to retrieve legal and operational data for US businesses, including state filings and permits.
Apify MCP Server	Server Framework	TypeScript	https://github.com/apify/mcp-server	Apache-2.0	Apify	Provides a bridge to the Apify platform, allowing AI agents to run web scrapers and extract data from websites as MCP tools.
Kubernetes MCP Server	Server Framework	Go	https://github.com/containers/kubernetes-mcp-server	Apache-2.0	containers	Enables AI assistants to manage and query Kubernetes and OpenShift clusters via MCP tools and resources.
ArXiv MCP Server	Server Framework	TypeScript	https://github.com/cyanheads/arxiv-mcp-server	MIT	cyanheads	Connects LLMs to the arXiv research repository, allowing users to search, summarize, and retrieve academic papers.
GitLab MCP Server	Server Framework	TypeScript	https://github.com/zereight/gitlab-mcp	MIT	zereight	Provides tools for interacting with GitLab instances, supporting project management and CI/CD workflows for AI agents.
HAPI MCP Gateway	Gateway	TypeScript	https://github.com/com-mcp/hapi-mcp	MIT	com-mcp	Acts as a gateway that transforms standard OpenAPI specifications into MCP tool definitions for dynamic tool discovery.
Exa MCP Server	Infrastructure	TypeScript	https://github.com/exa-labs/exa-mcp-server	MIT	exa-labs	Provides AI-native search and crawling capabilities via MCP, designed for better context retrieval in LLM applications.
GitHub MCP Server	Server Framework	TypeScript	https://github.com/github/github-mcp-server	MIT	GitHub	Official GitHub implementation of an MCP server for repository access, search, and issue management.
mcp-use Framework	Server Framework	TypeScript	https://github.com/mcp-use/mcp-use	MIT	mcp-use	An opinionated development framework for building MCP servers with advanced features like UI widgets and better developer experience.
Awesome MCP Servers (patriksimek)	Registry	Markdown	https://github.com/patriksimek/awesome-mcp-servers-2	CC0-1.0	patriksimek	A community-maintained directory of MCP servers and resources, serving as a registry for discovery.
Awesome MCP DevTools	Registry	Markdown	https://github.com/punkpeye/awesome-mcp-devtools	CC0-1.0	punkpeye	A directory focused on tools, SDKs, and infrastructure for the MCP ecosystem.
Web Search MCP Server (sam2332)	Server Framework	TypeScript	https://github.com/sam2332/mcp-web-search	MIT	sam2332	Provides privacy-focused web search capabilities to AI agents using the DuckDuckGo engine.
Obsidian MCP Server	Server Framework	TypeScript	https://github.com/cyanheads/obsidian-mcp-server	MIT	cyanheads	Allows AI assistants to access and modify personal knowledge bases in Obsidian via the Local REST API.
PyPI Query MCP Server	Server Framework	Python	https://github.com/zandatomas/pypi-query-mcp-server	MIT	zandatomas	Exposes the Python Package Index (PyPI) to AI agents, enabling them to search for libraries and check dependency information.
Inference.sh MCP Server	Infrastructure	TypeScript	https://github.com/inference-sh/mcp-server	MIT	inference.sh	Infrastructure that allows AI agents to discover and run complex multi-modal AI applications through a unified MCP interface.
OpenMCP Client (VS Code)	Client	TypeScript	https://github.com/LSTM-Kirigaya/openmcp-client/	MIT	LSTM-Kirigaya	A VS Code extension that functions as both an MCP client and inspector for testing tools, prompts, and resources.
Rowboat	Client	TypeScript	https://github.com/rowboatlabs/rowboat	MIT	rowboatlabs	An open-source AI assistant framework that integrates MCP to allow models to access local files and external tools.
MCP Auth Extensions	Infrastructure	TypeScript	https://github.com/modelcontextprotocol/ext-auth	MIT	modelcontextprotocol	Provides a standard set of authorization mechanisms and extensions for securing MCP server and client communication.
MCP Quickstart Resources	Tooling	Python	https://github.com/modelcontextprotocol/quickstart-resources	MIT	modelcontextprotocol	Contains official starter code and reference examples for building both MCP servers and clients.
CodeCompanion.nvim	Client	Lua	https://github.com/olimorris/codecompanion.nvim	MIT	olimorris	An AI coding assistant for Neovim that supports MCP servers to provide enhanced context and tool capabilities to the user.
MCPHub.nvim	Client	Lua	https://github.com/ravitemer/mcphub.nvim	MIT	ravitemer	A Neovim plugin that acts as an MCP client, allowing users to interact with servers and tools directly within the editor.
FastMCP (Prefect)	Server Framework	Python	https://github.com/prefecthq/fastmcp	Apache-2.0	PrefectHQ	A popular Pythonic framework for rapid MCP server development, providing decorators and automated schema generation.
MCP PHP SDK	SDK	PHP	https://github.com/modelcontextprotocol/php-sdk	MIT	modelcontextprotocol	Official PHP implementation for building MCP servers and clients, developed with the PHP Foundation.

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