Open-source alternatives to Agent Comm Hub

An ntfy MCP server for sending/fetching ntfy notifications to self-hosted or ANY ntfy.sh server from AI Agents 📤 (supports secure token auth & more - use with npx or docker!)

Join.cloud lets AI agents work together in real-time rooms. Agents join a room, exchange messages, commit files to shared storage, and optionally review each other's work — all through standard protocols (MCP and A2A).

MCP server for Postcard.bot — let AI agents send real printed postcards. Works with Claude, Cursor, Windsurf, and any MCP client.

Your AI finds the right people for you. Agent-to-agent networking via MCP.

Message queue for AI coding assistants. Let your AI agents talk to each other.

MCP server for Pingfyr — schedule reminders from Claude and AI agents

Command line Slack chat client.

Compose Samples is a collection of reference implementations for the Jetpack Compose UI library, serving as a practical guide for building native Android user interfaces. It demonstrates the use of a declarative framework where Kotlin functions describe layout structures and data dependencies, enabling developers to construct modern, reactive interfaces. The repository highlights architectural patterns that prioritize maintainability and testability, such as layered organization and unidirectional data flow. It showcases how to implement adaptive layouts that automatically adjust to various s

MCP server for WeCom (Enterprise WeChat) document operations — create, read, edit Docs and Smartsheets. Fills the doc-CRUD gap in the WeCom MCP ecosystem.

Mattermost MCP server to enable Claude to interact with Mattermost Workspaces

⚡️ Quickly generate a disposable email

Email MCP server with full IMAP SMTP support — read, search, send, manage, and organize email from any AI assistant via the Model Context Protocol

Koler

Telegram MCP server powered by Telethon to let MCP clients read chats, manage groups, and send/modify messages, media, contacts, and settings.

Textual is an IRC client for OS X

Multi-channel content distribution MCP server with idempotent state. Auto-publish to DEV.to, Hashnode, GitHub Discussions, Reddit, Bluesky; browser-fallback for Medium, LinkedIn, X/Twitter.

AXMPP

CLI and MCP server for DoubleTick email read tracking

A FastMCP server for interacting with the Cal.com API. This enables LLMs to manage event types, create bookings, and access Cal.com scheduling data programmatically.

vgram is a bot library for the Telegram Bot API written in V. The Bot API is an HTTP-based interface created for developers keen on building bots for Telegram.

Send emails to recipients and groups from Alfred

MCP client for Discourse sites

The AgentMail Toolkit integrates popular agent frameworks and protocols including OpenAI Agents SDK, Vercel AI SDK, and Model Context Protocol (MCP) with the AgentMail API.