Open source and self-hosted

Photon builds Spectrum, an open-source framework and hosted service that puts AI agents on iMessage, WhatsApp, Telegram and more through one API.

Open-source notification infrastructure whose Novu Connect puts AI agents on Slack, Teams, WhatsApp, Telegram, email, web chat and iMessage through Sendblue.

simhook turns an Android phone into an SMS API with signed webhooks, a TypeScript SDK and an MCP server, hosted at simhook.dev or self-hosted under AGPL-3.0.

Open-source Python packages for macOS: a read-only MCP server for Messages history, an add-on send tool, and a CLI that tunnels the server through a hosted broker.

Open-source npm package that lets AI agents on a Mac read, search, export and send iMessage and SMS through Messages.app, wait for replies and transcribe voice notes.

Open-source MCP server that lets ChatGPT and Claude read, search and send iMessage and SMS from your Mac, locally over stdio or remotely through a self-hosted OAuth gateway.

Open-source MCP connector with a hosted relay and a local Mac agent that lets ChatGPT search iMessage history and Contacts and send confirmed messages from your own Mac.

Open-source, macOS-only MCP server for Claude Code that reads and searches Messages history, transcribes voice notes, exports chats to Obsidian and sends texts after a confirm step.

textbee is an MIT-licensed SMS gateway that turns Android phones into an SMS API with REST, signed webhooks and an MCP server, self-hosted or on its hosted plans.

httpSMS is an open-source Android app and server that lets you send and receive SMS through your own phone with an HTTP API and webhooks, hosted or self-hosted.

Bridge is an open-source SMS and phone verification API that sends through Android phones you own, with signed webhooks, an MCP server and optional SMS provider fallback.

SMS Gateway for Android (SMSGate) is a free Apache-2.0 app that exposes an API and webhooks for SMS and MMS on the phone, through a local, public cloud or self-hosted server.

Open-source MCP server for macOS that lets agents in Claude Code, Codex or Claude Desktop read and search Messages, view photos and send texts or tapbacks behind a confirm flag.

imsg is a free Swift command-line tool that reads the Messages database on a Mac and sends iMessage and SMS through Messages.app, with JSON-RPC for AI agents.

iMessage Relay is an MIT-licensed macOS menu bar app that turns a Mac into an iMessage gateway with webhook events, a REST API and an MCP server, reachable through a Cloudflare Tunnel.

imbridge is an Apache-2.0 Python library, CLI and MCP server that lets AI agents send, reply, react and receive iMessages through Messages on a Mac, with a send allowlist.

Open-source MCP server, part of the Apple MCPs suite, that lets an AI client on your Mac read Messages history and send iMessage, SMS or RCS through Messages.app.

AgentLine is an MIT-licensed AI phone API that gives agents US and Canada numbers for voice calls and SMS, with a hosted voice agent, REST, MCP and a Python SDK.

Open-source MCP server written in Swift that lets AI agents read, search and send your iMessages on macOS, with contact name resolution and resized image attachments.

iBlueText sends iMessage with SMS fallback, plus WhatsApp, from hosted lines or your own Macs, with an iPhone lookup API and an MCP server. It is aimed at marketing and sales teams.

Open-source Python MCP server that lets Claude, Codex, Cursor and other local AI clients read, search and send iMessages through the Messages app on your Mac.

imsg is an MIT-licensed Rust CLI and Linux desktop app that reads and sends messages through an iPhone paired over Bluetooth MAP, with no Mac or Apple ID login.

Hail gives apps and AI agents phone numbers for AI voice calls and SMS, plus an email inbox, through one REST API, CLI and MCP server. Hosted or self-hosted under AGPL-3.0.

adit is an MIT-licensed Windows daemon that reads and sends texts from a paired iPhone over Bluetooth, with a local REST API, WebSocket stream and MCP server.

Open-source Matrix puppeting bridge that relays the SMS, MMS and RCS chats of a phone running Google Messages into Matrix rooms, for teams that self-host Matrix.

imessage-rs is an MIT-licensed Rust toolkit and server for macOS that exposes a BlueBubbles-compatible REST API and webhooks for iMessage, FaceTime and Find My.

AgenticMail is open-source software that gives AI agents their own email inboxes, plus SMS and phone calls through carriers you connect, with an MCP server and REST API.

Chatbubbles is a small Go server for macOS that wraps imsg in an authenticated HTTPS API for chats, sending, attachments, events and webhooks, reachable over Tailscale.

Open-source MCP server that runs Beeper Desktop headless in Docker so an AI agent can read and send on WhatsApp, Signal, Telegram, Slack and other networks.

rustpush is a source-available Rust library from the OpenBubbles project that registers as an Apple device and sends and receives iMessage and FaceTime without a Mac running.

Open-source Matrix puppeting bridge that relays iMessage chats from a Mac signed in to your Apple ID into Matrix rooms. Feature work has slowed since 2024.

Free, local-first inbox for Google Messages (SMS and RCS), WhatsApp and Signal on Mac and web, with a built-in MCP server for AI assistants.

Open-source Python and TypeScript SDK that gives an AI agent one handler for Slack, Discord, Telegram, email, SMS and more, with self-hosted iMessage through a Mac relay.

BlueBubbles is a free, open-source server and app set that brings iMessage to Android, Windows, Linux and the web, with a REST API and webhooks.