MIDIBridge

Stream MIDI signals to any device over the Internet in real time

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Overview

MIDIBridge is a lightweight, open-source toolset that streams MIDI signals to any machine over the Internet in real time.

No extra hardware. No distance limit. Just plug in and play.

MIDI Keyboard ──USB──▶ Server ──WebSocket──▶ Client ──Virtual MIDI──▶ DAW / Other Software

Repositories

Component	Repo	Description
Server	midibridge-server	Reads USB MIDI input and broadcasts over WebSocket
Client	midibridge-client	Receives signals and injects them into a virtual MIDI port for use by DAWs
Android	midibridge-android	Run MIDIBridge Server on your Android device

Features

Feature	Description
🔌 Zero-config pairing	Set password once — client auto-connects
👥 Multi-client	One server broadcasts to multiple clients simultaneously
🔄 Hot-plug recovery	Unplug and replug the keyboard anytime — server auto-detects
🎯 Device targeting	Configure target MIDI device name — auto-retries until ready
🔒 Password-protected	bcrypt-hashed storage with remote online update
♻️ Auto-reconnect	Exponential backoff with random jitter to avoid connection storms
🔗 External integration	Local programs can read the live MIDI stream directly over TCP — no virtual MIDI port required

Quick Start

Server

Download the binary for your platform from MIDIBridge-Server Releases

Change the default password via the HTTP API after first launch.
See the server repository README.md for detailed instructions.

Android

Run MIDIBridge Server on your Android device

Download the APK from MIDIBridge-Android Releases and install it on your phone.

See MIDIBridge-Android README for details.

Client

Download the binary for your platform from MIDIBridge-Client Releases:

./midibridge-client

Edit data/config.json with your server IP and password before starting.

Important

Windows users: Due to driver limitations, install loopMIDI first and create a virtual port with the same name as virtualPortName in your config file — otherwise the client cannot inject MIDI signals.

External integration (optional)

Besides injecting into a virtual MIDI port, the client can also publish the same MIDI stream over a local TCP loopback socket, so other programs on the same machine can read it directly

./midibridge-client -ipc-listen 127.0.0.1:9003

This is off by default and does not change the normal virtual-MIDI-port workflow. The interface is read-only and unauthenticated, so it is intended for programs running on the same machine.

See docs/PROTOCOL.md in the client repository for the protocol specification and copy-paste-ready examples.

License

MIT — Use, modify, and distribute freely.