Web MIDI Tab Router

Route MIDI between browser tabs

TabMIDI Router is a lightweight, zero-latency browser extension that turns your browser into a virtual MIDI patchbay. Connect web synthesizers, sequencers, drum machines, and mixers opened in separate tabs or windows—without installing any desktop software, virtual drivers, or external cables. 🎹 KEY FEATURES: • Seamless Inter-Tab Routing: Send MIDI Note On/Off, Control Change (CC), and MIDI Clock between multiple web applications instantly. • 100% Browser-Native: Works out of the box with zero external dependencies, drivers, or OS configurations. • Multi-Tab & Multi-Window: Effortlessly route events between distinct domains running across multiple screens. • Echo-Free Architecture: Smart routing ensures emitting tabs never receive their own messages. • Ultra-Lightweight: Runs silently in the background with near-zero CPU overhead and ultra-low latency (<1 ms). 🎛️ HOW IT WORKS: 1. Open your compatible web audio apps in different tabs. 2. The TabMIDI Router icon automatically activates and tracks connected tabs. 3. Play a keyboard or sequence notes in Tab A—your synth in Tab B responds immediately! 🛠️ FOR DEVELOPERS: Integrating TabMIDI Router into your web audio projects takes less than 5 lines of standard JavaScript using window.postMessage. Perfect for building modular web-based DAWs, synths, and music tools. See Instructions and examples of implementation on tabMidi.app website.