The latest version of MIDI Monitor is 1.5 on Mac Informer. It is a perfect match for Editors & Converters in the Audio & Video category.

Fast, Clear, and Reliable MIDI Stream Monitoring for Music Creators

MIDI Monitor is a straightforward tool designed to track incoming and outgoing MIDI streams with precision. Ideal for music production workflows, coding environments, and real-time troubleshooting, it helps you visualize MIDI data in multiple formats with minimal setup. Its clean, lightweight interface keeps everything efficient while still offering powerful features for beginners and pros.

Each time you launch MIDI Monitor, a fresh document opens instantly. The main window keeps everything organized with three sections—Sources, Filters, and a detailed event panel. Expand Sources or Filters with a single click to choose exactly what you want to track. With filter categories covering voice messages, system common, and real-time data, plus deeper subfilters, you can quickly narrow down the stream to what matters. This makes it useful for complex studio routing, MIDI hardware testing, and accurate digital audio workflow analysis.

Events appear in chronological order and display essential details such as time, source, message, channel, and data. You can also limit the number of events shown for easier navigation. MIDI Monitor supports multiple viewing formats—Note, Decimal, and Hexadecimal—allowing flexible analysis for sound designers, developers, and advanced users working across DAWs or open-world anime gacha music modding communities. Although waveform previews aren’t available, the tool remains a go-to solution for open-source productivity, MIDI routing optimization, and professional studio calibration.

• Track incoming and outgoing MIDI streams in real time with precise data displays.
• Monitor multiple MIDI sources at once with customizable sources and filters.
• View events in Note, Decimal, or Hexadecimal format for flexible analysis.
• Organized interface with expandable sections for quick setup and control.
• Open-source, free, and ideal for music production, development, and troubleshooting.

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