MidiTransposer is described as 'Simple, VST plugin to help you transpose your keyboard in real-time, simply pressing a button and a key' and is an app in the audio & music category. There are three alternatives to MidiTransposer for Windows and Mac. The best MidiTransposer alternative is MidiKeySwitcher. It's not free, so if you're looking for a free alternative, you could try MIDI Transform.
MidiKeySwitcher is a Midi Plugin that lets you configure 2-key switches to select an output Midi Channel, Octave Shifts and send Midi Messages to select Programs and Banks and SubBanks from a Midi keyboard set to a fixed channel.
MIDI Transform helps you do simple, non-realtime MIDI transforms like volume and velocity changes, transposing of notes and mode changes.
AutoTonic is an advanced, real-time MIDI note transposer with up to 24,576 scales to give you the full power of music theory.
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