STANDALONE
DTMF
Creates Dual-tone multi-frequency Sounds like a telephone.
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PATCH SHEET EDITOR TOOL 
Edit and save MIDI CC Assignments and Knob Labels.
Unofficial Tool for KORG ms20 Legacy Collection.
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MIDI CHANNEL PATCH MATRIX
Route Incoming MIDI Channels to outgoing MIDI Channels.
MIDI SPION
MIDI Spion displays incoming MIDI Messages.
16 Channels, each with:
Note Number, Note Frequency, Note Velocity,
ControlChange Value, Control Change Number,
PitchBend, Aftertouch, Status