midiChordAnalyzer

The original developer seems to be inactive. Now this plugin can be downloaded from us.

http://miraxlabs.com/open-source/

https://code.google.com/archive/p/pizmidi/downloads

This plugin isn't there.

Available here

https://www.dropbox.com/s/ln0qj1u06ewfdd8/Midi-Chord-Analyzer64.zip?dl=1

https://www.dropbox.com/s/ln0qj1u06ewfdd8/Midi-Chord-Analyzer64.zip?dl=1

and https://github.com/jpauwels/pizmidi

man this is sketchy. the most current downloadable version from these links here are from 2012.

There is also https://sourceforge.net/projects/ackord/

you can add any chords in the chords.txt.

or one for Reaper.

https://forum.cockos.com/showthread.php?p=2384881#post2384881