Chord Reporter

Chord Reporter (hereafter abbreviated to CR) is a software program that displays the names of chords, as you play them (upon some MIDI controller or from a MIDI sequencer track).

CR comes in two versions. There is an LV2 plugin that will run on any Linux program that loads such plugins. In that way, you can anaylze the chord progressions in your DAW's MIDI tracks. The second version is a Linux executable that runs on its own. You can directly attach your MIDI controller to this version to review the chords you're playing (as you play them).

A suitable MIDI controller would be either a MIDI keyboard, a guitar equipped with a MIDI pickup such as the Fishman triple play, or even an electric guitar pickup plugged into a computer audio interface running pitch-to-MIDI software.