I saw an ad on the web advertising "free piano chords!", as though someone owned them and was giving them away free on a limited basis.
Obviously, not only all chords are free, but notes are free and rhythm is free and melody is free and...
It's the instruments that play the music that cost -- except for the human voice, of course.
But if anyone is looking for a free LIST of chords, or free PHOTOS of chords, then here's a couple places they can find them:
Diminshed chords
Augmented chords
6th chords