one of the clearest and easiest sites to look at.
note as wide a selection of chord types as the other site.
select root note, chord type, as well as bass note.
Guitar Chord Finder
very simple, extremely useful. choose a root note and wide selection of chords. side bar displays the notes of each chord. however, only shows charts in the first or second position.
Gootar Guitar Chords
has sound--will strum chords or arpeggiate as you scroll with the mouse over diagrams.