ChordExpert

From notes to chords – ChordExpert is the chord recognition tool. Play using the on-screen keyboard or a MIDI controller and instantly see name of the currently played chord. Use it to make sure you're playing the chords correctly or to find names of more uncommon chords. Alongside the chord symbol, notes are shown on a grand staff and highlighted on the on-screen keyboard, so you have multiple sources of feedback on what is being currently played.