The chord/scale identification AU allows you to play a collection of notes and instantly see what chord or scale they could be
You can also click on any chord to view more information
The chord pad AU is a powerful composition and performance tool
Each chord pad is a MIDI trigger. You can select any chord from Tonality's database and edit its voicing (down to the octave and velocity of each note). Pads are also MIDI trigger assignable (you can make them sound when a certain MIDI note on message is received).