Melodyne Studio 5 - the flagship of Celemony - Contains a Stand alone Multitrack version - which allows you to edit multiple tracks in the same window. Can be very advantageous for large choir events or similar.
The package also includes Melodyne Editor - plug-in for all known Daws, which allows you to track, correct, change timing etc. on individual tracks. Furthermore, Melodyne Editor, the patented DNA technology that makes it possible to split e.g. a guitar chord ad, and tune individually to the individual notes! Yes, it is good enough !!