AP Tuner

AP
Tuner takes a classic musician's instrument tuner and puts it on the
computer, while adding a few extra, useful features. It offers a "note
preset" function that allows musicians to tune to the standard notes
used by their instruments, as well as customizable temperaments. It has
a harmonic graph feature that shows the nearby harmonics of the note
being played, aiding in more precise tuning adjustments. The interface
is smart and straightforward, with menus and settings logically
organized and easy to find. Our main objection was that it works only
in standalone mode, without an option to be used as a DirectX or VST
plug-in inside one of the most popular audio-editing programs.

Download: [Windows 98/Me/2000/XP]

http://www.aptuner.com/cgi-bin/aptuner/ftp/apmain/APTunerInstall308.exe