You could have downloaded Tony 2.0 for Mac from our application library for free. Tony for Mac lies within Audio & Video Tools, more precisely Music Production. This free software for Mac OS X is an intellectual property of Chris Cannam, Gyorgy Fazekas, Justin Salamon, Matthias Mauch, Rachel Bittner.
From the developer:
Tony is a program for interactive note and pitch analysis and annotation. The program automatically analyses the audio to visualize pitch tracks and notes from monophonic recordings. Then you can use several tools that make correction of such errors a breeze, including alternative pitch track selection, octave shift, and easy note split, merge and deletion.
You may want to check out more Mac applications, such as Sushi To Go Express, Freeciv or CrossFTP Server, which might be similar to Tony.