There are many alternatives to Power Tab Editor for Mac if you are looking for a replacement. The best Mac alternative is MuseScore, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to Power Tab Editor and many of them are available for Mac so hopefully you can find a suitable replacement. Other interesting Mac alternatives to Power Tab Editor are TuxGuitar (Free, Open Source), Guitar Pro (Paid), Avid Sibelius (Freemium) and Impro-Visor (Free, Open Source).
Tabular is a brand new tablature editor that lets you read and write music for guitar, bass, drums and much more. It's the best way to learn new songs, write your own songs and run through practice exercises for nearly any kind of stringed instrument or drum kit.
MidiYodi is a cross-platform MIDI Editor for the desktop that allows editing, examination, playback and conversion of MIDI files. MidiYodi provides a rich set of tools to examine and edit the layout, structure and content of a MIDI file.