Tab software for Mac

Aloha guys !

I was wondering, for those of you who are on Mac, what software do you use for tab-ing ?

I got a tab but I want to simplify it, there are notes wich are complicated to do, but witch can be played another way. (For example A 8th = E 13th)
And it would be much easier to read if I don't have to transcribe it "live".

CouS

BTW the song is Bach Invention n°4 played by Jake HERE
If some of you are interested I will post the tab

This thread may help:

http://www.ukuleleunderground.com/forum/showthread.php?t=11387

May or may not be useful to you, but Garage Band from iLife '09 can generate sheet music from midi instruments. I have seen a sheet from it. They look nice, but I have not played with it.