Hi!
I'm Giovanni Santostefano.
I've developed Qfold that is a Qt4 reimplementation of fold(1).
With Qfold you can format text in 80 columns or N-columns and converting accents like " è " in " e' " and tabs in 4 spaces.
You can download the program on my website
http://santostefanogiovanni.blogspot.com/
Here is an image
http://img172.imageshack.us/img172/4456/qfoldri2.jpg
Let me know what you think!
Bye
Gio