Back in May 2007, I took a look at Kompare, a graphical utility for KDE which allows you to compare two files side-by-side, a bit like a graphical version of the diff tool.
A similar application for GNOME is Meld.
As you can see if you compare it with Kompare, the interface is quite similar. Any additions made to the original are highlighted in a green block. Deletions and differences ...
