Is there a tool to show differences between two Maple versions?

When Nexon releases a new patch for Maplestory, Southperry shows differences between two versions. For example, newly added skills, npcs, items and so on.

Mostly, Fiel writes them. (Thank you, Fiel)

I wonder there is a special tool, which means a software, to show differences easily.

Please help me.

2 things that come to mind when you say this.

1) an extractor since you even mention'd Fiel does it.
2) a repacker which I don't think i'm allowed to link on this site.