A very useful program to update mods when new builds are released.

[rakkaus]

This program helps me a lot when a new build comes and you don't know what is new, what is moved, etc. This is a very customizable program that helps a lot when checking out for differences. It is called WinMerge and it's free. It even supports XML syntax. I am linking the screenshots of my settings below, as they make a huge difference with the exposure/interpretation of the contents when working with XML mods.

http://winmerge.org/

https://www.mediafire.com/folder/cfo41b5watcuc/WinMerge_Settings

[Rikiki]

Yep. You can also use the NotePad++ "Compare" plugin.