If you have Google in Dutch, why not Mozilla and KDE with it?
I assume you're asking why Mozilla and KDE are in English?
Explanation is fairly simple, all the software that I use is in English since I think English is the closest we can get to a universally spoken language.
Plus, when I first entered
http://www.google.com I was automatically re-directed to
http://www.google.be and the page displayed in Dutch.
I didn't even notice that right away and never bothered to try and change it afterwards.
85% of the stuff you research on the web is in English and quite frankly when you talk to people using 5-6 different languages almost every day english is your best alternative
unless you wanna learn Swedish, German and Spanish
