I didn't find a way to have an answer, send the translation if it doesn't exist or exchange about it. I do not know if the translation from English to French of XAMPP-control is already existing. I translated the English po file found in local (.\Xampp\locale\en\LC_MESSAGES\xampp_control.po) with poedit in French. Who I've to contact about this kind of translation and its integration. Language support in xampp-control.exe is only available for English and German. How to integrate French language (for example) ?
translate.apachefirends.org seams to be about all the documentation given with Xampp.
My question was about XAMPP-Control. I saw, after sending my message the thread about xampp-control panel V3... I will send an email to Bitnami. [Edit] done[/Edit] I don't have enough knowledge to compile my "own release" of xampp-control ! I'll give you a feedback.