Hi Fabein,
Thank you for your interest in Essential Tools.
You can localize the form and controls by following the steps demonstrated in our UG at following location:
http://help.syncfusion.com/UG/User%20Interface/Windows%20Forms/Tools/default.htmPlease navigate to Localization of Tools category:
You can also find a sample at following location after installation of Essential Tools:
{Install drive}:\Syncfusion\{version}\Windows\Tools.Windows\Samples\2.0\Localization Demo\Localization Demo
Please let me know if you have any question.
Regards,
Dhivya.