FileWizrd supports multiple languages.
You can easily change the language with a few steps.
WebClient: Login to the webclient, and click on the "cog" icon in the top-right corner. In the pop-up menu, click on the first option to change the language.
Windows and Mac: The language can be changed in the settings tab of the desktop application. (The same location as the login option).
iPhone, Android phones, and tablets: The application uses the language you have set on your device.