From SiteCake 1.0.31 version we have multi-language UI. So far we have added Serbian and Slovenian language. SiteCake will wake up in English by default, but if you happen to need any supported language just go to /sitecake/editor.cfg and change the language. Settings are simple:

# interface language (en, sl, sr)
LocaleProxyImpl.interfaceLocale = en

If you need SiteCake in your language and want to volunteer your time to translate the UI, just email us and we will send you text file for translation.