Hi,
yes, we provide analysis only in English, however it can be easily used with machine translated API. We tested it with output translated by Google Translate API or Microsoft Translator API and the results was almost as good as in English. If you would like you can provide us a test dataset (e.g. 100 texts) in French and we can translate it and test it for accuracy. We do not provide yet a service integrated with translation API, our customers do it by themselves.
Best,
Tom